This document summarizes a study on simulating and evaluating the performance of a unified power quality conditioner (UPQC) using hysteresis current control. A UPQC consists of back-to-back connected shunt and series active power filters to compensate for load harmonics and voltage distortions. The shunt filter regulates DC link voltage and compensates for current harmonics and reactive power, while the series filter compensates for voltage harmonics. Simulation results show the UPQC is able to mitigate harmonics and improve power quality metrics like power factor to within IEEE standards.
IRJET- Power Quality Improvement using Active Power FilterIRJET Journal
This document discusses improving power quality using an active power filter. It proposes a novel circuit topology for a three-phase active power filter (APF) that can suppress harmonic currents and provide complete reactive power compensation. The proposed APF uses a two-arm bridge power converter along with filter inductors, reactive power capacitors, and capacitor/resistor filtering. It is shown to have enhanced harmonic compensation capabilities compared to conventional APF topologies. The APF aims to mitigate issues caused by nonlinear loads such as current harmonics, reduced power factor, and voltage distortions on distribution systems.
A NOVEL TCHNOLOGY FOR HARMONICS AND UNBALANCE COMPENSATION IN ELECTRIC TRACTI...ijiert bestjournal
Power quality problems in power systems have been i mproved due to nonlinear loads. To compensate these problems Direct Power Compensator was proposed in this paper. A Direct Power Compensator (DPC) is proposed in this paper to elim inate the harmonic currents,compensate power factor and voltage unbalance problems created by th e nonlinear loads present in three phase systems. A DPC contains back to back converter by sharing th e same dc link power and v/v transformer to provide a voltage balance in transmission line. Hys teresis harmonic current regulator is used to produce pulse for back to back converter. A control ler maintains the dc-link voltage and compensates the power factor,harmonic currents. A comparative analysis for traction system with and without DPC was performed using MATLAB Simulink . Simulation results show the controller advantages and the applicability of the proposed me thod in railway systems.
This document summarizes a research paper on simulating and investigating the performance of a series active power filter using hysteresis current control.
The paper presents the simulation of a hysteresis current controlled, three-phase series active power filter to improve power quality by compensating for harmonics and reactive power required by a non-linear load. The series active filter employs a simple method for calculating the reference compensation voltage based on p-q theory. The results show the active filter maintains total harmonic distortion well within IEEE standards, providing satisfactory mitigation of harmonics, reactive power compensation, and power factor improvement.
Welcome to International Journal of Engineering Research and Development (IJERD)IJERD Editor
This document summarizes a research paper that presents a design for a Unified Power Quality Conditioner connected to a three-phase four-wire distribution system to mitigate various power quality issues like voltage sag/swell, harmonics, and neutral current under different load conditions. A new control strategy is proposed based on extending single-phase instantaneous active and reactive power theory to the three-phase system to compensate for current imbalance. Simulation results in MATLAB/Simulink validate the UPQC's ability to mitigate issues and maintain a balanced source current under both linear and non-linear, balanced and unbalanced load conditions.
Harmonic Suppression of Shunt Hybrid Filter using LQR-PSO based IJECEIAES
In linear quadratic regulator (LQR), two different weighting matrices play an important role in presenting the performance of this controller. Instead of using classic common approach, which is trial and error method, this study proposes a particle swarm optimization (PSO) algorithm to track the best solution of the weighting matrices. The proposed algorithm is tested on shunt hybrid active power filter (APF) to mitigate the harmonic contents in voltage and current signals in a nonlinear load system. The modeling work of this proposed system is simulated using MATLAB/Simulink software. From the simulation, the obtained results proved that using PSO in tuning the LQR controller produce smoother nonlinear voltage and current signals. In fact, the amount of current to be injected into network can be reduced up to 95%. Besides, less time is consumed during searching the optimum weighting matrices using the proposed approach.
HARMONIC MITIGATION USING D STATCOM THROUGH A CURRENT CONTROL TECHNIQUEJournal For Research
The harmonic mitigation using shunt active filters are most widely used in industrial and commercial applications. In this paper a Multi-Level Inverter is considered as DSTATCOM to compensate harmonics. The mathematical modeling of the system and design of the controller using synchronous reference frame theory is also presented. The nonlinear load generally known as diode rectifier load and an unbalanced load is simulated with the system using MATLAB/SIMULINK.
Shunt active power filters based on diode clamped multilevel inverter and hys...Alexander Decker
This document discusses a shunt active power filter system based on an 11-step diode clamped multilevel inverter and hysteresis band current controller. The system aims to compensate for harmonics in non-linear loads and improve power quality. A two inverter shunt active power filter configuration is proposed to reduce total harmonic distortion and device ratings. Instantaneous reactive power theory is used to generate reference currents, which the hysteresis controller then uses to generate switching signals for the multilevel inverter. Simulation results show the system can achieve 1.8% THD, 0.99 power factor, and compensate 10MW of active and 0.3MVAR of reactive power.
Mitigation Unbalance Nonlinear Loads and Dissimilar Line Currents Using Shunt...INFOGAIN PUBLICATION
This document presents a new control method for a shunt active power filter (SAPF) to compensate for unbalanced nonlinear loads and dissimilar line currents. The proposed control method uses both dq-theory and instantaneous p-q power theory to calculate reference currents. Fuzzy logic control is also used to optimize the SAPF performance. Simulation results show the controller is effective at mitigating harmonic distortion, compensating load asymmetry, and eliminating negative and zero sequence currents. The total harmonic distortion of the line currents is reduced from 29.8% to 4.1% with this control approach.
IRJET- Power Quality Improvement using Active Power FilterIRJET Journal
This document discusses improving power quality using an active power filter. It proposes a novel circuit topology for a three-phase active power filter (APF) that can suppress harmonic currents and provide complete reactive power compensation. The proposed APF uses a two-arm bridge power converter along with filter inductors, reactive power capacitors, and capacitor/resistor filtering. It is shown to have enhanced harmonic compensation capabilities compared to conventional APF topologies. The APF aims to mitigate issues caused by nonlinear loads such as current harmonics, reduced power factor, and voltage distortions on distribution systems.
A NOVEL TCHNOLOGY FOR HARMONICS AND UNBALANCE COMPENSATION IN ELECTRIC TRACTI...ijiert bestjournal
Power quality problems in power systems have been i mproved due to nonlinear loads. To compensate these problems Direct Power Compensator was proposed in this paper. A Direct Power Compensator (DPC) is proposed in this paper to elim inate the harmonic currents,compensate power factor and voltage unbalance problems created by th e nonlinear loads present in three phase systems. A DPC contains back to back converter by sharing th e same dc link power and v/v transformer to provide a voltage balance in transmission line. Hys teresis harmonic current regulator is used to produce pulse for back to back converter. A control ler maintains the dc-link voltage and compensates the power factor,harmonic currents. A comparative analysis for traction system with and without DPC was performed using MATLAB Simulink . Simulation results show the controller advantages and the applicability of the proposed me thod in railway systems.
