This document summarizes a research paper that investigates using magnetic cores with air gaps to increase the efficiency of Cuk converters. Three magnetic core models are proposed that vary the placement of air gaps. Model 1 has air gaps on all feet, Model 2 has air gaps on the left and right feet, and Model 3 has air gaps on the middle and right feet. Each model is simulated while varying the air gap widths. The results found that Model 3 with an air gap of 0.19mm on the middle foot and 0.254mm on the right foot achieved the highest efficiency of 94% and maximum flux of 0.0098 Wb. Incorporating optimized air gaps in the magnetic core design can improve Cuk converter
Wireless power transfer using multiple-transmitters for high stability for p...IJECEIAES
The aim of this study is to optimize the system in the wireless power supply using multiple transmitters by algebraically analyzing the effects of both a circuit parameter and an axis displacement, etc. In addition to these analyses, the other aim is designing, producing and evaluating wireless charger with high stability for position. In the proposed method, we analyzed the situation in which three transmitters are used as power sources. It is turned out that the optimum arrangement of three transmitters is equilateral triangular from Biot-Savart law and circuit equation. In the experiment, transmitted power is measured when the receiver is moved on the vertical plane in regard to central axis of coils. It is confirmed that 4~4.5mW is transmitted at the face-to-face of transmitters and 2.4mW is transmitted at the center of transmitters.
MODELING AND OPTIMIZATION OF PIEZOELECTRIC ENERGY HARVESTING adeij1
In this paper, the modeling, optimization and simulation results of the piezoelectric energy harvesting using bond graph approach are presented. Firstly, a lightweight equivalent model derived from the bond graph is proposed. It’s a comprehensive model, which is suitable for piezoelectric seismic energy harvester investigation and power optimization. The optimal charge impedance for both the resistive load and complex load are given and analysed. Finally a bond graph approach is proposed to allow optimization of the extracted energy while keeping simplicity and standalone capability. The proposed model does not rely on any inductor and is constructed with a simple switch. The power harvested is more than twice the conventional technique one on a wide band of resistive load. The bond graph model is valid close to the analysed mode centre frequency and delivers results compared to experimental and analytical data. Furthermore, we also show that the harvester can be electrically tuned to match the excitation frequency. This makes it possible to maximize the power output for both linear and non-linear loads.
Stability criterion of periodic oscillations in a (6)Alexander Decker
This document presents a mathematical model for minimizing power losses on electric transmission lines. The model considers ohmic and corona losses. Ohmic loss is from resistance of conductors, while corona loss occurs due to ionization of air around high-voltage conductors. The model forms a nonlinear optimization problem that is minimized using classical techniques. The results show that power losses are minimized when transmission uses very low current, an operating voltage close to the critical disruptive voltage, and large spacing between conductors relative to their diameters. These findings match existing principles of efficient power transmission.
MODELLING, ANALYSIS AND SIMULATION OF THE PIEZOELECTRIC MICRO PUMPadeij1
The piezoelectricity is a reversible phenomenon, which corresponds to the direct piezoelectric effect. So that, the battery loads arrive at the pump, an electronic module must be established in the circuit. A flow pump must be used and its effectiveness must be evaluated according to the desired need. The system is conceived around 24 hour old clock which can be programmed to provide fluid in variable quantity on a regular basis. The piezo-hydraulic pump presented in this work is composed mainly of shareholder piezoelectric with two valves and a diaphragm of the room reinforced by a hard disk. This one is used to improve the performance of the micro-pump in forecast of pump realization. Modeling, analysis and simulation are carried out under SYMBOLS software.
MATHEMATICAL MODEL OF WIND TURBINE IN GRID-OFF SYSTEM Mellah Hacene
Abstract
This paper deals with the construction of a mathematical model of a wind turbine, which is one of the sources in the Grid-Off
system.
Keywords: mathematical model, wind turbine, Grid-Off system, electric generator, wind conditions.
1 Introduction
As one of the power sources of the Grid-Off system is a wind turbine. It is advantageous to work with a
mathematical model for the need of experimental research. In Fig. 1 is a schematic connection of a wind turbine
to a container, which is a Grid-Off system. [1-4]
Method of Moment analysis of a printed Archimedian Spiral antenna Piyush Kashyap
A single arm Archimedean spiral printed on a grounded dielectric substrate is analyzed using the method of moments. Piecewise sinusoidal subdomain basis and test functions are used over curved segments that exactly follow the spiral curvature. Results for the input impedance obtained using the curved segmentation approach on MATLAB are compared with those obtained after simulating the model on FEKO. A comparison with published results shows that the curved segment model requires fewer segments and is therefore significantly more computationally efficient than the linear segmentation model.
This document presents an implementation of space vector modulation (SVM) for a two-level three-phase inverter using a dSPACE DS1104 controller. It describes the principles of SVM, including voltage vector modeling, sector detection, and pulse generation. Hardware experiments were conducted to validate a SVM control algorithm developed in Simulink. Results showed line voltages from the real hardware matched simulation. THD comparisons confirmed SVM provides lower distortion and higher fundamental output than sinusoidal PWM. The dSPACE system allows real-time testing of control algorithms on actual hardware.
Passivity Based Control for PV Applications by Using a Buck Power Converter
The use of power converters for everyday applications is becoming more and more important. Current technological applications simultaneously demand a high level of precision and performance, so DC-DC converters have a very important role in systems requiring energy level conversion and adaptation. As part of the work of this paper, we are interested in an analysis of modeling and control law synthesis approaches to ensure stability and a certain level of performance in the entire operating domain. The objective of our research work is therefore to propose a control law whose synthesis is based on a formalized (modeling & control) approach with a view to obtaining a control law adapted to the operating point. The principles used are based on the control and observation by the theory of passivity for the synthesis of control law of buck power converter for PV Applications.
Wireless power transfer using multiple-transmitters for high stability for p...IJECEIAES
The aim of this study is to optimize the system in the wireless power supply using multiple transmitters by algebraically analyzing the effects of both a circuit parameter and an axis displacement, etc. In addition to these analyses, the other aim is designing, producing and evaluating wireless charger with high stability for position. In the proposed method, we analyzed the situation in which three transmitters are used as power sources. It is turned out that the optimum arrangement of three transmitters is equilateral triangular from Biot-Savart law and circuit equation. In the experiment, transmitted power is measured when the receiver is moved on the vertical plane in regard to central axis of coils. It is confirmed that 4~4.5mW is transmitted at the face-to-face of transmitters and 2.4mW is transmitted at the center of transmitters.
MODELING AND OPTIMIZATION OF PIEZOELECTRIC ENERGY HARVESTING adeij1
In this paper, the modeling, optimization and simulation results of the piezoelectric energy harvesting using bond graph approach are presented. Firstly, a lightweight equivalent model derived from the bond graph is proposed. It’s a comprehensive model, which is suitable for piezoelectric seismic energy harvester investigation and power optimization. The optimal charge impedance for both the resistive load and complex load are given and analysed. Finally a bond graph approach is proposed to allow optimization of the extracted energy while keeping simplicity and standalone capability. The proposed model does not rely on any inductor and is constructed with a simple switch. The power harvested is more than twice the conventional technique one on a wide band of resistive load. The bond graph model is valid close to the analysed mode centre frequency and delivers results compared to experimental and analytical data. Furthermore, we also show that the harvester can be electrically tuned to match the excitation frequency. This makes it possible to maximize the power output for both linear and non-linear loads.
Stability criterion of periodic oscillations in a (6)Alexander Decker
This document presents a mathematical model for minimizing power losses on electric transmission lines. The model considers ohmic and corona losses. Ohmic loss is from resistance of conductors, while corona loss occurs due to ionization of air around high-voltage conductors. The model forms a nonlinear optimization problem that is minimized using classical techniques. The results show that power losses are minimized when transmission uses very low current, an operating voltage close to the critical disruptive voltage, and large spacing between conductors relative to their diameters. These findings match existing principles of efficient power transmission.
MODELLING, ANALYSIS AND SIMULATION OF THE PIEZOELECTRIC MICRO PUMPadeij1
The piezoelectricity is a reversible phenomenon, which corresponds to the direct piezoelectric effect. So that, the battery loads arrive at the pump, an electronic module must be established in the circuit. A flow pump must be used and its effectiveness must be evaluated according to the desired need. The system is conceived around 24 hour old clock which can be programmed to provide fluid in variable quantity on a regular basis. The piezo-hydraulic pump presented in this work is composed mainly of shareholder piezoelectric with two valves and a diaphragm of the room reinforced by a hard disk. This one is used to improve the performance of the micro-pump in forecast of pump realization. Modeling, analysis and simulation are carried out under SYMBOLS software.
MATHEMATICAL MODEL OF WIND TURBINE IN GRID-OFF SYSTEM Mellah Hacene
Abstract
This paper deals with the construction of a mathematical model of a wind turbine, which is one of the sources in the Grid-Off
system.
