Application and stability analysis of a novel digital active emi filter used in a grid tied pv micro-inverter module
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This paper presents a novel digital active EMI filter technique implemented in a grid-tied photovoltaic microinverter to suppress common-mode electromagnetic interference. The stability of the microinverter system is analyzed using its overall transfer function. A digital controller is designed using direct quadrant reference frame control and compensation techniques. Experimental results from a 200W grid-connected microinverter validate that the proposed digital active EMI filter provides equivalent or better EMI suppression compared to a conventional passive filter, while maintaining system stability.
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Nexgen Technology Address:
Nexgen Technology
No :66,4th cross,Venkata nagar,
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Puducherry.
Email Id: mailtonexgentech@gmail.com.
www.nexgenproject.com
Mobile: 9791938249,9025656779
NEXGEN TECHNOLOGY as an efficient Software Training Center located at Pondicherry with IT Training on IEEE Projects in Android,IEEE IT B.Tech Student Projects, Android Projects Training with Placements Pondicherry, IEEE projects in pondicherry, final IEEE Projects in Pondicherry , MCA, BTech, BCA Projects in Pondicherry, Bulk IEEE PROJECTS IN Pondicherry.So far we have reached almost all engineering colleges located in Pondicherry and around 90km
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Ieee 2020 21 power electronics in pondicherry,Ieee 2020 21 power electronics
Nexgen Technology Address:
Nexgen Technology
No :66,4th cross,Venkata nagar,
Near SBI ATM,
Puducherry.
Email Id: mailtonexgentech@gmail.com.
www.nexgenproject.com
Mobile: 9791938249,9025656779
NEXGEN TECHNOLOGY as an efficient Software Training Center located at Pondicherry with IT Training on IEEE Projects in Android,IEEE IT B.Tech Student Projects, Android Projects Training with Placements Pondicherry, IEEE projects in pondicherry, final IEEE Projects in Pondicherry , MCA, BTech, BCA Projects in Pondicherry, Bulk IEEE PROJECTS IN Pondicherry.So far we have reached almost all engineering colleges located in Pondicherry and around 90km
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Fiber optic communication relies on optical power levels between transmitters and receivers. An optical power meter is used to measure power loss in cabling by interfacing with various fiber optic connectors and detecting optical power levels calibrated to wavelengths used. Proper testing procedure involves cleaning connectors, setting the meter to the light source wavelength and power scale, attaching the meter to test points, and reading the measured power level. Regular calibration and cleaning of equipment is needed to reduce measurement errors during optic power testing, which is one part of standardized fiber optic component testing procedures.
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Solar inverters convert the direct current (DC) electricity produced by solar panels to alternating current (AC) electricity that can be used in homes and exported to the grid. They maximize electricity production through maximum power point tracking and ensure safety by immediately disconnecting from the grid during power outages. Solar inverters come in different sizes to accommodate various solar panel array sizes and come as either string inverters linked to multiple panels or microinverters linked to individual panels.
Protection and control of Microgrid
In microgrid, if fault occurs or any other contingency happens, then the problems would be created which are related to power flow, also there are various protection schemes are used for minimize or eliminate these problems.
Voltage control is used for reactive power balance and P-f control is used for active power control.
Various protection schemes such as, over current protection, differential protection scheme, zoning of network in adaptive protection scheme are used in microgrid system .
08 supsi 2017_schweiger_v3
7th PVPMC Energy Rating and Module Performance Modeling Workshop, 30-31 March, 2017 in Lugano, Switzerland
A Dual Control Strategy for Power Sharing Improvement In Islanded Mode of AC ...
Parallel operation of inverter modules is the solution to increase the reliability, efficiency, and redundancy of inverters in microgrids. Load sharing among inverters in distributed generators (DGs) is a key issue. This study investigates the feasibility of power-sharing among parallel DGs using a dual control strategy in islanded mode of a microgrid. PQ control and droop control techniques are established to control the microgrid operation.