This document summarizes a research paper on simulating and investigating the performance of a series active power filter using hysteresis current control.
The paper presents the simulation of a hysteresis current controlled, three-phase series active power filter to improve power quality by compensating for harmonics and reactive power required by a non-linear load. The series active filter employs a simple method for calculating the reference compensation voltage based on p-q theory. The results show the active filter maintains total harmonic distortion well within IEEE standards, providing satisfactory mitigation of harmonics, reactive power compensation, and power factor improvement.
Welcome to International Journal of Engineering Research and Development (IJERD)IJERD Editor
This document summarizes a research paper that presents a design for a Unified Power Quality Conditioner connected to a three-phase four-wire distribution system to mitigate various power quality issues like voltage sag/swell, harmonics, and neutral current under different load conditions. A new control strategy is proposed based on extending single-phase instantaneous active and reactive power theory to the three-phase system to compensate for current imbalance. Simulation results in MATLAB/Simulink validate the UPQC's ability to mitigate issues and maintain a balanced source current under both linear and non-linear, balanced and unbalanced load conditions.
Harmonic Suppression of Shunt Hybrid Filter using LQR-PSO based IJECEIAES
In linear quadratic regulator (LQR), two different weighting matrices play an important role in presenting the performance of this controller. Instead of using classic common approach, which is trial and error method, this study proposes a particle swarm optimization (PSO) algorithm to track the best solution of the weighting matrices. The proposed algorithm is tested on shunt hybrid active power filter (APF) to mitigate the harmonic contents in voltage and current signals in a nonlinear load system. The modeling work of this proposed system is simulated using MATLAB/Simulink software. From the simulation, the obtained results proved that using PSO in tuning the LQR controller produce smoother nonlinear voltage and current signals. In fact, the amount of current to be injected into network can be reduced up to 95%. Besides, less time is consumed during searching the optimum weighting matrices using the proposed approach.
HARMONIC MITIGATION USING D STATCOM THROUGH A CURRENT CONTROL TECHNIQUEJournal For Research
The harmonic mitigation using shunt active filters are most widely used in industrial and commercial applications. In this paper a Multi-Level Inverter is considered as DSTATCOM to compensate harmonics. The mathematical modeling of the system and design of the controller using synchronous reference frame theory is also presented. The nonlinear load generally known as diode rectifier load and an unbalanced load is simulated with the system using MATLAB/SIMULINK.
Shunt active power filters based on diode clamped multilevel inverter and hys...Alexander Decker
This document discusses a shunt active power filter system based on an 11-step diode clamped multilevel inverter and hysteresis band current controller. The system aims to compensate for harmonics in non-linear loads and improve power quality. A two inverter shunt active power filter configuration is proposed to reduce total harmonic distortion and device ratings. Instantaneous reactive power theory is used to generate reference currents, which the hysteresis controller then uses to generate switching signals for the multilevel inverter. Simulation results show the system can achieve 1.8% THD, 0.99 power factor, and compensate 10MW of active and 0.3MVAR of reactive power.
Mitigation Unbalance Nonlinear Loads and Dissimilar Line Currents Using Shunt...INFOGAIN PUBLICATION
This document presents a new control method for a shunt active power filter (SAPF) to compensate for unbalanced nonlinear loads and dissimilar line currents. The proposed control method uses both dq-theory and instantaneous p-q power theory to calculate reference currents. Fuzzy logic control is also used to optimize the SAPF performance. Simulation results show the controller is effective at mitigating harmonic distortion, compensating load asymmetry, and eliminating negative and zero sequence currents. The total harmonic distortion of the line currents is reduced from 29.8% to 4.1% with this control approach.
Dynamic Power Factor Correction in a Non Linear Environmentiosrjce
Electric power quality mainly refers to maintaining a near sinusoidal power distribution bus voltage
at rated magnitude and frequency. In modern electric power supply distribution systems, there is a sharp rise in
use of both single phase and three-phase non-linear loads and due to these non-linear loads, non-sinusoidal
unbalanced current is drawn from ac mains resulting in harmonic injection, burden of reactive power, more
neutral currents and unbalanced loading of ac mains. In this paper the simulation of ideal shunt active power
filter is carried out to eliminate harmonics and also improving the power factor for three-phase, three-wire
system. In addition to this, simulation of shunt APF for three-phase, three-wire distribution system using time
domain p-q theory has been carried out to eliminate harmonics. Also an attempt is made to find out various
power quality problems and among these problems most prominent and frequently occurring problem
harmonics is analyzed and its causes, effects and mitigating or improving techniques are explained in detail. A
case study using ideal shunt AF and Shunt AF using p-q theory is also carried out in this paper.
Cascaded Multilevel Inverter Based Active Power Filters: A Survey of ControlsIOSR Journals
This document summarizes several control strategies for cascaded multilevel inverter based active power filters, including:
1. P-q theory with PI controller, which calculates real and reactive power to generate reference currents but has errors when voltages are distorted.
2. Average power method with carrier phase shifted PWM, which gives accurate results even with distorted voltages by using a PLL and calculating average power.
3. Instantaneous real-power theory with triangular-sampling current modulator, which generates reference currents to compensate for harmonics and reactive power in real-time using simple calculations. It maintains the DC bus voltage and works for generic power systems.
Design of Shunt Active Power Filter to eliminate harmonics generated by CFLpaperpublications3
Abstract: The use of non-linear loads; such as TV sets and computer, microwave ovens, multiple low power diode rectifier, fluorescent lamps and electric drives, draw very distorted currents. These non-linear loads lead to generation of current/voltage harmonics and draw reactive power. This paper presents the three-phase shunt active power filter (SAPF) to compensate harmonics generated by non-linear load (compact fluorescent lamp). The instantaneous active and reactive power theory (called p-q theory) is used to design the control of SAPF. The harmonic distortion and the active filter control scheme have been verified by MATLAB simulation.
Power Quality Improvement Fuzzy Logical Controlled Based on Cascaded Shunt Ac...IJMTST Journal
Improve its quality and reliability catches growing interest. In this paper, based on the analysis and
modeling of the shunt APF with close-loop control, a feed forward compensation path of load current and also
fuzzy logic control is applied to improve the dynamic performance of the APF.. The two H-bridge cascaded
inverter is used for the aeronautical APF (AAPF). Justifications for topology choosing and corresponding
system control method are given. Furthermore, the global framework and operation principle of the proposed
AAPF are presented in detail. Simulated waveforms in different load conditions indicate the good
performance of the AAPF.