Keywords: mathematical model, wind turbine, Grid-Off system, electric generator, wind conditions.
1 Introduction
As one of the power sources of the Grid-Off system is a wind turbine. It is advantageous to work with a
mathematical model for the need of experimental research. In Fig. 1 is a schematic connection of a wind turbine
to a container, which is a Grid-Off system. [1-4]
Method of Moment analysis of a printed Archimedian Spiral antenna Piyush Kashyap
A single arm Archimedean spiral printed on a grounded dielectric substrate is analyzed using the method of moments. Piecewise sinusoidal subdomain basis and test functions are used over curved segments that exactly follow the spiral curvature. Results for the input impedance obtained using the curved segmentation approach on MATLAB are compared with those obtained after simulating the model on FEKO. A comparison with published results shows that the curved segment model requires fewer segments and is therefore significantly more computationally efficient than the linear segmentation model.
This document presents an implementation of space vector modulation (SVM) for a two-level three-phase inverter using a dSPACE DS1104 controller. It describes the principles of SVM, including voltage vector modeling, sector detection, and pulse generation. Hardware experiments were conducted to validate a SVM control algorithm developed in Simulink. Results showed line voltages from the real hardware matched simulation. THD comparisons confirmed SVM provides lower distortion and higher fundamental output than sinusoidal PWM. The dSPACE system allows real-time testing of control algorithms on actual hardware.
Passivity Based Control for PV Applications by Using a Buck Power Converter
The use of power converters for everyday applications is becoming more and more important. Current technological applications simultaneously demand a high level of precision and performance, so DC-DC converters have a very important role in systems requiring energy level conversion and adaptation. As part of the work of this paper, we are interested in an analysis of modeling and control law synthesis approaches to ensure stability and a certain level of performance in the entire operating domain. The objective of our research work is therefore to propose a control law whose synthesis is based on a formalized (modeling & control) approach with a view to obtaining a control law adapted to the operating point. The principles used are based on the control and observation by the theory of passivity for the synthesis of control law of buck power converter for PV Applications.
Cascade forward neural network based on resilient backpropagation for simulta...Mellah Hacene
Cascade-Forward Neural Network Based on Resilient Backpropagation for Simultaneous Parameters and State Space Estimations of Brushed DC Machines
Advances in Modelling and Analysis B
Performance evaluation of Magnetic circuit for M.R. Fluid Damper using F.E.MIDES Editor
The primary purpose of this study is to evaluate and
understand the performance of the Magnetic -Rheological
(MR) damper. It is known that its performance depends upon
the magnetic and hydraulic circuit design. These dampers
are generally used to control the vibrations in various
applications. This work deals with design of an MR damper
for which mathematical model is developed. A finite element
model is built to analyze and investigate the performance of
2-D axi-symmetric MR damper. Various configurations of
damper piston with different number of turns and pole lengths
are simulated. Further, the piston ends of the selected
configuration are modified and investigated. The input current
to the coil and the piston velocity are varied to evaluate the
resulting change in magnetic Field Intensity (H) and damping
Force. The simulation results of the various configurations of
damper show that the performance of filleted piston ends is
superior to that of other configurations for the same magnitude
of coil current and piston velocity.
Design and Simulation of Array of Rectangular Micro Cantilevers Piezoelectric...IJERA Editor
This paper presents the design, analysis and simulation of MEMS based array of bimorph rectangular microcantilever piezoelectric energy harvester structure with and without tip mass, to analyze their sensitivity. The microcantilever beams are made up of piezoelectric material and Aluminium as a substrate material. The analytical simulation of design is done by FEM (COMSOL Multiphysics). The simulation results of bimorph cantilever structure, applied force of 0.1 N and obtained end displacement and electric potential developed are given. The analytical model of the cantilever beam will be analyzed and the process of its construction will be discussed. The changes in the sensitivity of a cantilever beam with respect to change in its shape for the same applied force of 0.1N are denoted.
Temperature dependent electrical response of orange dye complex basedIAEME Publication
The document summarizes research on temperature-dependent electrical properties of Orange-Dye complex based Schottky diodes. Schottky diodes were fabricated from Orange-Dye and Vinyl-Ehtynyl-Trimehyl-Piperiodole complex deposited via spin coating. Current-voltage measurements showed the diodes followed the space charge limited current model. Analysis of this data determined how parameters like mobility, trap density, and threshold voltage varied with temperature, improving at higher temperatures. The study provided insight into charge transport within the organic semiconductor complex.
This document describes a fuzzy logic controller (FLC) model for determining the step size of perturbation in the duty cycle of a photovoltaic system to track the maximum power point (MPP). The FLC uses the slope of the power-voltage curve and the perturbation from the previous step as inputs to determine the step size. The FLC model is simulated in MATLAB/Simulink. Simulation results show that the variable step size MPPT technique using FLC extracts maximum power more efficiently under changing environmental conditions compared to fixed step size techniques.
This document summarizes research that analyzed the effect of temperature on the parameters of silicon solar cells. It was found that the open circuit voltage (Voc) of the solar cells decreases linearly as temperature increases from 20°C to 80°C. In contrast, the short circuit current (Isc) was found to increase only slightly with higher temperatures. The maximum efficiency of 18.5% was obtained at 20°C when Voc was 667.3mV and Isc was 37.56mA. Overall, the study demonstrated that higher temperatures negatively impact the Voc, fill factor, and efficiency of silicon solar cells.
The use of ekf to estimate the transient thermal behaviour of induction motor...Mellah Hacene
This document summarizes a journal article that examines using an Extended Kalman Filter (EKF) to estimate the transient thermal behavior of an induction motor drive without sensors. It first reviews common thermal modeling methods for induction motors, including simple, finite element, and electrical equivalent circuit models. It then presents the authors' thermal model of the induction motor in state-space form, incorporating linear relationships between resistance and temperature, power losses, heat transfer, and temperature rise in the stator and rotor. The resulting state equations can be used by the EKF for sensorless estimation of temperatures and resistances.
This document proposes a system for wireless power transfer to electric vehicles using magnetic resonant couplings. It presents experimental results on helical antennas that could be installed on electric vehicles. The experiments show that:
1) Resonant frequencies of the transmitting and receiving antennas change depending on the air gap between them, but maximum efficiency remains high even for large air gaps.
2) Efficiency remains around 95-97% for air gaps up to 200mm and remains high even when coupling coefficients are weak at large air gaps.
3) Efficiency remains constant, around 95-96%, for varying power levels from -15dBm to 100W, showing that efficiency does not depend on power as predicted by equivalent circuit models.
This document proposes a sensorless estimator for speed, armature temperature, and resistance in brushed DC machines using a cascade-forward neural network (CFNN) and quasi-Newton BFGS backpropagation. A thermal model is used to estimate temperature without a thermal sensor. Simulation results show the CFNN estimates match the model outputs, estimating speed with less than 2% error. This approach provides sensorless simultaneous estimation of multiple parameters without some limitations of prior methods like the extended Kalman filter.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
PERFORMANCE OF HYBRID ELECTROMAGNETIC DAMPER FOR VEHICLE SUSPENSIONijiert bestjournal
Suspension systems, in the automotive application context, have been designed to maintain
contact between a vehicle’s tires and the road, and to isolate the frame of the vehicle from road
disturbances. Dampers, or so-called shock absorbers, as the undeniable heart of suspension
systems, reduce the effect of a sudden bump by smoothing out the shock. In most shock
absorbers, the energy is converted into heat via viscous fluid. In hydraulic cylinders, the
hydraulic fluid is heated up. In air cylinders, the hot air is emitted into the atmosphere. There are
several common approaches for shock absorption, including material hysteresis, dry friction,
fluid friction, compression of gas, and eddy currents.
Study of RF-MEMS Capacitive Shunt Switch for Microwave Backhaul Applications IOSRJECE
In this research paper, we have proposed a new type of capacitive shunt RF-MEMS switch. MicroElectro-Mechanical System (MEMS) is a combination of mechanical and electromagnetics properties at micro level unit. This MEMS switch can be used for switching purpose at RF and microwave frequencies, called RFMEMS switch. The RF-MEMS switch has a potential characteristics and superior performances at radio frequency. The MEMS switch has excellent advantages such as zero power consumption, high power handling capacity, high performance, and low inter-modulation distortion. In this proposed design, a new type of capacitive shunt switch is designed and analyzed for RF applications. The switch is designed both in UP and DOWN-states. The proposed switch design consists of substrate, co-planar waveguide (CPW), dielectric material and suspended metallic bridge. The proposed MEMS switch has dimension of 508 µm × 620 µm with a height of 500 µm and implemented on GaAs as a substrate material with relative permittivity of 12.9. The geometry and results of the proposed switch is designed using Ansoft HFSS electromagnetic simulator based on finite element method (FEM). The electrostatic and electromagnetic result showed better performances such as return loss, insertion loss and isolation. The switch has also excellent isolation property of -48 dB at 26 GHz.
