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Articles 1 - 30 of 70
Full-Text Articles in Electrical and Electronics
Implementation Of A Modified Perturb And Observe Maximum Power Point Tracking Algorithm For Photovoltaic System Using An Embedded Microcontroller, Dr. Adel A. Elbaset
Implementation Of A Modified Perturb And Observe Maximum Power Point Tracking Algorithm For Photovoltaic System Using An Embedded Microcontroller, Dr. Adel A. Elbaset
Dr. Adel A. Elbaset
The conventional algorithm of perturb and observe (P&O) is widely applied due to its simplicity, low cost and easy implementation. However, it suffers from instabilities during rapid changes of weather and/or oscillation around maximum power point (MPP) at steady state. Instabilities occur due to the incorrect decision taken by the conventional P&O algorithm at the first step change in duty cycle during the rapid change in radiation. The reason for the steadystate oscillation is the continuous perturbation and tradeoff between step sizes and the convergence time. This study presents a modified P&O algorithm to overcome such drawbacks. It uses a …
Study, Design And Performance Analysis Of Grid-Connected Photovoltaic Power Systems, Dr. Adel A. Elbaset
Study, Design And Performance Analysis Of Grid-Connected Photovoltaic Power Systems, Dr. Adel A. Elbaset
Dr. Adel A. Elbaset
Solar photovoltaic (PV) is one of the most promising renewable energy resources that converts solar energy into electricity with environment friendly manner. However, it has low efficiency and high relative costs. In order to overcome these drawbacks, a grid-connected PV energy system should be required to satisfy the load demand. The aim of this thesis is to study, design and performance analysis of grid-connected PV system as follows: • System modeling; that is composed of two-diode model to describe the I-V and P-V characteristic curves of PV system performance. Modeling of PV system represents the main goal in the design …
Biparametric Analyses Of Charge Trapping In Cd0.9Zn0.1Te Based Virtual Frisch Grid Detectors, S. K. Chaudhuri, K. J. Zavalla, R. M. Krishna, K. C. Mandal
Biparametric Analyses Of Charge Trapping In Cd0.9Zn0.1Te Based Virtual Frisch Grid Detectors, S. K. Chaudhuri, K. J. Zavalla, R. M. Krishna, K. C. Mandal
Krishna C. Mandal
No abstract provided.
Biparametric Analyses Of Charge Trapping In Cd0.9Zn0.1Te Based Virtual Frisch Grid Detectors, S. K. Chaudhuri, K. J. Zavalla, R. M. Krishna, K. C. Mandal
Biparametric Analyses Of Charge Trapping In Cd0.9Zn0.1Te Based Virtual Frisch Grid Detectors, S. K. Chaudhuri, K. J. Zavalla, R. M. Krishna, K. C. Mandal
Krishna C. Mandal
No abstract provided.
Biparametric Analyses Of Charge Trapping In Cd0.9Zn0.1Te Based Virtual Frisch Grid Detectors, S. K. Chaudhuri, K. J. Zavalla, R. M. Krishna, K. C. Mandal
Biparametric Analyses Of Charge Trapping In Cd0.9Zn0.1Te Based Virtual Frisch Grid Detectors, S. K. Chaudhuri, K. J. Zavalla, R. M. Krishna, K. C. Mandal
Krishna C. Mandal
No abstract provided.
Characterization Of Deep Levels In N-Type And Semi-Insulating 4h-Sic Epitaxial Layers By Thermally Stimulated Current Spectroscopy, P. G. Muzykov, Ramesh Madhu Krishna, K. C. Mandal
Characterization Of Deep Levels In N-Type And Semi-Insulating 4h-Sic Epitaxial Layers By Thermally Stimulated Current Spectroscopy, P. G. Muzykov, Ramesh Madhu Krishna, K. C. Mandal
Krishna C. Mandal
No abstract provided.