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Due to the still increasing penetration of grid connected Photovoltaic (PV) systems, advanced active power control functionalities have been introduced in grid regulations. A power reserve control, where namely the active power from the PV panels is reserved during operation, is required for grid support. In this paper, a cost-effective solution to realize the power reserve for two-stage grid-connected PV systems is proposed. The proposed solution routinely employs a Maximum Power Point Tracking (MPPT) control to estimate the available PV power and a Constant Power Generation (CPG) control to achieve the power reserve. In this method, the solar irradiance and temperature measurements that have been used in conventional power reserve control schemes to estimate the available PV power are not required, and thereby being a sensorless approach with reduced cost. Experimental tests have been performed on a 3-kW two-stage single-phase grid-connected PV system, where the power reserve control is achieved upon demands.
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DESIGN OF MATRIX CONVERTER BASED DYNAMIC VOLTAGE RESTORER FOR POWER QUALITY ...
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The reliability, efficiency, and controllability of Photo Voltaic power systems can be increased by embedding the components of a Boost Converter. Currently, the converter technology overcomes the main problems of manufacturing cost, efficiency and mass production. Issue to limit the life span of a Photo Voltaic inverter is the huge electrolytic capacitor across the Direct Current bus for energy decoupling. This paper presents a two-phase interleaved boost converter which ensures 180 angle phase shift between the two interleaved converters. The Proportional Integral controller is used to reshape that the controller attempts to minimize the error by adjusting the control inputs and also real coded genetic algorithm is proposed for tuning of controlling parameters of Proportional Integral controller. The real coded genetic algorithm is applied in the Interleaved Boost Converter with Advanced Pulse Width Modulation Techniques for improving the results of efficiency and reduction of ripple current. Simulation results illustrate the improvement of efficiency and the diminution of ripple current.
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This paper describes a control method for single phase grid-connected inverter system for distributed generation application. Single-band Hysteresis Current Controller is applied as the control method. The control algorithm is implemented in Digital Signal Processor (DSP) TMS320F2812. The control method provides robust current regulation and achieve unity power factor. Simulation and experimental results are provided to demonstrate the effectiveness of the design.
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This document discusses the impact of integrating solar and wind power on frequency control systems. It proposes using a microgrid that can efficiently utilize renewable energy sources while overcoming issues like intermittency. The microgrid would facilitate demand response and distributed generation integration at the distribution level. It presents an optimization model for microgrid scheduling in coordination with the distribution system to address peak load issues. Simulation results of a microgrid with wind, solar and loads demonstrate the effectiveness of the proposed coordination approach.
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This document provides a literature review of commonly used maximum power point tracking (MPPT) techniques for solar photovoltaic systems. It discusses four main MPPT algorithms: conventional perturb and observe, modified adaptive perturb and observe, incremental conductance, and modified incremental conductance. For each technique, the document explains the algorithm, methodology for achieving maximum power point, and flow charts. It evaluates the performance of the different MPPT methods under varying operating conditions and their suitability for industrial applications.
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The document discusses renewable energy sources like solar and wind power and issues related to integrating them into the electric grid. It focuses on photovoltaic (PV) systems and multilevel inverters that can convert the DC power from PV modules into AC power that can be fed into the grid. A five-level diode-clamped inverter topology is proposed for PV applications that reduces harmonic distortion and switching losses compared to traditional three-level inverters. A PID current control scheme and PWM modulation are used to generate sinusoidal current synchronized to the grid for unity power factor operation under varying solar irradiance conditions. Experimental results show lower total harmonic distortion compared to three-level inverters.
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Coloring based inter-wban scheduling for mobile wireless body area networks
This document describes a study on inter-WBAN scheduling for mobile wireless body area networks. The study proposes a random incomplete coloring algorithm with low time complexity and high spatial reuse to overcome interference between wireless body area networks. Simulation results show that the proposed coloring algorithm effectively overcomes inter-WBAN interference and supports higher system throughput in various mobile WBAN scenarios compared to conventional coloring methods.
Code modulation based encryption & decryption technique for secure communicat...
This document describes a code modulation based encryption and decryption technique for secure wireless communication. The system has a transmitter section and receiver section, each designed around a microcontroller. At the transmitter, data typed into a PC is encrypted using the microcontroller and transmitted via RF. At the receiver, the encrypted data is received, decoded by the microcontroller, and displayed on the PC. To view the actual data, a password must be entered which decrypts the cipher text into plaintext. The block diagram shows the transmitter components include an encoder, microcontroller, MAX232, and RF transmitter. The receiver components include a decoder, microcontroller, MAX232, and RF receiver.