Welcome to International Journal of Engineering Research and Development (IJERD)IJERD Editor
call for paper 2012, hard copy of journal, research paper publishing, where to publish research paper,
journal publishing, how to publish research paper, Call For research paper, international journal, publishing a paper, IJERD, journal of science and technology, how to get a research paper published, publishing a paper, publishing of journal, publishing of research paper, reserach and review articles, IJERD Journal, How to publish your research paper, publish research paper, open access engineering journal, Engineering journal, Mathemetics journal, Physics journal, Chemistry journal, Computer Engineering, Computer Science journal, how to submit your paper, peer reviw journal, indexed journal, reserach and review articles, engineering journal, www.ijerd.com, research journals
This document proposes and validates an equivalent circuit model for a wireless power transfer system capable of transferring 220W of power over a 30cm air gap with 95% efficiency. The model represents the transmitter and receiver coils as inductors with low mutual coupling. Analytical expressions for the model are derived and validated using finite element analysis and experimental results. Loss analysis is also performed to investigate skin effect and proximity effect losses at high operating frequencies. A new coil spatial design is proposed to reduce such losses compared to conventional coil designs.
The given paper presents a hybrid electromagnetic suspension designed for high-speed vacuum transport, where the main levitation force is generated by permanent magnets, while the electromagnet controls the air gap. The computer model is designed by means of MATLAB/Simulink software package, which allows us to simulate the dynamic operational modes of the system. The calculated studies are carried out when the vehicle accelerating to 1000 km/h with account of track irregularities. Permanent magnets incorporated in the system of electromagnetic suspension make it possible to reduce the energy consumption needed for levitation force generation.
Stochastic estimation methods for induction motor transient thermal monitorin...Mellah Hacene
The induction machine, because of its robustness and low-cost, is commonly used in the industry. Nevertheless, as every type of electrical machine, this machine suffers of some limitations. The most important one is the working temperature which is the dimensioning parameter for the definition of the nominal working point and the machine lifetime. Due to a strong demand concerning thermal monitoring methods appeared in the industry sector. In this context, the adding of temperature sensors is not acceptable and the studied methods tend to use sensorless approaches such as observators or parameters estimators like the extended Kalman Filter (EKF). Then the important criteria are reliability, computational cost ad real time implementation.
IRJET- Silicon based Molecular ElectronicIRJET Journal
This document presents a theoretical framework for modeling molecular electronics on silicon substrates. It combines a first-principles description of molecules with a semi-empirical treatment of silicon's bulk band structure. The framework is used to demonstrate negative differential resistance in a molecular resonant tunneling diode when molecular levels are driven by an STM tip into silicon's band gap. Specifically, it shows negative differential resistance peaks for styrene molecules on p-doped silicon at positive biases, and potentially for negative biases on n-doped silicon. This molecular resonant tunneling effect could enable new types of logic and memory devices integrating molecules with silicon technology.
Cosine modulated filter bank transmultiplexer using kaiser windowIAEME Publication
This document summarizes a research paper on designing a near perfect reconstruction cosine modulated filter-bank transmultiplexer using Kaiser window functions. It discusses using Kaiser windows with high side-lobe fall off rates to design prototype filters for analysis and synthesis sections. It also compares using an optimization algorithm versus no optimization to reduce inter-symbol interference and inter-carrier interference. The simulation results show the optimization approach provides less error compared to no optimization.
The advancement & effect of six sigma approach in a modernIAEME Publication
This document summarizes research on the advancement and effects of Six Sigma approaches in modern industries. It finds that Six Sigma has been successfully applied in manufacturing industries to improve processes using DMAIC methodology. Some large corporations have integrated Six Sigma so well into their culture that it has become the foundation of the company. The document also examines key factors for successful Six Sigma implementation, such as management commitment, understanding of Six Sigma tools and techniques, linking Six Sigma to business strategy and customers, project selection and tracking, organizational infrastructure, and cultural change. Overall, the research finds that Six Sigma activities can contribute to process management refreshment, quality improvement, and increased corporate competitiveness.
High step up boost converter based micro inverter with mppt and current controlIAEME Publication
This document summarizes a research paper that proposes a high step-up boost converter-based micro inverter system for grid-connected photovoltaic power generation. A high step-up boost converter is used to efficiently transfer maximum power from the solar panel to the grid. An incremental conductance maximum power point tracking algorithm controls the converter to extract maximum power. A single-phase inverter with current control is also implemented for grid synchronization. The proposed system was modeled and simulated in MATLAB/Simulink to validate the design of the high step-up converter and maximum power point tracking approach.
Script identification from printed document images using statisticalIAEME Publication
The document presents a technique for identifying the script of document images as Kannada, Hindi, or English. It segments words from a single line of text and extracts statistics of horizontal and vertical run objects. A linear discriminant function is then used to classify the script. The technique was tested on 300 images and achieved 93% accuracy for Hindi, 90% for English, and 86% for Kannada. It segments words by determining vertical projections and generates bounding boxes around words. The technique aims to automatically identify the script of multi-script documents in India in an efficient manner.
Cascade forward neural network based on resilient backpropagation for simulta...Mellah Hacene
Cascade-Forward Neural Network Based on Resilient Backpropagation for Simultaneous Parameters and State Space Estimations of Brushed DC Machines
Advances in Modelling and Analysis B
Performance evaluation of Magnetic circuit for M.R. Fluid Damper using F.E.MIDES Editor
The primary purpose of this study is to evaluate and
understand the performance of the Magnetic -Rheological
(MR) damper. It is known that its performance depends upon
the magnetic and hydraulic circuit design. These dampers
are generally used to control the vibrations in various
applications. This work deals with design of an MR damper
for which mathematical model is developed. A finite element
model is built to analyze and investigate the performance of
2-D axi-symmetric MR damper. Various configurations of
damper piston with different number of turns and pole lengths
are simulated. Further, the piston ends of the selected
configuration are modified and investigated. The input current
to the coil and the piston velocity are varied to evaluate the
resulting change in magnetic Field Intensity (H) and damping
Force. The simulation results of the various configurations of
damper show that the performance of filleted piston ends is
superior to that of other configurations for the same magnitude
of coil current and piston velocity.
Design and Simulation of Array of Rectangular Micro Cantilevers Piezoelectric...IJERA Editor
This paper presents the design, analysis and simulation of MEMS based array of bimorph rectangular microcantilever piezoelectric energy harvester structure with and without tip mass, to analyze their sensitivity. The microcantilever beams are made up of piezoelectric material and Aluminium as a substrate material. The analytical simulation of design is done by FEM (COMSOL Multiphysics). The simulation results of bimorph cantilever structure, applied force of 0.1 N and obtained end displacement and electric potential developed are given. The analytical model of the cantilever beam will be analyzed and the process of its construction will be discussed. The changes in the sensitivity of a cantilever beam with respect to change in its shape for the same applied force of 0.1N are denoted.
Temperature dependent electrical response of orange dye complex basedIAEME Publication
The document summarizes research on temperature-dependent electrical properties of Orange-Dye complex based Schottky diodes. Schottky diodes were fabricated from Orange-Dye and Vinyl-Ehtynyl-Trimehyl-Piperiodole complex deposited via spin coating. Current-voltage measurements showed the diodes followed the space charge limited current model. Analysis of this data determined how parameters like mobility, trap density, and threshold voltage varied with temperature, improving at higher temperatures. The study provided insight into charge transport within the organic semiconductor complex.
This document describes a fuzzy logic controller (FLC) model for determining the step size of perturbation in the duty cycle of a photovoltaic system to track the maximum power point (MPP). The FLC uses the slope of the power-voltage curve and the perturbation from the previous step as inputs to determine the step size. The FLC model is simulated in MATLAB/Simulink. Simulation results show that the variable step size MPPT technique using FLC extracts maximum power more efficiently under changing environmental conditions compared to fixed step size techniques.
This document summarizes research that analyzed the effect of temperature on the parameters of silicon solar cells. It was found that the open circuit voltage (Voc) of the solar cells decreases linearly as temperature increases from 20°C to 80°C. In contrast, the short circuit current (Isc) was found to increase only slightly with higher temperatures. The maximum efficiency of 18.5% was obtained at 20°C when Voc was 667.3mV and Isc was 37.56mA. Overall, the study demonstrated that higher temperatures negatively impact the Voc, fill factor, and efficiency of silicon solar cells.