Hysteresis Current Control Based Shunt Active Power Filter for Six Pulse Ac/D...IJERA Editor
This document summarizes a research paper on a hysteresis current control based shunt active power filter for a six pulse AC/DC converter. It describes using p-q theory and a PI controller to calculate reference currents for the shunt active power filter to compensate harmonic currents drawn by a three phase six pulse AC/DC converter. Simulation results show the filter is effective at reducing total harmonic distortion at the source from over 23% to under 2.4% transiently and 1.1% steadily, meeting IEEE standards. The shunt active power filter configuration, hysteresis current control approach, and simulation results validating the compensation of harmonics are summarized.
International Journal of Engineering Research and Development (IJERD)IJERD Editor
We would send hard copy of Journal by speed post to the address of correspondence author after online publication of paper.
We will dispatched hard copy to the author within 7 days of date of publication
The document describes the design of a shunt hybrid active power filter (SHAPF) to reduce harmonics on the AC side due to non-linear loads. A SHAPF consists of both an active filter and a passive filter connected in parallel. The active filter uses an instantaneous reactive power theory-based control strategy to calculate compensating currents, while the passive filter includes a tuned RLC circuit to filter specific harmonics. Simulation results using MATLAB Simulink show the SHAPF reduces the total harmonic distortion of the source current from 30.35% to 3.25%, outperforming passive and active filters alone. The control strategy effectively reduces harmonics through feedback compensation provided by the hybrid filter configuration.
Engineering Research Publication
Best International Journals, High Impact Journals,
International Journal of Engineering & Technical Research
ISSN : 2321-0869 (O) 2454-4698 (P)
www.erpublication.org
This document discusses a proposed method for improving power quality using a distributed power flow controller (DPFC). The DPFC is similar in structure to a unified power flow controller but eliminates the common DC link between converters. It uses a single shunt converter and multiple independent series converters connected along the transmission line. The DPFC is able to control transmission line parameters like impedance, angle, and voltage. It can mitigate issues like voltage sags and current swells. Simulation results using Matlab/Simulink show the DPFC effectively improves power quality by reducing sags, swells, and harmonics when a three-phase fault is applied to the system.
Design of shunt active power filter to mitigate harmonicsager alswed
The designed three phase SAPF based on instantaneous p-q theory was simulated in MATLAB /SIMULINK by using different load conditions i.e. R-L load, suddenly connected R-L load, and additional unbalance R load. Its application was successfully proved and the validity achieved by minimizing the harmonics and improving PF as summarized in Table 2. Consequently, the supply current is almost pure sinusoidal. THD observed was fund to be within the prescribed limits of 5% as recommended by IEEE-519 standard.
A New Topology for Power Quality Improvement using 3-Phase 4-Wire UPQC with R...IJMTST Journal
This document discusses a new topology for a Unified Power Quality Conditioner (UPQC) with a reduced DC-link voltage rating. The UPQC uses a series inverter to perform simultaneous voltage sag/swell compensation and load reactive power sharing with a shunt inverter. The control approach integrates active power control for sag/swell compensation with power angle control to coordinate reactive power between the inverters. Simulation results using MATLAB/SIMULINK support the new UPQC concept. Finally, the proposed UPQC topology is validated through simulation.
International Journal of Computational Engineering Research(IJCER) is an intentional online Journal in English monthly publishing journal. This Journal publish original research work that contributes significantly to further the scientific knowledge in engineering and Technology.
In This paper we present experimental comparative study of feedBack Linearized and Proportional Integral (PI) Controller of the DC bus voltage of three phase shunt Active Power Filter (APF). The FeedBack Linearized and PI controllers are introduced to improve tracking performance characteristics, power quality and minimized consumption of the reactive power. The algorithm used to identify the reference currents is based on the Self Tuning Filter (STF). The firing pulses of the IGBTs inverter are generated using a hysteresis current controller; which is implemented on an analogue card. Finally, the above study, under steady state and transient conditions, is illustrated with signal-flow graphs and corresponding analysis. This study was verified by experimental tests on hardware prototype based on dSPACE-1104. The experimental results show the feasibility and the effectiveness of the designed active filter, associated with Feedback Linearized and PI controllers and are capability in meeting the IEEE 519-1992 recommended harmonic standard limits.
Improvement of the electric power quality usingVikram Rawani
A control algorithm for a three-phase hybrid power
filter is proposed.It is constituted by a series active filter and a passive filter connected in parallel with the load.
This document describes a predictive approach for power quality improvement using direct power control (Predictive-DPC) for a shunt active power filter (SAPF) system. The proposed Predictive-DPC control calculates the appropriate average voltage vector at each sampling period to cancel errors between the instantaneous active and reactive powers and their references, indirectly forcing the SAPF to generate the compensation current needed. Simulation results show the Predictive-DPC control achieves good steady state and transient performance with high harmonic elimination, regulating active power and maintaining zero reactive power under load variations. A comparative analysis found Predictive-DPC control offers improvements over conventional DPC control for SAPF systems.
The document describes the use of active power filters to improve power quality by compensating for harmonics and reactive power required by nonlinear loads. It discusses shunt active power filters, which compensate for harmonic currents, and series active power filters, which compensate for voltage harmonics. The key points are:
1) Shunt active power filters inject harmonic currents to cancel out load current harmonics and maintain the DC link voltage. Series active power filters inject a compensating voltage to cancel out supply voltage harmonics.
2) Reference compensation currents/voltages are estimated using techniques like Fast Fourier Transform and p-q theory.
3) Unified Power Quality Conditioners (UPQC) consist of back-to-
This document presents a simulation study of a hysteresis current controlled series active power filter to improve power quality by compensating for harmonics and reactive power from a non-linear load. The series active filter uses a simple method to calculate the reference compensation voltage based on p-q theory. Simulation results show the active filter maintains total harmonic distortion well within IEEE standards, effectively mitigating harmonic distortion, compensating reactive power, and improving the power factor.
This paper presents the control for Shunt Active Power (SAPF) filter in photovoltaic (PV) systems connected to the grid. The proposed configuration of the system consists of a photovoltaic array that connected to the grid through the three-phase inverter topology that also serves as an active filter. Photovoltaic is coupled in parallel with the direct curret (DC) side of the active filter. With this configuration, can be obtained three advantages, namely the elimination of harmonic currents caused by nonlinear load, reactive power injection, and injection of active power generated photovoltaic. The p-q Theory is used to calculate the harmonic reference current to be used to control the active filter coupled fotovoltaic in generating anti-harmonic currents. The results show that system can reduce harmonic distortion from THD 27.22% to be THD 1.05%, whereas when the active power from photovoltaic injected, the THD become 2.01%. Power sharing can also be seen from this study.