Clustering sentence level text using a novel fuzzy relational clustering algo...
Ecway Technologies is a software development company with offices in multiple cities in Tamil Nadu, India. They can be contacted via phone or email.
The paper presents a novel fuzzy clustering algorithm that operates on relational input data in the form of a pairwise similarity matrix between objects. The algorithm uses a graph representation and models centrality as likelihood in an Expectation-Maximization framework. Results show the algorithm can identify overlapping clusters of semantically related sentences, demonstrating potential use in text mining tasks. It was also applied successfully to benchmark datasets in other domains.
Clustering large probabilistic graphs
This document summarizes a study on clustering probabilistic graphs. It proposes extending the edit-distance-based definition of graph clustering to probabilistic graphs. Practical approximation algorithms are developed based on establishing a connection between the objective function and correlation clustering. The parameter-free objective function means the number of clusters is part of the output. Methods are developed for testing statistical significance of clusters and handling noisy clusterings. Experiments on real protein-protein interaction and large-scale social networks demonstrate the techniques can discover correct numbers of clusters and identify known relationships.
Cloudsim t-drive enhancing driving directions with taxi drivers’ intelligence
This paper presents a smart driving direction system that leverages taxi drivers' intelligence and experience. GPS-equipped taxis act as mobile sensors to model the dynamic traffic patterns of a city. A time-dependent landmark graph models traffic patterns and experienced drivers' route choices to provide users with the practically fastest route to a destination at a given departure time. A clustering approach estimates travel times between landmarks in different time slots. A two-stage routing algorithm then computes a customized, practically fastest route for the user based on this graph and real-world trajectory data from over 33,000 taxis over three months. Evaluation found that 60-70% of routes suggested were faster than alternatives, with 20% sharing results, and on average routes
Cloudsim ranking on data manifold with sink points
ECWAY Technologies provides IEEE projects and software development services from its offices in multiple cities across India. The document discusses a novel ranking approach called Manifold Ranking with Sink Points (MRSP) that addresses diversity, relevance, and importance in ranking. MRSP uses manifold ranking over a data manifold to find the most relevant objects while turning already ranked objects into "sink points" to prevent redundant objects from receiving a high rank. Experimental results on update summarization and query recommendation tasks show MRSP performs strongly compared to existing ranking approaches by better addressing the importance of diversity in ranking.
Cloudsim quality-differentiated video multicast in multirate wireless networks
This document describes a quality-differentiated video multicast scheme for multirate wireless networks called QDM. QDM aims to provide heterogeneous clients with differentiated video qualities matching their channel conditions. It first proposes a rate scheduling model to select the optimal transmission bitrate for each video frame to maximize total visual quality subject to minimum quality guarantees. It then presents QDM, a practical protocol that constructs a cluster-based structure to characterize heterogeneity and adapts transmission rates based on video quality perceived by cluster heads. Simulation results show QDM can efficiently adapt to network dynamics and variable bitrates, producing a 2-5 dB gain in average video quality over leader-based approaches.
Cloudsim power allocation for statistical qo s provisioning in opportunistic...
The document proposes a power allocation scheme for statistical quality-of-service provisioning in multi-relay cognitive networks. The scheme first chooses between direct transmission or relay transmission based on channel state information. It then performs efficient power allocation according to the transmission mode and given constraints like quality-of-service requirements, average transmit power limits, and peak interference limits. Simulations show the proposed scheme outperforms max-min criterion and equal power allocation policies by achieving higher throughput while involving at most two relays for transmission.
Cloudsim distributed web systems performance forecasting using turning bands...
The document discusses using the Turning Bands method to forecast the performance of distributed web systems. Real-life data was obtained from an experiment monitoring a group of web servers worldwide using an agent system called MWING located in different parts of Poland. The results showed good quality in predicting web performance when European web servers were monitored from an agent in Gliwice, Poland using the Turning Bands method.