The use of ekf to estimate the transient thermal behaviour of induction motor...Mellah Hacene
This document summarizes a journal article that examines using an Extended Kalman Filter (EKF) to estimate the transient thermal behavior of an induction motor drive without sensors. It first reviews common thermal modeling methods for induction motors, including simple, finite element, and electrical equivalent circuit models. It then presents the authors' thermal model of the induction motor in state-space form, incorporating linear relationships between resistance and temperature, power losses, heat transfer, and temperature rise in the stator and rotor. The resulting state equations can be used by the EKF for sensorless estimation of temperatures and resistances.
This document proposes a system for wireless power transfer to electric vehicles using magnetic resonant couplings. It presents experimental results on helical antennas that could be installed on electric vehicles. The experiments show that:
1) Resonant frequencies of the transmitting and receiving antennas change depending on the air gap between them, but maximum efficiency remains high even for large air gaps.
2) Efficiency remains around 95-97% for air gaps up to 200mm and remains high even when coupling coefficients are weak at large air gaps.
3) Efficiency remains constant, around 95-96%, for varying power levels from -15dBm to 100W, showing that efficiency does not depend on power as predicted by equivalent circuit models.
This document proposes a sensorless estimator for speed, armature temperature, and resistance in brushed DC machines using a cascade-forward neural network (CFNN) and quasi-Newton BFGS backpropagation. A thermal model is used to estimate temperature without a thermal sensor. Simulation results show the CFNN estimates match the model outputs, estimating speed with less than 2% error. This approach provides sensorless simultaneous estimation of multiple parameters without some limitations of prior methods like the extended Kalman filter.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
PERFORMANCE OF HYBRID ELECTROMAGNETIC DAMPER FOR VEHICLE SUSPENSIONijiert bestjournal
Suspension systems, in the automotive application context, have been designed to maintain
contact between a vehicle’s tires and the road, and to isolate the frame of the vehicle from road
disturbances. Dampers, or so-called shock absorbers, as the undeniable heart of suspension
systems, reduce the effect of a sudden bump by smoothing out the shock. In most shock
absorbers, the energy is converted into heat via viscous fluid. In hydraulic cylinders, the
hydraulic fluid is heated up. In air cylinders, the hot air is emitted into the atmosphere. There are
several common approaches for shock absorption, including material hysteresis, dry friction,
fluid friction, compression of gas, and eddy currents.
Study of RF-MEMS Capacitive Shunt Switch for Microwave Backhaul Applications IOSRJECE
In this research paper, we have proposed a new type of capacitive shunt RF-MEMS switch. MicroElectro-Mechanical System (MEMS) is a combination of mechanical and electromagnetics properties at micro level unit. This MEMS switch can be used for switching purpose at RF and microwave frequencies, called RFMEMS switch. The RF-MEMS switch has a potential characteristics and superior performances at radio frequency. The MEMS switch has excellent advantages such as zero power consumption, high power handling capacity, high performance, and low inter-modulation distortion. In this proposed design, a new type of capacitive shunt switch is designed and analyzed for RF applications. The switch is designed both in UP and DOWN-states. The proposed switch design consists of substrate, co-planar waveguide (CPW), dielectric material and suspended metallic bridge. The proposed MEMS switch has dimension of 508 µm × 620 µm with a height of 500 µm and implemented on GaAs as a substrate material with relative permittivity of 12.9. The geometry and results of the proposed switch is designed using Ansoft HFSS electromagnetic simulator based on finite element method (FEM). The electrostatic and electromagnetic result showed better performances such as return loss, insertion loss and isolation. The switch has also excellent isolation property of -48 dB at 26 GHz.
Welcome to International Journal of Engineering Research and Development (IJERD)IJERD Editor
call for paper 2012, hard copy of journal, research paper publishing, where to publish research paper,
journal publishing, how to publish research paper, Call For research paper, international journal, publishing a paper, IJERD, journal of science and technology, how to get a research paper published, publishing a paper, publishing of journal, publishing of research paper, reserach and review articles, IJERD Journal, How to publish your research paper, publish research paper, open access engineering journal, Engineering journal, Mathemetics journal, Physics journal, Chemistry journal, Computer Engineering, Computer Science journal, how to submit your paper, peer reviw journal, indexed journal, reserach and review articles, engineering journal, www.ijerd.com, research journals
This document proposes and validates an equivalent circuit model for a wireless power transfer system capable of transferring 220W of power over a 30cm air gap with 95% efficiency. The model represents the transmitter and receiver coils as inductors with low mutual coupling. Analytical expressions for the model are derived and validated using finite element analysis and experimental results. Loss analysis is also performed to investigate skin effect and proximity effect losses at high operating frequencies. A new coil spatial design is proposed to reduce such losses compared to conventional coil designs.
The given paper presents a hybrid electromagnetic suspension designed for high-speed vacuum transport, where the main levitation force is generated by permanent magnets, while the electromagnet controls the air gap. The computer model is designed by means of MATLAB/Simulink software package, which allows us to simulate the dynamic operational modes of the system. The calculated studies are carried out when the vehicle accelerating to 1000 km/h with account of track irregularities. Permanent magnets incorporated in the system of electromagnetic suspension make it possible to reduce the energy consumption needed for levitation force generation.
Stochastic estimation methods for induction motor transient thermal monitorin...Mellah Hacene
The induction machine, because of its robustness and low-cost, is commonly used in the industry. Nevertheless, as every type of electrical machine, this machine suffers of some limitations. The most important one is the working temperature which is the dimensioning parameter for the definition of the nominal working point and the machine lifetime. Due to a strong demand concerning thermal monitoring methods appeared in the industry sector. In this context, the adding of temperature sensors is not acceptable and the studied methods tend to use sensorless approaches such as observators or parameters estimators like the extended Kalman Filter (EKF). Then the important criteria are reliability, computational cost ad real time implementation.
IRJET- Silicon based Molecular ElectronicIRJET Journal
This document presents a theoretical framework for modeling molecular electronics on silicon substrates. It combines a first-principles description of molecules with a semi-empirical treatment of silicon's bulk band structure. The framework is used to demonstrate negative differential resistance in a molecular resonant tunneling diode when molecular levels are driven by an STM tip into silicon's band gap. Specifically, it shows negative differential resistance peaks for styrene molecules on p-doped silicon at positive biases, and potentially for negative biases on n-doped silicon. This molecular resonant tunneling effect could enable new types of logic and memory devices integrating molecules with silicon technology.
Cosine modulated filter bank transmultiplexer using kaiser windowIAEME Publication
This document summarizes a research paper on designing a near perfect reconstruction cosine modulated filter-bank transmultiplexer using Kaiser window functions. It discusses using Kaiser windows with high side-lobe fall off rates to design prototype filters for analysis and synthesis sections. It also compares using an optimization algorithm versus no optimization to reduce inter-symbol interference and inter-carrier interference. The simulation results show the optimization approach provides less error compared to no optimization.
The advancement & effect of six sigma approach in a modernIAEME Publication
This document summarizes research on the advancement and effects of Six Sigma approaches in modern industries. It finds that Six Sigma has been successfully applied in manufacturing industries to improve processes using DMAIC methodology. Some large corporations have integrated Six Sigma so well into their culture that it has become the foundation of the company. The document also examines key factors for successful Six Sigma implementation, such as management commitment, understanding of Six Sigma tools and techniques, linking Six Sigma to business strategy and customers, project selection and tracking, organizational infrastructure, and cultural change. Overall, the research finds that Six Sigma activities can contribute to process management refreshment, quality improvement, and increased corporate competitiveness.
High step up boost converter based micro inverter with mppt and current controlIAEME Publication
This document summarizes a research paper that proposes a high step-up boost converter-based micro inverter system for grid-connected photovoltaic power generation. A high step-up boost converter is used to efficiently transfer maximum power from the solar panel to the grid. An incremental conductance maximum power point tracking algorithm controls the converter to extract maximum power. A single-phase inverter with current control is also implemented for grid synchronization. The proposed system was modeled and simulated in MATLAB/Simulink to validate the design of the high step-up converter and maximum power point tracking approach.
Script identification from printed document images using statisticalIAEME Publication
The document presents a technique for identifying the script of document images as Kannada, Hindi, or English. It segments words from a single line of text and extracts statistics of horizontal and vertical run objects. A linear discriminant function is then used to classify the script. The technique was tested on 300 images and achieved 93% accuracy for Hindi, 90% for English, and 86% for Kannada. It segments words by determining vertical projections and generates bounding boxes around words. The technique aims to automatically identify the script of multi-script documents in India in an efficient manner.
Detection and analysis of power quality disturbances under faulty conditions ...IAEME Publication
This document discusses power quality disturbances in electrical power systems. It begins with an introduction that defines power quality and common power quality disturbances. It then discusses how power quality disturbances can be detected and analyzed under faulty conditions in a simulated four bus power system model in MATLAB/Simulink. Various types of faults are created at the load bus, and power quality disturbances are detected at the generator bus. The document provides classification of different types of power quality disturbances based on standards and considers causes and impacts of disturbances on power systems.