Characterization Of Deep Levels In N-Type And Semi-Insulating 4h-Sic Epitaxial Layers By Thermally Stimulated Current Spectroscopy, P. G. Muzykov, Ramesh Madhu Krishna, K. C. Mandal
Characterization Of Deep Levels In N-Type And Semi-Insulating 4h-Sic Epitaxial Layers By Thermally Stimulated Current Spectroscopy, P. G. Muzykov, Ramesh Madhu Krishna, K. C. Mandal
Krishna C. Mandal
No abstract provided.
Design Of An Electrical Power System For The Openorbiter Cubesat, Sofiane Chaieb, Michael Wegerson, Jeremy Straub, Ronald Marsh, David Whalen
Design Of An Electrical Power System For The Openorbiter Cubesat, Sofiane Chaieb, Michael Wegerson, Jeremy Straub, Ronald Marsh, David Whalen
Jeremy Straub
The OpenOrbiter Small Spacecraft Development Initiative aims to create an Open Prototype for Educational Nanosats (OPEN) framework (see [1]) for a complete 1-U CubeSat (10 cm x 10 cm x 10 cm, 1.33 kg spacecraft) with a total parts cost of less than $5,000 [2]. In order to supply all spacecraft subsystems with power, an electrical power system (EPS) has been implemented. The EPS generates power using multiple solar panels, stores it in batteries and regulates it to provide continuous levels of power to all of the subsystems of the spacecraft. The EPS has a crucial role in the spacecraft …
Review Of Normal And Infrequent In-Feed Loss Risks In The Transmission System Of Oman, Omar H. Abdalla, Adil Al-Busaidi, Hilal Al-Hadi, Hisham A. Al-Riyami, Ahmed Al-Nadabi
Review Of Normal And Infrequent In-Feed Loss Risks In The Transmission System Of Oman, Omar H. Abdalla, Adil Al-Busaidi, Hilal Al-Hadi, Hisham A. Al-Riyami, Ahmed Al-Nadabi
Omar H. Abdalla
The paper presents technical studies performed to review the values of the Normal Infeed Loss Risk (NILR) and Infrequent Infeed Loss Risk (IILR) in the Transmission System Security Standard (TSSS). The objective is to facilitate the connection of the largest power station in Oman, which is Sur 2000 MW IPP, to the Main Interconnected Transmission System (MITS), while complying with the requirements of the TSSS. The full output of 2000 MW of Sur power plant is expected to available in 2015; therefore the MITS model of 2015 is used in the studies using the DIgSILENT professional software. The model includes …
A 12-Sector Space Vector Switching Scheme For Performance Improvement Of Matrix Converter Based Dtc Of Im Drive, Saad Mekhilef, Sina Sebtahmadi
A 12-Sector Space Vector Switching Scheme For Performance Improvement Of Matrix Converter Based Dtc Of Im Drive, Saad Mekhilef, Sina Sebtahmadi
Saad Mekhilef
No abstract provided.
Optimal Design Of A Pv/Fuel Cell Hybrid Power System For The City Of Brest In France, Dr. Adel A. Elbaset
Optimal Design Of A Pv/Fuel Cell Hybrid Power System For The City Of Brest In France, Dr. Adel A. Elbaset
Dr. Adel A. Elbaset
This paper deals with the optimal design of a stand-alone hybrid photovoltaic and fuel cell power system without battery storage to supply the electric load demand of the city of Brest, Western Brittany in France. The proposed optimal design study is focused on economical performance and is mainly based on the loss of the power supply probability concept. The hybrid power system optimal design is based a simulation model developed using HOMER. In this context, a practical load demand profile of Brest city is used with real weather data.