Closed Loop Non Linear Control of Shunt Hybrid Power Filter for Harmonics Mit...IAES-IJPEDS
In recent years, the amount of non-linear loads has increased considerably since there were improvements in power electronic equipment (such as adjustable speed drives or converter ac-dc, ac-ac, dc-ac and dc-dc) in industrial sectors which cause deterioration of the quality of the electric power supply through distortion of supply voltage and supply current. This has led to improvement of many stringent needs regarding generation of harmonic current, which are found in IEEE519 and IEC61000 standards. This paper proposes a non-linear function based closed loop control strategy (without load current extraction) for three-phase Shunt Active Power Line Conditioner and LC passive filter to compensate harmonics, power factor improvement and enhance the dynamic performance of Shunt Hybrid Power Filter (SHPF). By using a PI controller the DC bus voltage of the Shunt Active Power Filter is maintained constant. Results obtained from simulation shows the performance of expected hybrid filter in transient and steady state operation . This indicates that the controller is able to compensate even under severe load current imbalances.
Comparative Analysis of Power Quality Enhancement of Distribution System usin...IRJET Journal
This document presents a comparative analysis of using a Unified Power Quality Conditioner (UPQC) to improve power quality in a 16-bus distribution system. A UPQC combines series and shunt active power filters to mitigate both voltage and current-based power quality issues. The document describes the components and control strategies of a UPQC. It then models a UPQC connected to the 16-bus system and compares the performance of using different controller types for the UPQC: proportional-integral (PI) controller, neural network, and adaptive neuro-fuzzy inference system (ANFIS). The modeling results show the effectiveness of a UPQC in enhancing power quality by reducing issues like voltage sag, harmonics, and interruptions.
report of Improvement of the Electric Power Quality Using Series Active and S...Vikram Rawani
The increase of nonlinear loads due to the proliferation of electronic equipment causes power quality in the power system to deteriorate. Harmonic current drawn from a supply by the nonlinear load results in the distortion of the supply voltage waveform at the point of common coupling (PCC) due to the source impedance. Both distorted current and voltage may cause end-user equipment to malfunction, conductors to overheat and may reduce the efficiency and life expectancy of the equipment connected at the PCC.
Implementation of Instantaneous Reactive Power Theory for Current Harmonic Re...IOSR Journals
This document discusses implementing the instantaneous reactive power theory (IRP theory) for current harmonic reduction and reactive power compensation in a three phase four wire power system. The IRP theory defines instantaneous power components in the α-β-0 coordinate system. It can calculate the reference compensating currents required by a shunt active power filter to inject into the network. Simulations show the power filter can reduce current harmonics and reactive power, improving the power factor by making the source current sinusoidal and in phase with the voltage. The IRP theory provides a flexible way to select the undesirable power components for compensation to minimize pollution from nonlinear loads.
Dynamic Power Factor Correction in a Non Linear Environmentiosrjce
Electric power quality mainly refers to maintaining a near sinusoidal power distribution bus voltage
at rated magnitude and frequency. In modern electric power supply distribution systems, there is a sharp rise in
use of both single phase and three-phase non-linear loads and due to these non-linear loads, non-sinusoidal
unbalanced current is drawn from ac mains resulting in harmonic injection, burden of reactive power, more
neutral currents and unbalanced loading of ac mains. In this paper the simulation of ideal shunt active power
filter is carried out to eliminate harmonics and also improving the power factor for three-phase, three-wire
system. In addition to this, simulation of shunt APF for three-phase, three-wire distribution system using time
domain p-q theory has been carried out to eliminate harmonics. Also an attempt is made to find out various
power quality problems and among these problems most prominent and frequently occurring problem
harmonics is analyzed and its causes, effects and mitigating or improving techniques are explained in detail. A
case study using ideal shunt AF and Shunt AF using p-q theory is also carried out in this paper.
Cascaded Multilevel Inverter Based Active Power Filters: A Survey of ControlsIOSR Journals
This document summarizes several control strategies for cascaded multilevel inverter based active power filters, including:
1. P-q theory with PI controller, which calculates real and reactive power to generate reference currents but has errors when voltages are distorted.
2. Average power method with carrier phase shifted PWM, which gives accurate results even with distorted voltages by using a PLL and calculating average power.
3. Instantaneous real-power theory with triangular-sampling current modulator, which generates reference currents to compensate for harmonics and reactive power in real-time using simple calculations. It maintains the DC bus voltage and works for generic power systems.
Design of Shunt Active Power Filter to eliminate harmonics generated by CFLpaperpublications3
Abstract: The use of non-linear loads; such as TV sets and computer, microwave ovens, multiple low power diode rectifier, fluorescent lamps and electric drives, draw very distorted currents. These non-linear loads lead to generation of current/voltage harmonics and draw reactive power. This paper presents the three-phase shunt active power filter (SAPF) to compensate harmonics generated by non-linear load (compact fluorescent lamp). The instantaneous active and reactive power theory (called p-q theory) is used to design the control of SAPF. The harmonic distortion and the active filter control scheme have been verified by MATLAB simulation.
Power Quality Improvement Fuzzy Logical Controlled Based on Cascaded Shunt Ac...IJMTST Journal
Improve its quality and reliability catches growing interest. In this paper, based on the analysis and
modeling of the shunt APF with close-loop control, a feed forward compensation path of load current and also
fuzzy logic control is applied to improve the dynamic performance of the APF.. The two H-bridge cascaded
inverter is used for the aeronautical APF (AAPF). Justifications for topology choosing and corresponding
system control method are given. Furthermore, the global framework and operation principle of the proposed
AAPF are presented in detail. Simulated waveforms in different load conditions indicate the good
performance of the AAPF.
Hysteresis Current Control Based Shunt Active Power Filter for Six Pulse Ac/D...IJERA Editor
This document summarizes a research paper on a hysteresis current control based shunt active power filter for a six pulse AC/DC converter. It describes using p-q theory and a PI controller to calculate reference currents for the shunt active power filter to compensate harmonic currents drawn by a three phase six pulse AC/DC converter. Simulation results show the filter is effective at reducing total harmonic distortion at the source from over 23% to under 2.4% transiently and 1.1% steadily, meeting IEEE standards. The shunt active power filter configuration, hysteresis current control approach, and simulation results validating the compensation of harmonics are summarized.
International Journal of Engineering Research and Development (IJERD)IJERD Editor
We would send hard copy of Journal by speed post to the address of correspondence author after online publication of paper.