The document describes a mathematical model and solution method for a generalized fuzzy assignment problem (FGAP) with restrictions on both job costs and person costs. Costs are represented as trapezoidal fuzzy numbers. The problem is to minimize total assignment cost subject to constraints that the cost of assigning a job cannot exceed the job's cost limit and the cost assigned to a person cannot exceed the person's cost limit based on their qualifications. A judging matrix approach and Yager's ranking method are used to determine if a solution exists. If so, a modified extremum difference method is applied to obtain an initial feasible solution, and a modified incremental method is used to find the optimal solution. The method is demonstrated on a numerical example and the optimal solution
Asset management efficiency of selected cement companies in tamilIAEME Publication
This document summarizes a study on asset management efficiency of selected cement companies in Tamil Nadu from 1996-1997 to 2005-2006. It used Data Envelopment Analysis to evaluate the efficiency of companies. The analysis found that the cement industry efficiently utilized assets to maximize sales, except during 1997-1998, 1998-1999 and 2002-2003. At the individual company level, India Cements and Madras Cements utilized assets most efficiently. The conclusion is that the industry efficiently used assets to increase sales, with some periods of underutilization due to capacity additions.
A new control methods for offshore grid connected wind energy conversion syst...IAEME Publication
This document summarizes a new control method for an offshore wind energy conversion system using a doubly fed induction generator and Z-source inverter. Two control methods are proposed - capacitor voltage control and DC-link voltage control. Simulation results show that for capacitor voltage control, the rotor speed tracks the maximum power point, extracted mechanical power tracks maximum turbine power, and capacitor voltage is kept constant. The power delivered to the grid matches the extracted mechanical power. DC-link voltage control maintains a constant DC-link voltage while capacitor voltage and power outputs vary with shoot-through time. Capacitor voltage control regulates power transfer more effectively.
The main objective of this research work is to develop KY conveter topology for renewable energy sources.Solar energy is the readily available and is the cheapest form of energy. It is non-polluting and environment friendly. The development of high static gain DC-DC converters is an important research area due to the crescent demand of this technology for several applications supplied by low DC output voltage power sources. It is used to provide the uninterruptable power supply and battery powered to the system. So here, step-up DC-DC converters based on the KY converter are proposed for LED lighting systems. The proposed topologies present high voltages and high efficiency for low input voltage and high output voltage applications. The simulation results of the proposed topology have been presented using MATLAB/SIMULINK software.
Performance evaluation of reversible logic based cntfet demultiplexer 2IAEME Publication
This document discusses the design and analysis of a reversible logic based carbon nanotube field effect transistor (CNTFET) demultiplexer. It presents the realization of 1:2 and 1:4 demultiplexers using reversible logic gates implemented with CNTFETs. Simulation results show the transient response and power consumption of the reversible logic CNTFET demultiplexers, with 0.8 and 1.6 nanowatts for the 1:2 and 1:4 designs respectively. This is compared to conventional CMOS demultiplexer designs, showing an improvement in power reduction achieved with the reversible logic CNTFET approach. Challenges in CNT fabrication that could impact robust circuits are also discussed.
Performance evaluation of reversible logic based cntfet demultiplexer 2IAEME Publication
This document discusses the design and analysis of a reversible logic based carbon nanotube field effect transistor (CNTFET) demultiplexer. It presents the realization of 1:2 and 1:4 demultiplexers using reversible logic gates implemented with CNTFETs. Simulation results show the transient response and power consumption of the reversible logic CNTFET demultiplexers, with 0.8 and 1.6 nanowatts for the 1:2 and 1:4 designs respectively. This is compared to conventional CMOS demultiplexer designs, showing an improvement in power reduction achieved with the reversible logic CNTFET approach. Challenges in fabricating robust CNT-based circuits are also discussed.
Experimental investigations of microstrip distributed memsIAEME Publication
This document summarizes an experimental investigation of a microstrip distributed MEMS transmission line phase shifter. It presents the measured and simulated results of a microstrip conductor that is lifted from the ground plane to form a parallel plate capacitance. The structure achieved a measured phase shift of 5 degrees at 10 GHz with a loss of 3.46 dB, compared to simulated values of 9 degrees and 0.41 dB. The document also describes the design, fabrication, and testing of the phase shifter, including calculating its characteristic impedance, phase velocity, and phase shift through simulation and analytical formulas.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
This paper presents an analytical comparison between two-level inverter and three-level neutral point diode clamped inverters for electric vehicle traction purposes. The main objective of the research is to declare the main differences in the performance of the two inverter schemes in terms of the switching and conduction losses over an entire domain of the modulation index and the phase angle distribution, steady-state operation, transient operation at a wide range of speed variation, and the total harmonic distortion THD% of the line voltage output waveform. It also declares the analysis of the three-level neutral point diode clamped inverter (NPCI) obstacle and the unbalance of the DC-link capacitor voltages. The introduced scheme presents an Induction Motor (IM) drive for electric vehicle (EV) applications. Considering the dynamic operation of the EV, the speed of the three-phase induction motor is controlled using a scalar V/Hz control for the full range of the IM power factor (PF). A comprehensive MATLAB/Simulink model for the proposed scheme is established.
A new hybrid method for mutual coupling minimization of an antenna array IJECEIAES
In this paper, a simultaneous application of geometric modification on patch elements and electromagnetic band gap (EBG) electromagnetic bandgap structures (hybrid method) has been suggested for 3.5 GHz wireless communication applications, to minimize the mutual coupling between radiating elements of microstrip array antennas. The suggested EBG slotted structure is composed of a one square ring and three squares placed on Rogers RO3010 having 10.2 and h=1.27 mm which presents respectively its dielectric constant and thickness. In this approach, the patch elements are geometrically modified, while also employing EBG structures, formed by four EBG cells, placed between the array elements at a near distance. The modification of the geometry of the antenna and the introduction of EBG reduces the mutual coupling of an array antenna with approximately 33 dB on the one hand and improves the antenna gain by approximately 0.43 dB on the other hand. Initially, slots are introduced in the patch geometry and then four EBG unit cells are inserted between two patches, operating at 3.5 GHz. The antenna array design parameters were optimized.
This document discusses the simulation of electrical field distribution in non-uniform dielectrics using the charge simulation method. It presents programs that can simulate field distribution in arrangements with cylinders of varying radii, insulation layers, and dielectric constants. The programs calculate accuracy indexes like potential error and angular displacement of field vectors. Simulation results show the field distribution through equipotential lines and potential/field values can be determined at any point. The programs allow estimating insulation withstand for power transformer outlet systems with accuracy under 0.58% for potentials.
The document proposes a novel differential linear electrostatic motor that operates on the principle of the electric field effect on dielectric materials. The motor has a simple structure that simplifies production. It also allows for precise control of velocity and position through advanced motion control options. Simulation results are presented that demonstrate the proposed control methods and show the practical viability of the motor. The motor consists of a dielectric slab rotor between two pairs of capacitor plates. Applying voltage to one pair of plates generates force on the slab, causing it to move linearly in either direction. Various control methods using DC and sinusoidal voltages are simulated.
Abstract: In this paper circuit for coilgun is simulated and analyzed using SIMULINK. Behavior of the magnetic field due to the current carrying coil is analyzed. Also, the effect on the coilgun performance for different weights of projectiles is investigated. The speed profile for different positions of the projectile is observed which is a critical parameter for coilgun operation. A comparison is drawn between the simulated and experimental results.
IRJET- Modeling and Simulation of Electric Discharge Machine (EDM) and WEDM u...IRJET Journal
This document summarizes a study that used COMSOL Multiphysics software to simulate electric field distribution in electric discharge machining (EDM) and wire EDM processes. The study modeled electric fields using different dielectric systems, varying the inter-electrode gap and supply voltage. Results showed that maximum electric field depends on these parameters. In wire EDM, decreasing the frontal gap was found to increase the electric field angle and reduce side overcut in the workpiece. Overall, the simulation helped predict overcut and optimize process parameters to improve machining efficiency.
SIMULATION OF A MATHEMATICAL MODEL OF A WIND TURBINE Mellah Hacene
Abstract
This paper presents a mathematical model of a wind turbine and its simulation. This is one of the main resources available to
the island system (Grid-Off system).
Keywords: wind turbine, island system, Grid-Off system, renewable energy source.
1 Introduction to wind turbine
A wind turbine is basically a converter, or in other words a device that transforms one type of energy into
another. In this case, it is the transformation of mechanical energy into electrical energy.