Power Quality In Grid Connected Renewable Energy Systems: Role Of Custom Power Devices, Shafiuzzaman Khan Khadem, Malabika Basu, Michael Conlon
Power Quality In Grid Connected Renewable Energy Systems: Role Of Custom Power Devices, Shafiuzzaman Khan Khadem, Malabika Basu, Michael Conlon
Dr. Shafiuzzaman Khan Khadem
This paper deals with the technical review of power quality problems associated with the renewable based distributed generation systems and how the custom power devices like STATCOM, DVR and UPQC play important role in power quality improvement. IEEE and IEC standard for the grid connected renewable energy systems are one of the critical point of interest for the selection of custom power devices. Special attention has been given on the compensation of reactive power, harmonic current and voltage fluctuation during the interconnected as well as islanding mode of operation. As the solar and wind are the most abundant resources therefore …
Parallel Operation Of Inverters And Active Power Filters In Distributed Generation System: A Review, Shafiuzzaman Khan Khadem, Malabika Basu, Michael Conlon
Parallel Operation Of Inverters And Active Power Filters In Distributed Generation System: A Review, Shafiuzzaman Khan Khadem, Malabika Basu, Michael Conlon
Dr. Shafiuzzaman Khan Khadem
In this paper a technical review of parallel operation of power electronics inverters for load sharing conditions in distributed generation (DG) network is presented. Emphasis is given to parallel operation of Active Power Filters (APFs) as they are widely used to mitigate load current disturbances into DG networks. Discussions on recent advances in control strategies as applied to APFs are presented.
Direct Power Control Of Dfigs Based Wind Energy Generation Systems Under Distorted Grid Voltage Conditions, Emad Gameil Shehata E. G. Shehata
Direct Power Control Of Dfigs Based Wind Energy Generation Systems Under Distorted Grid Voltage Conditions, Emad Gameil Shehata E. G. Shehata
Emad Gameil Shehata E. G. Shehata
This paper presents an improved direct power control (DPC) strategy of a wind turbine driven doubly fed induction generators (DFIGs) connected to distorted grid voltage conditions. A coordinate control strategy of the grid side converter (GSC) and rotor side converter (RSC) of the DFIG is designed to improve the overall scheme performance. The RSC is controlled based on a DPC principle to eliminate the electromagnetic torque and stator reactive power oscillations. The total active and reactive power oscillations are compensated by the GSC control to achieve constant active and reactive powers from the overall DFIG system. A current control scheme …
Voltge & Reactive Power Control In Oman Transmission System, Omar H. Abdalla, Rashid Al-Badwawi, Hilal Al-Hadi, Hisham Al-Riyami, Ahmed Al-Nadabi, Karim Karoui, Ariadne Szekut
Voltge & Reactive Power Control In Oman Transmission System, Omar H. Abdalla, Rashid Al-Badwawi, Hilal Al-Hadi, Hisham Al-Riyami, Ahmed Al-Nadabi, Karim Karoui, Ariadne Szekut
Omar H. Abdalla
The paper presents voltage and reactive power control in the Main Interconnected Transmission System (MITS) in the Sultanate of Oman. The objective is to improve voltage profile at substations supplying distribution companies and directly connected bulk customer. An objective function is used to maximize reactive power margin of generating units to maintain as much as possible reserves on different generators. The control parameters include existing voltage and reactive power control means, e.g. settings of generators’ excitation/AVR, transformer tap-changing, and capacitor bank switching. The constraints include operational limits of the above control devices in addition to allowable limits of busbar voltages, …
Wireless Transmission Network : A Imagine, Radhey Shyam Meena Engineer, Neeraj Kumar Garg Asst.Prof
Wireless Transmission Network : A Imagine, Radhey Shyam Meena Engineer, Neeraj Kumar Garg Asst.Prof
Radhey Shyam Meena
World cannot be imagined without electrical power. Generally the power is transmitted through transmission networks. This paper describes an original idea to eradicate the hazardous usage of electrical wires which involve lot of confusion in particularly organizing them. Imagine a future in which wireless power transfer is feasible: cell phones, household robots, mp3 players, laptop computers and other portable electronic devices capable of charging themselves without ever being plugged in freeing us from that final ubiquitous power wire. This paper includes the techniques of transmitting power without using wires with an efficiency of about 95% with non-radioactivemethods. In this paper …
Battery Energy Storage System In Solar Power Generation, Radhey Shyam Meena Er., Deepa Sharma
Battery Energy Storage System In Solar Power Generation, Radhey Shyam Meena Er., Deepa Sharma
Radhey Shyam Meena
Grid-connected solar PV dramatically changes the load profile of an electric utility customer. The expected widespread adoption of solar generation by customers on the distribution system poses significant challenges to system operators both in transient and steady state operation, from issues including voltage swings, sudden weather-induced changes in generation, and legacy protective devices designed with one-way power flow in mind
At89c51 Microcontroller Based Control Model For Hybrid Assistive Limb (Knee ), Suresh L
At89c51 Microcontroller Based Control Model For Hybrid Assistive Limb (Knee ), Suresh L
suresh L
In this paper, a controlling system is implemented for a wearable walking supporting device so called as Hybrid Assistive Limb. The control circuit is implemented without considering the biological signals of the human body for the knee part, which is based on the knee joint moment from the human body model. The control and a driving circuit s are implemented to assistive the knee as for the requir ement of knee joint dynamics.