We will dispatched hard copy to the author within 7 days of date of publication
The document describes the design of a shunt hybrid active power filter (SHAPF) to reduce harmonics on the AC side due to non-linear loads. A SHAPF consists of both an active filter and a passive filter connected in parallel. The active filter uses an instantaneous reactive power theory-based control strategy to calculate compensating currents, while the passive filter includes a tuned RLC circuit to filter specific harmonics. Simulation results using MATLAB Simulink show the SHAPF reduces the total harmonic distortion of the source current from 30.35% to 3.25%, outperforming passive and active filters alone. The control strategy effectively reduces harmonics through feedback compensation provided by the hybrid filter configuration.
Engineering Research Publication
Best International Journals, High Impact Journals,
International Journal of Engineering & Technical Research
ISSN : 2321-0869 (O) 2454-4698 (P)
www.erpublication.org
This document discusses a proposed method for improving power quality using a distributed power flow controller (DPFC). The DPFC is similar in structure to a unified power flow controller but eliminates the common DC link between converters. It uses a single shunt converter and multiple independent series converters connected along the transmission line. The DPFC is able to control transmission line parameters like impedance, angle, and voltage. It can mitigate issues like voltage sags and current swells. Simulation results using Matlab/Simulink show the DPFC effectively improves power quality by reducing sags, swells, and harmonics when a three-phase fault is applied to the system.
Design of shunt active power filter to mitigate harmonicsager alswed
The designed three phase SAPF based on instantaneous p-q theory was simulated in MATLAB /SIMULINK by using different load conditions i.e. R-L load, suddenly connected R-L load, and additional unbalance R load. Its application was successfully proved and the validity achieved by minimizing the harmonics and improving PF as summarized in Table 2. Consequently, the supply current is almost pure sinusoidal. THD observed was fund to be within the prescribed limits of 5% as recommended by IEEE-519 standard.
A New Topology for Power Quality Improvement using 3-Phase 4-Wire UPQC with R...IJMTST Journal
This document discusses a new topology for a Unified Power Quality Conditioner (UPQC) with a reduced DC-link voltage rating. The UPQC uses a series inverter to perform simultaneous voltage sag/swell compensation and load reactive power sharing with a shunt inverter. The control approach integrates active power control for sag/swell compensation with power angle control to coordinate reactive power between the inverters. Simulation results using MATLAB/SIMULINK support the new UPQC concept. Finally, the proposed UPQC topology is validated through simulation.
International Journal of Computational Engineering Research(IJCER) is an intentional online Journal in English monthly publishing journal. This Journal publish original research work that contributes significantly to further the scientific knowledge in engineering and Technology.
In This paper we present experimental comparative study of feedBack Linearized and Proportional Integral (PI) Controller of the DC bus voltage of three phase shunt Active Power Filter (APF). The FeedBack Linearized and PI controllers are introduced to improve tracking performance characteristics, power quality and minimized consumption of the reactive power. The algorithm used to identify the reference currents is based on the Self Tuning Filter (STF). The firing pulses of the IGBTs inverter are generated using a hysteresis current controller; which is implemented on an analogue card. Finally, the above study, under steady state and transient conditions, is illustrated with signal-flow graphs and corresponding analysis. This study was verified by experimental tests on hardware prototype based on dSPACE-1104. The experimental results show the feasibility and the effectiveness of the designed active filter, associated with Feedback Linearized and PI controllers and are capability in meeting the IEEE 519-1992 recommended harmonic standard limits.
Improvement of the electric power quality usingVikram Rawani
A control algorithm for a three-phase hybrid power
filter is proposed.It is constituted by a series active filter and a passive filter connected in parallel with the load.
This document describes a predictive approach for power quality improvement using direct power control (Predictive-DPC) for a shunt active power filter (SAPF) system. The proposed Predictive-DPC control calculates the appropriate average voltage vector at each sampling period to cancel errors between the instantaneous active and reactive powers and their references, indirectly forcing the SAPF to generate the compensation current needed. Simulation results show the Predictive-DPC control achieves good steady state and transient performance with high harmonic elimination, regulating active power and maintaining zero reactive power under load variations. A comparative analysis found Predictive-DPC control offers improvements over conventional DPC control for SAPF systems.
The document describes the use of active power filters to improve power quality by compensating for harmonics and reactive power required by nonlinear loads. It discusses shunt active power filters, which compensate for harmonic currents, and series active power filters, which compensate for voltage harmonics. The key points are:
1) Shunt active power filters inject harmonic currents to cancel out load current harmonics and maintain the DC link voltage. Series active power filters inject a compensating voltage to cancel out supply voltage harmonics.
2) Reference compensation currents/voltages are estimated using techniques like Fast Fourier Transform and p-q theory.
3) Unified Power Quality Conditioners (UPQC) consist of back-to-
This document presents a simulation study of a hysteresis current controlled series active power filter to improve power quality by compensating for harmonics and reactive power from a non-linear load. The series active filter uses a simple method to calculate the reference compensation voltage based on p-q theory. Simulation results show the active filter maintains total harmonic distortion well within IEEE standards, effectively mitigating harmonic distortion, compensating reactive power, and improving the power factor.
This paper presents the control for Shunt Active Power (SAPF) filter in photovoltaic (PV) systems connected to the grid. The proposed configuration of the system consists of a photovoltaic array that connected to the grid through the three-phase inverter topology that also serves as an active filter. Photovoltaic is coupled in parallel with the direct curret (DC) side of the active filter. With this configuration, can be obtained three advantages, namely the elimination of harmonic currents caused by nonlinear load, reactive power injection, and injection of active power generated photovoltaic. The p-q Theory is used to calculate the harmonic reference current to be used to control the active filter coupled fotovoltaic in generating anti-harmonic currents. The results show that system can reduce harmonic distortion from THD 27.22% to be THD 1.05%, whereas when the active power from photovoltaic injected, the THD become 2.01%. Power sharing can also be seen from this study.
Closed Loop Non Linear Control of Shunt Hybrid Power Filter for Harmonics Mit...IAES-IJPEDS
In recent years, the amount of non-linear loads has increased considerably since there were improvements in power electronic equipment (such as adjustable speed drives or converter ac-dc, ac-ac, dc-ac and dc-dc) in industrial sectors which cause deterioration of the quality of the electric power supply through distortion of supply voltage and supply current. This has led to improvement of many stringent needs regarding generation of harmonic current, which are found in IEEE519 and IEC61000 standards. This paper proposes a non-linear function based closed loop control strategy (without load current extraction) for three-phase Shunt Active Power Line Conditioner and LC passive filter to compensate harmonics, power factor improvement and enhance the dynamic performance of Shunt Hybrid Power Filter (SHPF). By using a PI controller the DC bus voltage of the Shunt Active Power Filter is maintained constant. Results obtained from simulation shows the performance of expected hybrid filter in transient and steady state operation . This indicates that the controller is able to compensate even under severe load current imbalances.