The source of mechanical energy is the flow (flow) of air, which acts on the turbine blades. The blades are
located on a shaft which is coupled to a permanent magnet (magnet). The magnets are a rotating part, which is
named the rotor. The stator consists of a coil (coils) of wound copper conductor. Due to the changing magnetic
field (PM - permanent magnets), an electrical voltage is induced at the terminals (terminals) of the coil / coils. In
essence, it is a synchronous generator, since the variable electric field is coupled (synchronized) with the speed
of the changing and magnetic fields. [1-5]
A schematic block diagram of a wind turbine as a synchronous generator is shown in Fig. 1.
IRJET- Performance Analysis and Simulation of Fuel Cell SystemIRJET Journal
This document presents a performance analysis and simulation of a fuel cell system. It analyzes how operating parameters like temperature, hydrogen and oxygen pressure, and active cell area affect fuel cell performance. A mathematical model of the fuel cell is described. The model is simulated using MATLAB/SIMULINK to analyze the fuel cell's voltage-current characteristics and maximum power output of approximately 8KW. Simulation results verify that increasing temperature and gas pressures improves performance while a larger active cell area reduces voltage at constant current.
Analysis and design of three legged 400 kv double circuit steel transmissionIAEME Publication
This document summarizes the analysis and design of three-legged 400kV double circuit steel transmission line towers with angle and tube sections. The study models the towers in STAAD.Pro to analyze member forces and deflections under various loading conditions. It finds that the tube section tower design has better force-weight performance, with member forces and overall weight reduced by around 20% compared to the angle section tower. The tube section tower thus provides a more economical design for the three-legged 400kV transmission line towers.
Design and modeling of solenoid inductor integrated with FeNiCo in high frequ...TELKOMNIKA JOURNAL
In this work, the design and modeling of the solenoid inductor are discussed. The layout of integrated inductors with magnetic cores and their geometrical parameters are developed. The quality factor Q and inductance value L are derived from the S-parameters and plotted versus frequency. The effect of solenoid inductor geometry on inductance and quality factor are studied via simulation using MATLAB. The solenoid inductor geometry parameters considered are the turn’s number, the magnetic core length, the width of a magnetic core, the gap between turns, the magnetic core thickness, the coil thickness, and solenoid inductor oxide thickness. The performance of the proposed solenoid inductor integrated with FeNiCo is compared with other solenoid inductors.
Modelling of fuzzy logic controller for variable step mppt in photovoltaic sy...eSAT Journals
Abstract
The output power of photovoltaic electrical systems is highly dynamic and non-linear in nature. In order to extract maximum power
from such systems, maximum power point tracking (MPPT) technique is required. MPPT techniques with variable step-size of
perturbation track the maximum power point (MPP) with more efficiency. In this paper, a model of a fuzzy logic controller (FLC) for
determining the step-size of perturbation in duty-cycle of a photovoltaic electrical system to track MPP is presented. The model is
simulated in MATLAB/Simulink®.
Keywords: Maximum power point tracking, perturb and observe, boost converter, fuzzy logic control, membership
function, crisp universe, centre of area, pulse width modulation
Design and Simulation of a Fractal Micro-TransformerIJERA Editor
This document summarizes the design and simulation of a fractal micro-transformer. The researchers designed an air-core fractal micro-transformer using finite element modeling software. Simulation results showed improved performance parameters compared to macro transformers, including higher voltage gain. Electric displacement and magnetic energy density within the micro-transformer were determined to be 2 x 10-11 C/m2 and 100 J/m3 respectively. Losses within the air-core design were minimal at 3 W/m3. The micro-transformer was concluded to be suitable for integration in MEMS and VLSI applications due to its small size, high impedance, and isolation capabilities.
A Self-Balancing Switched Capacitor Multilevel Inverter Structure with Six-fo...IRJET Journal
This document describes a novel self-balancing switched capacitor multilevel inverter structure that can generate 13 voltage levels from a single DC supply using 3 capacitors and 14 switches. Key features include its ability to automatically balance capacitor voltages through series and parallel charging and discharging, and its reduction in maximum blocking voltage stress across switches compared to similar topologies. The document outlines the circuit configuration, operating principle with 13 states, capacitor sizing analysis, and modulation scheme. Simulation results validate the performance and viability of the proposed topology, which is well-suited for renewable energy applications due to its reduced switching stresses.
Advanced five level five phase cascaded multilevel inverter with svpwm algoritIAEME Publication
The document describes an advanced five-level five-phase cascaded multilevel inverter with space vector pulse width modulation (SVPWM) control. It discusses the working principles and operation of multilevel inverters, including their advantages over conventional two-level inverters such as producing higher quality waveforms with lower harmonic distortion. Three main multilevel inverter topologies are described: diode-clamped, flying capacitor, and cascaded H-bridge inverters. The document then focuses on the proposed five-level five-phase cascaded full-bridge inverter circuit and presents simulation results of its output voltages.
Similar to The influence of air gaps at 0.4 duty cycle on magnetic core type ‘e’ to increase (20)
Submission Deadline: 30th September 2022
Acceptance Notification: Within Three Days’ time period
Online Publication: Within 24 Hrs. time Period
Expected Date of Dispatch of Printed Journal: 5th October 2022
MODELING AND ANALYSIS OF SURFACE ROUGHNESS AND WHITE LATER THICKNESS IN WIRE-...IAEME Publication
White layer thickness (WLT) formed and surface roughness in wire electric discharge turning (WEDT) of tungsten carbide composite has been made to model through response surface methodology (RSM). A Taguchi’s standard Design of experiments involving five input variables with three levels has been employed to establish a mathematical model between input parameters and responses. Percentage of cobalt content, spindle speed, Pulse on-time, wire feed and pulse off-time were changed during the experimental tests based on the Taguchi’s orthogonal array L27 (3^13). Analysis of variance (ANOVA) revealed that the mathematical models obtained can adequately describe performance within the parameters of the factors considered. There was a good agreement between the experimental and predicted values in this study.
A STUDY ON THE REASONS FOR TRANSGENDER TO BECOME ENTREPRENEURSIAEME Publication
The study explores the reasons for a transgender to become entrepreneurs. In this study transgender entrepreneur was taken as independent variable and reasons to become as dependent variable. Data were collected through a structured questionnaire containing a five point Likert Scale. The study examined the data of 30 transgender entrepreneurs in Salem Municipal Corporation of Tamil Nadu State, India. Simple Random sampling technique was used. Garrett Ranking Technique (Percentile Position, Mean Scores) was used as the analysis for the present study to identify the top 13 stimulus factors for establishment of trans entrepreneurial venture. Economic advancement of a nation is governed upon the upshot of a resolute entrepreneurial doings. The conception of entrepreneurship has stretched and materialized to the socially deflated uncharted sections of transgender community. Presently transgenders have smashed their stereotypes and are making recent headlines of achievements in various fields of our Indian society. The trans-community is gradually being observed in a new light and has been trying to achieve prospective growth in entrepreneurship. The findings of the research revealed that the optimistic changes are taking place to change affirmative societal outlook of the transgender for entrepreneurial ventureship. It also laid emphasis on other transgenders to renovate their traditional living. The paper also highlights that legislators, supervisory body should endorse an impartial canons and reforms in Tamil Nadu Transgender Welfare Board Association.
BROAD UNEXPOSED SKILLS OF TRANSGENDER ENTREPRENEURSIAEME Publication
Since ages gender difference is always a debatable theme whether caused by nature, evolution or environment. The birth of a transgender is dreadful not only for the child but also for their parents. The pain of living in the wrong physique and treated as second class victimized citizen is outrageous and fully harboured with vicious baseless negative scruples. For so long, social exclusion had perpetuated inequality and deprivation experiencing ingrained malign stigma and besieged victims of crime or violence across their life spans. They are pushed into the murky way of life with a source of eternal disgust, bereft sexual potency and perennial fear. Although they are highly visible but very little is known about them. The common public needs to comprehend the ravaged arrogance on these insensitive souls and assist in integrating them into the mainstream by offering equal opportunity, treat with humanity and respect their dignity. Entrepreneurship in the current age is endorsing the gender fairness movement. Unstable careers and economic inadequacy had inclined one of the gender variant people called Transgender to become entrepreneurs. These tiny budding entrepreneurs resulted in economic transition by means of employment, free from the clutches of stereotype jobs, raised standard of living and handful of financial empowerment. Besides all these inhibitions, they were able to witness a platform for skill set development that ignited them to enter into entrepreneurial domain. This paper epitomizes skill sets involved in trans-entrepreneurs of Thoothukudi Municipal Corporation of Tamil Nadu State and is a groundbreaking determination to sightsee various skills incorporated and the impact on entrepreneurship.