Battery Energy Storage System In Solar Power Generation, Radhey Shyam Meena Er.
Battery Energy Storage System In Solar Power Generation, Radhey Shyam Meena Er.
Radhey Shyam Meena
As solar photovoltaic power generation becomes more commonplace, the inherent intermittency of the solar resource poses one of the great challenges to those who would design and implement the next generation smart grid. Specifically, grid-tied solar power generation is a distributed resource whose output can change extremely rapidly, resulting in many issues for the distribution system operator with a large quantity of installed photovoltaic devices. Battery energy storage systems are increasingly being used to help integrate solar power into the grid. These systems are capable of absorbing and delivering both real and reactive power with sub-second response times. With these …
Z-Source Inverter For Automotive Applications, Omar Ellabban, Joeri Van Mierlo
Z-Source Inverter For Automotive Applications, Omar Ellabban, Joeri Van Mierlo
Omar Ellabban
No abstract provided.
Capacitor Voltage Control Techniques Of The Z-Source Inverter: A Comparative Study, Omar Ellabban, Joeri Van Mierlo, Philippe Lataire
Capacitor Voltage Control Techniques Of The Z-Source Inverter: A Comparative Study, Omar Ellabban, Joeri Van Mierlo, Philippe Lataire
Omar Ellabban
The Z-source inverter (ZSI) is a recently proposed single-stage power conversion topology. It adds voltage boost capability for complementing the usual voltage buck operation of a traditional voltage source inverter (VSI) with improved reliability. In this paper, a single-loop and dual-loop capacitor voltage control techniques for the ZSI are digitally designed based on a third order small signal model of the ZSI, implemented using a digital signal processor (DSP) and compared. Simulation and experimental results of a 30 kW ZSI during input voltage changes, load disturbances and steady state operations are presented and compared. The results show that the dual-loop …
Switch Yard Operation In Thermal Power Plant(Katpp Jhalawar Rajasthan), Radhey Shyam Meena Er.
Switch Yard Operation In Thermal Power Plant(Katpp Jhalawar Rajasthan), Radhey Shyam Meena Er.
Radhey Shyam Meena
Switchyard Provides the facilities for switching ,protection & Control of electric power. To handle high Voltage power with proper Safety measures. To isolate the noises coming from the grid with true 50Hz power SWITCH YARD IS IMPORTANT PART IN THERMAL PLANT. IN KALISINDH THERMAL 400KV AND 220KV SWITCH YARD LOCATED.
Optimization Of Shallow Foundation Using Gravitational Search Algorithm, Mohammad Khajehzadeh, Mohd R. Taha, Ahmed El-Shafie, Mahdiyeh Eslami
Optimization Of Shallow Foundation Using Gravitational Search Algorithm, Mohammad Khajehzadeh, Mohd R. Taha, Ahmed El-Shafie, Mahdiyeh Eslami
Dr. Mahdiyeh Eslami (مهدیه اسلامی)
No abstract provided.