Comparative Analysis of Power Quality Enhancement of Distribution System usin...IRJET Journal
This document presents a comparative analysis of using a Unified Power Quality Conditioner (UPQC) to improve power quality in a 16-bus distribution system. A UPQC combines series and shunt active power filters to mitigate both voltage and current-based power quality issues. The document describes the components and control strategies of a UPQC. It then models a UPQC connected to the 16-bus system and compares the performance of using different controller types for the UPQC: proportional-integral (PI) controller, neural network, and adaptive neuro-fuzzy inference system (ANFIS). The modeling results show the effectiveness of a UPQC in enhancing power quality by reducing issues like voltage sag, harmonics, and interruptions.
report of Improvement of the Electric Power Quality Using Series Active and S...Vikram Rawani
The increase of nonlinear loads due to the proliferation of electronic equipment causes power quality in the power system to deteriorate. Harmonic current drawn from a supply by the nonlinear load results in the distortion of the supply voltage waveform at the point of common coupling (PCC) due to the source impedance. Both distorted current and voltage may cause end-user equipment to malfunction, conductors to overheat and may reduce the efficiency and life expectancy of the equipment connected at the PCC.
Implementation of Instantaneous Reactive Power Theory for Current Harmonic Re...IOSR Journals
This document discusses implementing the instantaneous reactive power theory (IRP theory) for current harmonic reduction and reactive power compensation in a three phase four wire power system. The IRP theory defines instantaneous power components in the α-β-0 coordinate system. It can calculate the reference compensating currents required by a shunt active power filter to inject into the network. Simulations show the power filter can reduce current harmonics and reactive power, improving the power factor by making the source current sinusoidal and in phase with the voltage. The IRP theory provides a flexible way to select the undesirable power components for compensation to minimize pollution from nonlinear loads.
This document discusses the implementation of instantaneous reactive power theory (IRP theory) for current harmonic reduction and reactive power compensation in three phase four wire power systems. IRP theory is used to calculate reference compensating currents that are injected by a shunt active power filter (SAPF) to compensate for non-linear and reactive loads. Clarke's transformation is used to convert voltages and currents to the α-β-0 reference frame for IRP calculations. Hysteresis current control with a constant switching frequency is used to generate PWM signals to control the SAPF inverter. Simulations show the SAPF reducing current harmonics and reactive power, improving the power factor by making the source current sinusoidal and in phase with
Power quality improvement of distribution systems asymmetry caused by power d...nooriasukmaningtyas
With an increase of non-linear load in today’s electrical power systems, the rate of power quality drops and the voltage source and frequency deteriorate if not properly compensated with an appropriate device. Filters are most common techniques that employed to overcome this problem and improving power quality. In this paper an improved optimization technique of filter applies to the power system is based on a particle swarm optimization with using artificial neural network technique applied to the unified power flow quality conditioner (PSO-ANN UPQC). Design particle swarm optimization and artificial neural network together result in a very high performance of flexible AC transmission lines (FACTs) controller and it implements to the system to compensate all types of power quality disturbances. This technique is very powerful for minimization of total harmonic distortion of source voltages and currents as a limit permitted by IEEE-519. The work creates a power system model in MATLAB/Simulink program to investigate our proposed optimization technique for improving control circuit of filters. The work also has measured all power quality disturbances of the electrical arc furnace of steel factory and suggests this technique of filter to improve the power quality.
Decomposition of current through active power filter for compensating harmoni...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
This document describes a control scheme for a Unified Power Quality Conditioner (UPQC) to improve power quality. The UPQC integrates series and shunt active filters connected back-to-back via a common DC link capacitor. It compensates for power quality issues like sags, swells, harmonics, reactive power, and imbalance. The control scheme uses hysteresis control for the shunt active filter to regulate the DC link voltage and compensate for load harmonics and reactive power. For the series active filter, the control scheme determines the appropriate voltage to inject to make the load voltages balanced and distortion-free while maintaining the desired magnitude. Simulation results demonstrate the effectiveness of the proposed control strategy.
The document describes the use of active power filters to improve power quality by compensating for harmonics and reactive power required by nonlinear loads. It discusses shunt active power filters, which compensate for harmonic currents, and series active power filters, which compensate for voltage harmonics. The key points are:
1) Shunt active power filters inject harmonic currents to cancel out load current harmonics and maintain the DC link voltage. Series active power filters inject a compensating voltage to cancel out supply voltage harmonics.
2) Reference compensation currents/voltages are estimated using techniques like Fast Fourier Transform and p-q theory.
3) Unified Power Quality Conditioners (UPQC) consist of back-to-
A Power Control Scheme for UPQC for Power Quality Improvementpaperpublications3
Abstract: The proliferation of power electronics based equipmenthas produced a significant impact on the quality of electric power supply. Conventional power quality mitigation equipment is proving to be inadequate for an increasing number of applications, and this fact has attracted the attention of power engineers to develop dynamic and adjustable solutions to power quality problems. This has led to development of Custom Power Devices (CPD).One modern and very promising CPD that deals with both load current and supply voltage imperfections is the Unified Power Quality Conditioner (UPQC).
This paper investigated the development of UPQC control schemes and algorithms for power quality improvement and implementation of a versatile control strategy to enhance the performance of UPQC. The proposed control scheme gives better steady-state and dynamic response. The validity of the proposed control method is verified by means of MATLAB/SIMULINK.