DETERMINANTS AFFECTING THE USER'S INTENTION TO USE MOBILE BANKING APPLICATIONSIAEME Publication
The banking and financial services industries are experiencing increased technology penetration. Among them, the banking industry has made technological advancements to better serve the general populace. The economy focused on transforming the banking sector's system into a cashless, paperless, and faceless one. The researcher wants to evaluate the user's intention for utilising a mobile banking application. The study also examines the variables affecting the user's behaviour intention when selecting specific applications for financial transactions. The researcher employed a well-structured questionnaire and a descriptive study methodology to gather the respondents' primary data utilising the snowball sampling technique. The study includes variables like performance expectations, effort expectations, social impact, enabling circumstances, and perceived risk. Each of the aforementioned variables has a major impact on how users utilise mobile banking applications. The outcome will assist the service provider in comprehending the user's history with mobile banking applications.
ANALYSE THE USER PREDILECTION ON GPAY AND PHONEPE FOR DIGITAL TRANSACTIONSIAEME Publication
Technology upgradation in banking sector took the economy to view that payment mode towards online transactions using mobile applications. This system enabled connectivity between banks, Merchant and user in a convenient mode. there are various applications used for online transactions such as Google pay, Paytm, freecharge, mobikiwi, oxygen, phonepe and so on and it also includes mobile banking applications. The study aimed at evaluating the predilection of the user in adopting digital transaction. The study is descriptive in nature. The researcher used random sample techniques to collect the data. The findings reveal that mobile applications differ with the quality of service rendered by Gpay and Phonepe. The researcher suggest the Phonepe application should focus on implementing the application should be user friendly interface and Gpay on motivating the users to feel the importance of request for money and modes of payments in the application.
VOICE BASED ATM FOR VISUALLY IMPAIRED USING ARDUINOIAEME Publication
The prototype of a voice-based ATM for visually impaired using Arduino is to help people who are blind. This uses RFID cards which contain users fingerprint encrypted on it and interacts with the users through voice commands. ATM operates when sensor detects the presence of one person in the cabin. After scanning the RFID card, it will ask to select the mode like –normal or blind. User can select the respective mode through voice input, if blind mode is selected the balance check or cash withdraw can be done through voice input. Normal mode procedure is same as the existing ATM.
IMPACT OF EMOTIONAL INTELLIGENCE ON HUMAN RESOURCE MANAGEMENT PRACTICES AMONG...IAEME Publication
There is increasing acceptability of emotional intelligence as a major factor in personality assessment and effective human resource management. Emotional intelligence as the ability to build capacity, empathize, co-operate, motivate and develop others cannot be divorced from both effective performance and human resource management systems. The human person is crucial in defining organizational leadership and fortunes in terms of challenges and opportunities and walking across both multinational and bilateral relationships. The growing complexity of the business world requires a great deal of self-confidence, integrity, communication, conflict and diversity management to keep the global enterprise within the paths of productivity and sustainability. Using the exploratory research design and 255 participants the result of this original study indicates strong positive correlation between emotional intelligence and effective human resource management. The paper offers suggestions on further studies between emotional intelligence and human capital development and recommends for conflict management as an integral part of effective human resource management.
VISUALISING AGING PARENTS & THEIR CLOSE CARERS LIFE JOURNEY IN AGING ECONOMYIAEME Publication
Our life journey, in general, is closely defined by the way we understand the meaning of why we coexist and deal with its challenges. As we develop the "inspiration economy", we could say that nearly all of the challenges we have faced are opportunities that help us to discover the rest of our journey. In this note paper, we explore how being faced with the opportunity of being a close carer for an aging parent with dementia brought intangible discoveries that changed our insight of the meaning of the rest of our life journey.
A STUDY ON THE IMPACT OF ORGANIZATIONAL CULTURE ON THE EFFECTIVENESS OF PERFO...IAEME Publication
The main objective of this study is to analyze the impact of aspects of Organizational Culture on the Effectiveness of the Performance Management System (PMS) in the Health Care Organization at Thanjavur. Organizational Culture and PMS play a crucial role in present-day organizations in achieving their objectives. PMS needs employees’ cooperation to achieve its intended objectives. Employees' cooperation depends upon the organization’s culture. The present study uses exploratory research to examine the relationship between the Organization's culture and the Effectiveness of the Performance Management System. The study uses a Structured Questionnaire to collect the primary data. For this study, Thirty-six non-clinical employees were selected from twelve randomly selected Health Care organizations at Thanjavur. Thirty-two fully completed questionnaires were received.
Living in 21st century in itself reminds all of us the necessity of police and its administration. As more and more we are entering into the modern society and culture, the more we require the services of the so called ‘Khaki Worthy’ men i.e., the police personnel. Whether we talk of Indian police or the other nation’s police, they all have the same recognition as they have in India. But as already mentioned, their services and requirements are different after the like 26th November, 2008 incidents, where they without saving their own lives has sacrificed themselves without any hitch and without caring about their respective family members and wards. In other words, they are like our heroes and mentors who can guide us from the darkness of fear, militancy, corruption and other dark sides of life and so on. Now the question arises, if Gandhi would have been alive today, what would have been his reaction/opinion to the police and its functioning? Would he have some thing different in his mind now what he had been in his mind before the partition or would he be going to start some Satyagraha in the form of some improvement in the functioning of the police administration? Really these questions or rather night mares can come to any one’s mind, when there is too much confusion is prevailing in our minds, when there is too much corruption in the society and when the polices working is also in the questioning because of one or the other case throughout the India. It is matter of great concern that we have to thing over our administration and our practical approach because the police personals are also like us, they are part and parcel of our society and among one of us, so why we all are pin pointing towards them.
A STUDY ON TALENT MANAGEMENT AND ITS IMPACT ON EMPLOYEE RETENTION IN SELECTED...IAEME Publication
The goal of this study was to see how talent management affected employee retention in the selected IT organizations in Chennai. The fundamental issue was the difficulty to attract, hire, and retain talented personnel who perform well and the gap between supply and demand of talent acquisition and retaining them within the firms. The study's main goals were to determine the impact of talent management on employee retention in IT companies in Chennai, investigate talent management strategies that IT companies could use to improve talent acquisition, performance management, career planning and formulate retention strategies that the IT firms could use. The respondents were given a structured close-ended questionnaire with the 5 Point Likert Scale as part of the study's quantitative research design. The target population consisted of 289 IT professionals. The questionnaires were distributed and collected by the researcher directly. The Statistical Package for Social Sciences (SPSS) was used to collect and analyse the questionnaire responses. Hypotheses that were formulated for the various areas of the study were tested using a variety of statistical tests. The key findings of the study suggested that talent management had an impact on employee retention. The studies also found that there is a clear link between the implementation of talent management and retention measures. Management should provide enough training and development for employees, clarify job responsibilities, provide adequate remuneration packages, and recognise employees for exceptional performance.
ATTRITION IN THE IT INDUSTRY DURING COVID-19 PANDEMIC: LINKING EMOTIONAL INTE...IAEME Publication
Globally, Millions of dollars were spent by the organizations for employing skilled Information Technology (IT) professionals. It is costly to replace unskilled employees with IT professionals possessing technical skills and competencies that aid in interconnecting the business processes. The organization’s employment tactics were forced to alter by globalization along with technological innovations as they consistently diminish to remain lean, outsource to concentrate on core competencies along with restructuring/reallocate personnel to gather efficiency. As other jobs, organizations or professions have become reasonably more appropriate in a shifting employment landscape, the above alterations trigger both involuntary as well as voluntary turnover. The employee view on jobs is also afflicted by the COVID-19 pandemic along with the employee-driven labour market. So, having effective strategies is necessary to tackle the withdrawal rate of employees. By associating Emotional Intelligence (EI) along with Talent Management (TM) in the IT industry, the rise in attrition rate was analyzed in this study. Only 303 respondents were collected out of 350 participants to whom questionnaires were distributed. From the employees of IT organizations located in Bangalore (India), the data were congregated. A simple random sampling methodology was employed to congregate data as of the respondents. Generating the hypothesis along with testing is eventuated. The effect of EI and TM along with regression analysis between TM and EI was analyzed. The outcomes indicated that employee and Organizational Performance (OP) were elevated by effective EI along with TM.
INFLUENCE OF TALENT MANAGEMENT PRACTICES ON ORGANIZATIONAL PERFORMANCE A STUD...IAEME Publication
By implementing talent management strategy, organizations would have the option to retain their skilled professionals while additionally working on their overall performance. It is the course of appropriately utilizing the ideal individuals, setting them up for future top positions, exploring and dealing with their performance, and holding them back from leaving the organization. It is employee performance that determines the success of every organization. The firm quickly obtains an upper hand over its rivals in the event that its employees having particular skills that cannot be duplicated by the competitors. Thus, firms are centred on creating successful talent management practices and processes to deal with the unique human resources. Firms are additionally endeavouring to keep their top/key staff since on the off chance that they leave; the whole store of information leaves the firm's hands. The study's objective was to determine the impact of talent management on organizational performance among the selected IT organizations in Chennai. The study recommends that talent management limitedly affects performance. On the off chance that this talent is appropriately management and implemented properly, organizations might benefit as much as possible from their maintained assets to support development and productivity, both monetarily and non-monetarily.