Cloudsim distributed processing of probabilistic top-k queries in wireless s...
This document summarizes a paper on distributed processing of probabilistic top-k queries in wireless sensor networks. It introduces the concepts of sufficient and necessary sets, which can facilitate localized data pruning in clusters. It then describes three algorithms - sufficient set-based, necessary set-based, and boundary-based - for intercluster query processing with bounded communication rounds. Finally, it presents an adaptive algorithm that dynamically switches between the three algorithms to minimize transmission cost, and experimental results showing the algorithms significantly reduce data transmission with small constant communication rounds, with the adaptive algorithm performing near-optimally under various conditions.
Civil 2013 titles
This document contains 15 titles for civil engineering projects related to structural analysis. The titles cover topics like analyzing beams, trusses, bridges, dams, and other structures under different loads and conditions using methods like finite element analysis. The analyses will determine factors like deflection, stresses, stability, and performance of the various civil structures.
Chopper based dc motor speed control
This document discusses using a chopper circuit to control the speed of a DC motor. A chopper circuit allows controlling the voltage to the motor by rapidly switching the voltage on and off, which enables remote speed control. This method improves motor efficiency by reducing current, lowers temperatures, shrinks motor size, and increases lifetime compared to previous variable resistor and transformer-based speed control methods. The project will use buttons to vary the firing angle of a MOSFET in the chopper circuit to control motor speed, with lower firing angles providing higher speeds.
Channel assignment for throughput optimization in multichannel multiradio wir...
ECWAY Technologies provides IEEE projects and software developments with offices in multiple cities in Tamil Nadu, India. They can be contacted via phone or email.
The document discusses a channel assignment algorithm for throughput optimization in multi-radio wireless mesh networks using network coding. It formulates the joint problem of random network coding, channel assignment, and broadcast link scheduling while taking into account opportunistic overhearing, interference constraints, coding constraints, number of channels, radios per node, and fairness between unicast connections. An auction-based suboptimal solution is developed for overall network throughput optimization. Performance evaluation shows the algorithm can effectively use multiple radios and channels while addressing fairness issues from the auction, with promising gains over traditional routing
Channel allocation and routing in hybrid multichannel multiradio wireless mes...
The document proposes a hybrid channel allocation and routing approach for multichannel multiradio wireless mesh networks. It presents an Adaptive Dynamic Channel Allocation (ADCA) protocol that considers both throughput and delay for channel assignment. It also proposes an Interference and Congestion Aware Routing (ICAR) protocol for hybrid networks with static and dynamic links that balances channel usage. Simulation results show ADCA reduces packet delay without degrading throughput, and the hybrid approach adapts better to changing traffic than static-only networks with lower overhead and delay than existing hybrid methods.
Casual stereoscopic photo authoring
Ecway Technologies provides software development and IEEE projects services from offices located in multiple cities across India. They can be contacted via phone or email on their website at www.ecwayprojects.com.
The paper presents a method for easy stereoscopic photo authoring using a regular monocular camera. It takes two input images or video frames and transforms them into a stereoscopic image pair for pleasant 3D viewing. This is done through a perceptual-plausible image rectification algorithm that warps the input pairs to meet stereoscopic geometric constraints while avoiding visual distortion. The warping uses spatially-varying mesh-based warps that encode various constraints to best meet the stereoscopic geometry and minimize distortion. Experiments show the
Casual stereoscopic photo authoring
Ecway Technologies provides IEEE projects, software developments, and casual stereoscopic photo authoring. It has offices in multiple cities across India. Ecway's casual stereoscopic photo authoring method takes two images or video frames from a regular monocular camera as input and transforms them into a stereoscopic image pair for 3D viewing. The method uses a perceptual-plausible image rectification algorithm that warps the input pairs to meet stereoscopic geometric constraints while avoiding visual distortion. It formulates the warping problem as a quadratic energy minimization solved using a sparse linear solver. The method also allows local and global disparity adjustments for adapting stereoscopic images to different viewing conditions. Experiments show Ecway's spatially-varying war
Capacity of hybrid wireless mesh networks with random a ps
This paper proposes a hybrid wireless mesh network (WMN) architecture that allows the backbone to utilize random connections to access points (APs) in a wireless local area network (WLAN). Theoretical analysis shows that the capacity of a three-tier hybrid WMN is affected by the number of mesh router cells connected to APs, the ratio of access link bandwidth to backbone link bandwidth, and traffic balance among routers with AP access. Simulation results demonstrate that configuring APs and balancing traffic can significantly improve network capacity in the proposed hybrid architecture by taking advantage of wired connections through APs.