Performance Improvement of the Radial Distribution System by using Switched C...idescitation
Distribution system is the major link which provides supply to the consumers
from the high voltage transmission system. The load on the distribution system is not
constant and it changes with respect to time throughout the working period. The voltage
drop and power losses occur in the distribution system mainly depends on the nature of the
load which is applied on the system. The voltage drop and power losses frequently occurs
mainly on those systems which are supplying load to the industrial areas, this is mainly
because of the existence of more reactive power. To overcome these problems shunt
compensation is employed to reduce or suppress those effects to an extent. The main aim of
this paper is to determine the specific value of the shunt capacitance required to achieve the
permissible voltage tolerance limits and maximum percentage of power loss reduction in a
sample two feeder radial distribution system.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Analysis and mitigation of unbalance due to load in distribution system by us...eSAT Journals
Abstract Distribution network losses can vary significantly depending on the load unbalance. Here, an analysis of distribution system losses is presented that considers load unbalance and the effect of explicitly represented neutral wire. A general power flow algorithm for three-phase four-wire radial distribution networks, based on the current summation backward-forward technique is applied. Loss analysis results obtained from three-phase four-wire medium and low voltage test feeders with unbalanced load scenarios are presented and discussed an active power filter is designed, simulated, implemented, and tested. It can work in different modes: active power filtering, power factor correction, and load unbalance compensation. It is based on a current controlled voltage-source inverter with fixed carrier PWM. The control algorithm generates the source reference currents based on the controlled DC link voltage. The dimensioning criteria of the inductive and capacitive power components are discussed. The implementation is validated with simulated and experimental results obtained in a 5 kVA prototype. Keywords: distribution networks, losses, load unbalance, power flow
Enhancement for Power Quality in Distribution Side Using Custom Power DevicesIOSR Journals
1) The document discusses enhancing power quality in distribution systems using custom power devices like the Interline Unified Power Quality Conditioner (IUPQC).
2) It proposes using a Synchronous Reference Frame (SRF) control algorithm with a modified Phase Locked Loop (PLL) for generating gate signals to improve the IUPQC's performance under distorted voltage conditions.
3) The SRF method transforms voltage and current signals into rotating dq coordinates to extract fundamental frequency components, while the modified PLL improves determination of positive sequence system voltages for better filtering.
Modeling & Analysis of Shunt Active Power Filter Using IRP Theory Fed to Indu...IJERA Editor
Utility distribution networks have sensitive industrial loads and critical commercial operations suffer from various types of outages and service interruptions which can cost significant financial losses. Because of sensitivity of consumers on power quality and advancement in power electronics. Active power filter technology is the most efficient way to compensate reactive power and cancel out low order harmonics generated by nonlinear loads. The shunt active power filter was considered to be the most basic configuration for the APF. This paper reviews the basic principle of shunt active power filter, along with the current tracking circuit based on the instantaneous reactive power theory and the main circuit performing as an inverter with PWM hysteresis control. The instantaneous active and reactive current component (id-iq) method and instantaneous active and reactive power (p-q) method are two control strategies which are extensively used in active filters. A shunt active filter based on the instantaneous active and reactive current component (id-iq) method is proposed. This method aims to compensate harmonic and first harmonic unbalance. A Comprehensive control method is analyzed and a harmonic Compensation simulation is conducted, the result of which verifies The harmonic detection algorithm is well-proposed and the power Quality of the grid is overall-enhanced. The results are obtained using MATLAB/SIMULINK software.
The document discusses a Unified Power Quality Conditioner (UPQC) which is a custom power device that can mitigate both voltage-related and current-related power quality issues simultaneously. It consists of shunt and series active power filters connected back-to-back via a DC link. The shunt filter compensates current issues like harmonics, while the series filter compensates voltage issues like sags and swells. Synchronous reference frame theory is used to control the converters. Simulation results show the UPQC can effectively compensate voltage sags/swells and current harmonics under nonlinear and unbalanced load conditions. The UPQC provides a versatile solution to power quality problems in distribution systems.
POWER STABILITY ANALYSIS OF A TRANSMISSION SYSTEM WITH A UNIFIED POWER FLOW C...IJITE
The unified power quality conditioner is the equipment used for regulated voltage distortion and voltage
unbalance in a power system. UPFC can enhance the power to flow through the transmission system by
controlling the power flow and voltage stability of the transmission line within their limits. This paper
presents a control scheme and Theoretical derivation of the unified power flow conditioner and the
simulation results are compared and contrasted in detail. UPFC is a combination of shunt Active and
series active power filters. UPFC contains a DC link capacitor in a single-phase voltage source inverter
with two back to back connected, three-phase three-wire and three-phase four-wire are arranged. The
fundamental target of this work is to determine the causes and impacts of power quality problems,
specifically voltage sag, voltage swell, power factor, and Total Harmonics Distortion (THD) and enhance
the power quality of a transmission system by UPFC based Transformative Intrinsic Algorithm (TIA). The
Simulation of the proposed method is developed by Mat lab Simulink software, and the simulation result
shows, the proposed method gives better solutions to control the power imbalance in the distribution
system with its cost-effectiveness.
Similar to Simulation and Performance Investigation of Unified Power Quality Conditioner Using Hysteresis Current Control Method (20)
This document summarizes several FACTS (Flexible AC Transmission Systems) devices that can be installed in power systems to better control power flows. It discusses both shunt and series FACTS controllers, including the Static VAR Compensator (SVC), Thyristor Controlled Series Capacitor (TCSC), Thyristor Controlled Phase Angle Regulator (TCPAR), Static Synchronous Compensator (STATCOM), Static Synchronous Series Compensator (SSSC), Unified Power Flow Controller (UPFC), Interline Power Flow Controller (IPFC) and others. It provides an overview of how these devices work and their benefits, such as increasing transmission capacity, improving stability, and allowing for more optimal
This document describes a simulation study of a PI-controlled three-phase shunt active power filter using hysteresis current control. Shunt active power filters can compensate for harmonics and reactive power required by non-linear loads. The filter employs fast Fourier transform to calculate the reference compensation current. Hysteresis current control is used to inject the compensation current into the line. Simulation results show the filter is able to mitigate harmonic distortion, reactive power compensation, and improve power factor, while maintaining total harmonic distortion within IEEE standards.
This document discusses reactive power compensation techniques using FACTS (Flexible AC Transmission System) devices. It provides an overview of reactive power and why compensation is needed to regulate voltages and improve stability. Several FACTS devices for reactive power compensation are described, including STATCOM, SVC, TCSC, and UPFC. The document compares these devices based on their ability to control load flow, voltage, and stability. UPFC is found to be most effective for higher load flow control and voltage regulation, while STATCOM is suitable for smaller distribution systems. Reactive power compensation using FACTS devices can enhance power transfer capability and stability.
This document summarizes research on approaches to managing congestion in deregulated electricity markets. It reviews various congestion management methods that have been proposed, including nodal pricing, price area congestion management, available transfer capability based approaches, using thyristor controlled phase shifting transformers, and flexible AC transmission systems devices. It also discusses optimization techniques that have been applied to congestion management problems, such as genetic algorithms and particle swarm optimization. The document provides examples of research on applying these different congestion management methods and optimization techniques to address transmission network congestion issues in deregulated power systems.