Dynamic Modeling Of Solid Oxide Fuel Cell Stack Based On Local Linear Model Tree Algorithm, Hesamoddin Marzooghi, M. Raoofat, M. Dehghani, G. H. Elahi
Dynamic Modeling Of Solid Oxide Fuel Cell Stack Based On Local Linear Model Tree Algorithm, Hesamoddin Marzooghi, M. Raoofat, M. Dehghani, G. H. Elahi
Hesamoddin Marzooghi
This paper presents a dynamic model for Solid Oxide Fuel Cell (SOFC) stack using Local Linear Model Tree (LOLIMOT) algorithm which is useful for both dynamic and steady-state studies. Most of conventional SOFC models require a large number of parameters and factors, which are difficult to be determined or estimated. In this paper, a LOLIMOT-based model, which does not require the parameters of fuel cell, is proposed for each operation mode of SOFC. In these models, decision tree-based feature selection approach is exploited to select inputs of the LOLIMOT. The proposed models are trained in a short time and they …
A Survey On Flexible Ac Transmission Systems (Facts), Mahdiyeh Eslami, Hussain Shareef, Azah Mohamed, Mohammad Khajehzadeh
A Survey On Flexible Ac Transmission Systems (Facts), Mahdiyeh Eslami, Hussain Shareef, Azah Mohamed, Mohammad Khajehzadeh
Dr. Mahdiyeh Eslami (مهدیه اسلامی)
No abstract provided.
Pss And Tcsc Damping Controller Coordinated Design Using Gsa, Mahdiyeh Eslami, Hussain Shareef, Azah Mohamed, Mohammad Khajehzadeh
Pss And Tcsc Damping Controller Coordinated Design Using Gsa, Mahdiyeh Eslami, Hussain Shareef, Azah Mohamed, Mohammad Khajehzadeh
Dr. Mahdiyeh Eslami (مهدیه اسلامی)
No abstract provided.
Modeling And Simulation Of Z-Source Inverter, Suresh L
Modeling And Simulation Of Z-Source Inverter, Suresh L
suresh L
Z – source inverters have been recently proposed as an alternative power conversion concept as they have both voltage buck and boost capabilities. These inverters use a unique impedance network, coupled between the power source and converter circuit, to provide both voltage buck and boost properties, which cannot be achieved with conventional voltage source and current source inverters. To facilitate understanding of Z – source inverter, this paper presents a detailed analysis, showing design of impedance network, implementation of simple Boost control PWM technique and simulation of Z – source inverter for different values of modulation indices.
A Survey Of The State Of The Art In Particle Swarm Optimization, Mahdiyeh Eslami, Hussain Shareef, Mohammad Khajehzadeh, Azah Mohamed
A Survey Of The State Of The Art In Particle Swarm Optimization, Mahdiyeh Eslami, Hussain Shareef, Mohammad Khajehzadeh, Azah Mohamed
Dr. Mahdiyeh Eslami (مهدیه اسلامی)
No abstract provided.
Power Supply Electrical Design, Robert Mayers, Matt Olson, Zach Bryant, Ali Haider, Stephen Holmes, Paul Johnson, Noah Root, Josh Berk, Jeremy Straub
Power Supply Electrical Design, Robert Mayers, Matt Olson, Zach Bryant, Ali Haider, Stephen Holmes, Paul Johnson, Noah Root, Josh Berk, Jeremy Straub
Jeremy Straub
No abstract provided.
Nonlinear Multivariable Modeling Of Solid Oxide Fuel Cells Using Core Vector Regression, M. Mohammadi, M. Raoofat, Hesamoddin Marzooghi, G. B. Gharehpetiangharehpetian
Nonlinear Multivariable Modeling Of Solid Oxide Fuel Cells Using Core Vector Regression, M. Mohammadi, M. Raoofat, Hesamoddin Marzooghi, G. B. Gharehpetiangharehpetian
Hesamoddin Marzooghi
This paper presents new steady-state and dynamic models for solid oxide fuel cells (SOFCs) using core vector regression (CVR). So far, most of conventional SOFC models have been presented based on conversion laws. Due to complex mathematical equations used in these models, they are time-consuming and need large amount of memory to be applied for controller design, especially power electronic interface controller design, generation and load predictions, optimization and other studies. To overcome these problems, some black-box models, such as support vector machine (SVM) and artificial neural network (ANN)-based models have been also proposed for SOFC. In this paper, in …