Bomb detection robot with wireless camera
This prototype robot is designed to help bomb squads by remotely detecting bombs and obstacles. It uses sensors to detect metals and obstacles as it moves through an area, sending that information back to operators via a wireless camera and computer. The robot is navigated and directed remotely using the camera while its metal detection, obstacle detection, and location data are sent to a base station for operators to monitor on LED displays and sounds.
Bed side patients monitoring system with emergency alert
The document describes a bedside patient monitoring system that measures temperature data using a portable medical monitoring unit. The unit contains a microcontroller, sensor board, and processing system to manage information, analyze data in real-time, and provide warnings for emergencies or abnormal diagnoses. The system takes a patient's temperature, converts it to digital using an ADC, and sends it to the microcontroller for processing. If the temperature exceeds a threshold, the system sounds a buzzer for notification.
More from Ecway2004 (20)
Coloring based inter-wban scheduling for mobile wireless body area networks
Coloring based inter-wban scheduling for mobile wireless body area networks
Code modulation based encryption & decryption technique for secure communicat...
Code modulation based encryption & decryption technique for secure communicat...
Clustering sentence level text using a novel fuzzy relational clustering algo...
Clustering sentence level text using a novel fuzzy relational clustering algo...
Cloudsim t-drive enhancing driving directions with taxi drivers’ intelligence
Cloudsim t-drive enhancing driving directions with taxi drivers’ intelligence
Cloudsim ranking on data manifold with sink points
Cloudsim ranking on data manifold with sink points
Cloudsim quality-differentiated video multicast in multirate wireless networks
Cloudsim quality-differentiated video multicast in multirate wireless networks
Cloudsim power allocation for statistical qo s provisioning in opportunistic...
Cloudsim power allocation for statistical qo s provisioning in opportunistic...
Cloudsim distributed web systems performance forecasting using turning bands...
Cloudsim distributed web systems performance forecasting using turning bands...
Cloudsim distributed processing of probabilistic top-k queries in wireless s...
Cloudsim distributed processing of probabilistic top-k queries in wireless s...
Channel assignment for throughput optimization in multichannel multiradio wir...
Channel assignment for throughput optimization in multichannel multiradio wir...
Channel allocation and routing in hybrid multichannel multiradio wireless mes...
Channel allocation and routing in hybrid multichannel multiradio wireless mes...
Capacity of hybrid wireless mesh networks with random a ps
Capacity of hybrid wireless mesh networks with random a ps
Bed side patients monitoring system with emergency alert
Bed side patients monitoring system with emergency alert
Application and stability analysis of a novel digital active emi filter used in a grid tied pv micro-inverter module
- 1. APPLICATION AND STABILITY ANALYSIS OF A NOVEL DIGITAL ACTIVE EMI FILTER USED IN A GRID-TIED PV MICRO-INVERTER MODULE ABSTRACT: This paper presents a novel technique to suppress common-mode electromagnetic interference (EMI) using a digital active EMI filter (DAEF). The DAEF control technique is concurrently implemented with a digital controller of a grid-tied photovoltaic microinverter. A brief description of the microinverter architecture and its inverter circuit is illustrated. The inverter stability is investigated using the overall transfer function. Accordingly, the system compensation is designed based on the direct quadrant (DQ) reference frame control technique. Finally, the proposed digital controller is tested on a grid-connected 200W dc-ac microinverter. The experiment results validate the effectiveness of the proposed technique. Compared with the conventional passive EMI filter, the proposed digital controller can achieve an equivalent or better performance in terms of EMI suppression and maintain stability within the operation bandwidth. Therefore, the embedded DAEF can significantly reduce the size, cost, and space of the overall power inverter printed circuit board without the need of a conventional passive EMI filter.