The document summarizes research on using a static synchronous compensator (STATCOM) to mitigate voltage flickers caused by wind speed variations in a wind farm. It describes a simulation of a 60MW wind farm connected to the grid through a transformer and transmission line. Simulation results show that without a STATCOM, wind speed variations from 5-13 m/s cause the voltage to vary from 91-103% of the base value. The addition of a 30MVar STATCOM controlled using PI control significantly reduces the voltage variations to 0.99-1.005 pu, improving power quality. The STATCOM supplies or absorbs reactive power according to the voltage level to regulate it.
This document provides an overview of smart management of electric power grids. It discusses how smart grids use two-way communication between utilities and users to create an automated and distributed energy network. Key components of smart grids include smart meters that monitor energy usage in intervals and can remotely control appliances, information transfer networks to share data, and distributed generation from sources like solar panels. The document outlines benefits like improved reliability, efficiency, and ability to incorporate renewable energy through advanced monitoring and control enabled by smart grid technologies.
1) The document discusses various power quality problems faced in power systems such as voltage sags, interruptions, flicker, surges, spikes, and harmonics.
2) It describes different types of active power filters that can be used to solve power quality issues, including shunt active filters that inject compensating current, and series active filters that inject compensating voltage.
3) The unified power quality conditioner is introduced, which uses both series and shunt active filters to improve both voltage and current quality by controlling series injected voltage and shunt injected current.
This document presents a study on using a fuzzy logic controlled D-STATCOM (distributed static compensator) to improve power quality in a power distribution system. A D-STATCOM equipped with an LCL passive filter is modeled and connected in parallel to an 11kV distribution system. Fuzzy logic control is implemented to regulate the D-STATCOM's reactive power injection and compensate for voltage sags and total harmonic distortion. Simulation results show the D-STATCOM improves the voltage profile under different fault conditions and reduces current THD from 43.43% to 0.73% when the LCL filter is used. The paper concludes the D-STATCOM effectively mitigates voltage sags and enhances power quality in the distribution
This document provides a review of forecasting methodologies used in restructured electricity markets. It discusses various time series forecasting models including AR, MA, ARMA, ARIMA, and neural network models. It also describes hybrid models that combine different techniques, such as weighted nearest neighbor (WNN) and fuzzy neural network (FNN) models. The goal of the document is to analyze different forecasting methods that can be used in deregulated power systems with competition in wholesale and retail electricity markets.
Comparative analysis between traditional aquaponics and reconstructed aquapon...bijceesjournal
The aquaponic system of planting is a method that does not require soil usage. It is a method that only needs water, fish, lava rocks (a substitute for soil), and plants. Aquaponic systems are sustainable and environmentally friendly. Its use not only helps to plant in small spaces but also helps reduce artificial chemical use and minimizes excess water use, as aquaponics consumes 90% less water than soil-based gardening. The study applied a descriptive and experimental design to assess and compare conventional and reconstructed aquaponic methods for reproducing tomatoes. The researchers created an observation checklist to determine the significant factors of the study. The study aims to determine the significant difference between traditional aquaponics and reconstructed aquaponics systems propagating tomatoes in terms of height, weight, girth, and number of fruits. The reconstructed aquaponics system’s higher growth yield results in a much more nourished crop than the traditional aquaponics system. It is superior in its number of fruits, height, weight, and girth measurement. Moreover, the reconstructed aquaponics system is proven to eliminate all the hindrances present in the traditional aquaponics system, which are overcrowding of fish, algae growth, pest problems, contaminated water, and dead fish.
Batteries -Introduction – Types of Batteries – discharging and charging of battery - characteristics of battery –battery rating- various tests on battery- – Primary battery: silver button cell- Secondary battery :Ni-Cd battery-modern battery: lithium ion battery-maintenance of batteries-choices of batteries for electric vehicle applications.
Fuel Cells: Introduction- importance and classification of fuel cells - description, principle, components, applications of fuel cells: H2-O2 fuel cell, alkaline fuel cell, molten carbonate fuel cell and direct methanol fuel cells.
A SYSTEMATIC RISK ASSESSMENT APPROACH FOR SECURING THE SMART IRRIGATION SYSTEMSIJNSA Journal
The smart irrigation system represents an innovative approach to optimize water usage in agricultural and landscaping practices. The integration of cutting-edge technologies, including sensors, actuators, and data analysis, empowers this system to provide accurate monitoring and control of irrigation processes by leveraging real-time environmental conditions. The main objective of a smart irrigation system is to optimize water efficiency, minimize expenses, and foster the adoption of sustainable water management methods. This paper conducts a systematic risk assessment by exploring the key components/assets and their functionalities in the smart irrigation system. The crucial role of sensors in gathering data on soil moisture, weather patterns, and plant well-being is emphasized in this system. These sensors enable intelligent decision-making in irrigation scheduling and water distribution, leading to enhanced water efficiency and sustainable water management practices. Actuators enable automated control of irrigation devices, ensuring precise and targeted water delivery to plants. Additionally, the paper addresses the potential threat and vulnerabilities associated with smart irrigation systems. It discusses limitations of the system, such as power constraints and computational capabilities, and calculates the potential security risks. The paper suggests possible risk treatment methods for effective secure system operation. In conclusion, the paper emphasizes the significant benefits of implementing smart irrigation systems, including improved water conservation, increased crop yield, and reduced environmental impact. Additionally, based on the security analysis conducted, the paper recommends the implementation of countermeasures and security approaches to address vulnerabilities and ensure the integrity and reliability of the system. By incorporating these measures, smart irrigation technology can revolutionize water management practices in agriculture, promoting sustainability, resource efficiency, and safeguarding against potential security threats.
A review on techniques and modelling methodologies used for checking electrom...nooriasukmaningtyas
The proper function of the integrated circuit (IC) in an inhibiting electromagnetic environment has always been a serious concern throughout the decades of revolution in the world of electronics, from disjunct devices to today’s integrated circuit technology, where billions of transistors are combined on a single chip. The automotive industry and smart vehicles in particular, are confronting design issues such as being prone to electromagnetic interference (EMI). Electronic control devices calculate incorrect outputs because of EMI and sensors give misleading values which can prove fatal in case of automotives. In this paper, the authors have non exhaustively tried to review research work concerned with the investigation of EMI in ICs and prediction of this EMI using various modelling methodologies and measurement setups.
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...University of Maribor
Slides from talk presenting:
Aleš Zamuda: Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapter and Networking.
Presentation at IcETRAN 2024 session:
"Inter-Society Networking Panel GRSS/MTT-S/CIS
Panel Session: Promoting Connection and Cooperation"
IEEE Slovenia GRSS
IEEE Serbia and Montenegro MTT-S
IEEE Slovenia CIS
11TH INTERNATIONAL CONFERENCE ON ELECTRICAL, ELECTRONIC AND COMPUTING ENGINEERING
3-6 June 2024, Niš, Serbia
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