A STUDY OF VARIOUS TYPES OF LOANS OF SELECTED PUBLIC AND PRIVATE SECTOR BANKS...IAEME Publication
Banking regulations act of India, 1949 defines banking as “acceptance of deposits for the purpose of lending or investment from the public, repayment on demand or otherwise and withdrawable through cheques, drafts order or otherwise”, the major participants of the Indian financial system are commercial banks, the financial institution encompassing term lending institutions. Investments institutions, specialized financial institution and the state level development banks, non banking financial companies (NBFC) and other market intermediaries such has the stock brokers and money lenders are among the oldest of the certain variants of NBFC and the oldest market participants. The asset quality of banks is one of the most important indicators of their financial health. The Indian banking sector has been facing severe problems of increasing Non- Performing Assets (NPAs). The NPAs growth directly and indirectly affects the quality of assets and profitability of banks. It also shows the efficiency of banks credit risk management and the recovery effectiveness. NPA do not generate any income, whereas, the bank is required to make provisions for such as assets that why is a double edge weapon. This paper outlines the concept of quality of bank loans of different types like Housing, Agriculture and MSME loans in state Haryana of selected public and private sector banks. This study is highlighting problems associated with the role of commercial bank in financing Small and Medium Scale Enterprises (SME). The overall objective of the research was to assess the effect of the financing provisions existing for the setting up and operations of MSMEs in the country and to generate recommendations for more robust financing mechanisms for successful operation of the MSMEs, in turn understanding the impact of MSME loans on financial institutions due to NPA. There are many research conducted on the topic of Non- Performing Assets (NPA) Management, concerning particular bank, comparative study of public and private banks etc. In this paper the researcher is considering the aggregate data of selected public sector and private sector banks and attempts to compare the NPA of Housing, Agriculture and MSME loans in state Haryana of public and private sector banks. The tools used in the study are average and Anova test and variance. The findings reveal that NPA is common problem for both public and private sector banks and is associated with all types of loans either that is housing loans, agriculture loans and loans to SMES. NPAs of both public and private sector banks show the increasing trend. In 2010-11 GNPA of public and private sector were at same level it was 2% but after 2010-11 it increased in many fold and at present there is GNPA in some more than 15%. It shows the dark area of Indian banking sector.
EXPERIMENTAL STUDY OF MECHANICAL AND TRIBOLOGICAL RELATION OF NYLON/BaSO4 POL...IAEME Publication
An experiment conducted in this study found that BaSO4 changed Nylon 6's mechanical properties. By changing the weight ratios, BaSO4 was used to make Nylon 6. This Researcher looked into how hard Nylon-6/BaSO4 composites are and how well they wear. Experiments were done based on Taguchi design L9. Nylon-6/BaSO4 composites can be tested for their hardness number using a Rockwell hardness testing apparatus. On Nylon/BaSO4, the wear behavior was measured by a wear monitor, pinon-disc friction by varying reinforcement, sliding speed, and sliding distance, and the microstructure of the crack surfaces was observed by SEM. This study provides significant contributions to ultimate strength by increasing BaSO4 content up to 16% in the composites, and sliding speed contributes 72.45% to the wear rate
ROLE OF SOCIAL ENTREPRENEURSHIP IN RURAL DEVELOPMENT OF INDIA - PROBLEMS AND ...IAEME Publication
The majority of the population in India lives in villages. The village is the back bone of the country. Village or rural industries play an important role in the national economy, particularly in the rural development. Developing the rural economy is one of the key indicators towards a country’s success. Whether it be the need to look after the welfare of the farmers or invest in rural infrastructure, Governments have to ensure that rural development isn’t compromised. The economic development of our country largely depends on the progress of rural areas and the standard of living of rural masses. Village or rural industries play an important role in the national economy, particularly in the rural development. Rural entrepreneurship is based on stimulating local entrepreneurial talent and the subsequent growth of indigenous enterprises. It recognizes opportunity in the rural areas and accelerates a unique blend of resources either inside or outside of agriculture. Rural entrepreneurship brings an economic value to the rural sector by creating new methods of production, new markets, new products and generate employment opportunities thereby ensuring continuous rural development. Social Entrepreneurship has the direct and primary objective of serving the society along with the earning profits. So, social entrepreneurship is different from the economic entrepreneurship as its basic objective is not to earn profits but for providing innovative solutions to meet the society needs which are not taken care by majority of the entrepreneurs as they are in the business for profit making as a sole objective. So, the Social Entrepreneurs have the huge growth potential particularly in the developing countries like India where we have huge societal disparities in terms of the financial positions of the population. Still 22 percent of the Indian population is below the poverty line and also there is disparity among the rural & urban population in terms of families living under BPL. 25.7 percent of the rural population & 13.7 percent of the urban population is under BPL which clearly shows the disparity of the poor people in the rural and urban areas. The need to develop social entrepreneurship in agriculture is dictated by a large number of social problems. Such problems include low living standards, unemployment, and social tension. The reasons that led to the emergence of the practice of social entrepreneurship are the above factors. The research problem lays upon disclosing the importance of role of social entrepreneurship in rural development of India. The paper the tendencies of social entrepreneurship in India, to present successful examples of such business for providing recommendations how to improve situation in rural areas in terms of social entrepreneurship development. Indian government has made some steps towards development of social enterprises, social entrepreneurship, and social in- novation, but a lot remains to be improved.
OPTIMAL RECONFIGURATION OF POWER DISTRIBUTION RADIAL NETWORK USING HYBRID MET...IAEME Publication
Distribution system is a critical link between the electric power distributor and the consumers. Most of the distribution networks commonly used by the electric utility is the radial distribution network. However in this type of network, it has technical issues such as enormous power losses which affect the quality of the supply. Nowadays, the introduction of Distributed Generation (DG) units in the system help improve and support the voltage profile of the network as well as the performance of the system components through power loss mitigation. In this study network reconfiguration was done using two meta-heuristic algorithms Particle Swarm Optimization and Gravitational Search Algorithm (PSO-GSA) to enhance power quality and voltage profile in the system when simultaneously applied with the DG units. Backward/Forward Sweep Method was used in the load flow analysis and simulated using the MATLAB program. Five cases were considered in the Reconfiguration based on the contribution of DG units. The proposed method was tested using IEEE 33 bus system. Based on the results, there was a voltage profile improvement in the system from 0.9038 p.u. to 0.9594 p.u.. The integration of DG in the network also reduced power losses from 210.98 kW to 69.3963 kW. Simulated results are drawn to show the performance of each case.
APPLICATION OF FRUGAL APPROACH FOR PRODUCTIVITY IMPROVEMENT - A CASE STUDY OF...IAEME Publication
Manufacturing industries have witnessed an outburst in productivity. For productivity improvement manufacturing industries are taking various initiatives by using lean tools and techniques. However, in different manufacturing industries, frugal approach is applied in product design and services as a tool for improvement. Frugal approach contributed to prove less is more and seems indirectly contributing to improve productivity. Hence, there is need to understand status of frugal approach application in manufacturing industries. All manufacturing industries are trying hard and putting continuous efforts for competitive existence. For productivity improvements, manufacturing industries are coming up with different effective and efficient solutions in manufacturing processes and operations. To overcome current challenges, manufacturing industries have started using frugal approach in product design and services. For this study, methodology adopted with both primary and secondary sources of data. For primary source interview and observation technique is used and for secondary source review has done based on available literatures in website, printed magazines, manual etc. An attempt has made for understanding application of frugal approach with the study of manufacturing industry project. Manufacturing industry selected for this project study is Mahindra and Mahindra Ltd. This paper will help researcher to find the connections between the two concepts productivity improvement and frugal approach. This paper will help to understand significance of frugal approach for productivity improvement in manufacturing industry. This will also help to understand current scenario of frugal approach in manufacturing industry. In manufacturing industries various process are involved to deliver the final product. In the process of converting input in to output through manufacturing process productivity plays very critical role. Hence this study will help to evolve status of frugal approach in productivity improvement programme. The notion of frugal can be viewed as an approach towards productivity improvement in manufacturing industries.
A MULTIPLE – CHANNEL QUEUING MODELS ON FUZZY ENVIRONMENTIAEME Publication
In this paper, we investigated a queuing model of fuzzy environment-based a multiple channel queuing model (M/M/C) ( /FCFS) and study its performance under realistic conditions. It applies a nonagonal fuzzy number to analyse the relevant performance of a multiple channel queuing model (M/M/C) ( /FCFS). Based on the sub interval average ranking method for nonagonal fuzzy number, we convert fuzzy number to crisp one. Numerical results reveal that the efficiency of this method. Intuitively, the fuzzy environment adapts well to a multiple channel queuing models (M/M/C) ( /FCFS) are very well.