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Variable Speed Constant Frequency Double Output Induction Generator Vscf Doig
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Book Synopsis VARIABLE-SPEED CONSTANT-FREQUENCY DOUBLE OUTPUT INDUCTION GENERATOR (VSCF-DOIG). by : Ziyad Mahmud Salameh
Download or read book VARIABLE-SPEED CONSTANT-FREQUENCY DOUBLE OUTPUT INDUCTION GENERATOR (VSCF-DOIG). written by Ziyad Mahmud Salameh and published by . This book was released on 1982 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: After finding the overlap angle, the waveforms of the stator current, the inverter current, the rotor current, the rotor voltage, and the torque are constructed, and the harmonic contents of these waveforms are found using Fourier analysis.
Book Synopsis 7th Mediterranean Electrotechnical Conference by : Önder Yüksel
Download or read book 7th Mediterranean Electrotechnical Conference written by Önder Yüksel and published by . This book was released on 1994 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Variable Frequency Operation of Stand-alone Doubly Fed Induction Generator Connected to the DC System by : Manish Niraula
Download or read book Variable Frequency Operation of Stand-alone Doubly Fed Induction Generator Connected to the DC System written by Manish Niraula and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This research focuses on the stand-alone operation of doubly fed induction generator (DFIG) with variable stator frequency. In stand-alone configuration, the stator side is connected to a three phase diode rectifier and a stand-alone electrical load. The dc output voltage regulation is achieved by applying stator flux oriented control scheme in synchronous reference frame. The losses that occur in the power electronics components depend on the current flowing through the switches and so in the power rating of the converter. WECS based on DFIG are designed for variable speed operation. So, the main objective of the DFIG control strategy is to regulate the generator speed so that maximum amount of wind energy is extracted for the given speed of the wind. But the generator cannot be run in full speed range if the converter rating used is smaller than the rated power of the turbine. Thus, the speed range of the DFIG is determined by the converter rating and hence the slip is limited using variable frequency operation of DFIG to reduce the converter rating and extend the speed range of operation. The dc-link capacitor voltage is regulated to a constant rated value and so the stator voltage amplitude is also constant. The flux-frequency product being constant, a variation in stator flux magnitude results in a frequency variation. So, the stator frequency can be scheduled in such a way that the output power is maximized. Some simulation tests have been run during this work to find the optimal stator frequency for a fixed range of speed and used as a look up table to improve the power conversion efficiency of the whole generator system.
Download or read book 1981 Midwest Power Symposium written by and published by . This book was released on 1981 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1983 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Laboratory Doubly Fed Induction Generator for Wind Energy Research by : Zhouxing Hu
Download or read book Development of Laboratory Doubly Fed Induction Generator for Wind Energy Research written by Zhouxing Hu and published by . This book was released on 2010 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis studies the basic concept of doubly-fed induction generators (DFIG) and develops a laboratory model to simulate DFIG wind turbine generators (WTG). 0́−Doubly-fed0́+ refers to the three-phase stator and rotor windings, both of which have electric power exchange with the ac power system. Different from synchronous generators installed in coal, oil, gas, hydro, and nuclear power plants, asynchronous DFIG generators are widely used for wind energy conversion because of the diversity of wind power. Through the control of back-to-back PWM converters connected between the DFIG rotor and power system, a DFIG can operate at variable speed but constant stator frequency. Below rated wind speed, the DFIG controls the torque on the turbine shaft to track the best operating point (i.e. at best tip-speed ratio). Above rated wind speed, the pitch angle of the turbine blades is adjusted to limit the power captured from the wind. DFIG can provide power factor regulation by controlling the reactive power exchange with the grid. In this laboratory DFIG experiment, a DC motor is open-loop controlled as a prime mover with variable mechanical power output. A wound-rotor induction motor is mechanically coupled to the DC motor and operated as a DFIG. An IGBT inverter is connected to a variable DC voltage source in order to provide a controllable three-phase voltage applied to the rotor windings. The reactive power output is controlled by setting the magnitude of the rotor excitation voltage. The active power (torque), reactive power output and speed can be controlled by setting the frequency of the rotor excitation voltage. Through manually adjusting the DC input and rotor excitation voltage, the laboratory DFIG is able to operate at a variable simulated wind speed (4 0́3 25 m/s) with desired power output following the GE 1.5 MW WTG. As an advanced control strategy, decoupled d-q vector control for DFIG using back-to-back converters is studied. Under a stator-flux oriented reference frame, for the rotor-side converter, the rotor d- component (i.e. vrd, ird) controls the stator reactive power (rotor excitation current), while the rotor q- component (i.e. vrq, irq) controls the stator active power (electrical torque); for the supply-side converter, the d- component (i.e. vd, id) controls the DC-link voltage, while the q- component (i.e. vq, iq) controls the reactive power.
Book Synopsis Advances in Control Technologies for Brushless Doubly-fed Induction Generators by : Yi Liu
Download or read book Advances in Control Technologies for Brushless Doubly-fed Induction Generators written by Yi Liu and published by Springer Nature. This book was released on 2022-03-06 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents advances in control technologies for efficient operation of the brushless doubly-fed induction generator (BDFIG). For robust and low-cost operation of BDFIGs, it is required to keep high-quality output voltage and eliminate the speed/position encoder under different loads and operation conditions. Some advanced control technologies, from the authors’ latest work on these topics, are presented to achieve this goal with simple and accurate texts, illustrations, and tables. The qualified outcomes obtained from this book assure the high-performance operation of BDFIGs and also give the readers a straight insight toward challenges in this research area in the future.
Book Synopsis Proceedings of the ... Intersociety Energy Conversion Engineering Conference by :
Download or read book Proceedings of the ... Intersociety Energy Conversion Engineering Conference written by and published by . This book was released on 1989 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Liquid Cooled Variable Speed Constant Frequency (VSCF) Converter Device Development by : John W. Butler
Download or read book Liquid Cooled Variable Speed Constant Frequency (VSCF) Converter Device Development written by John W. Butler and published by . This book was released on 1982 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Further miniaturization of high-power semi-conductor devices utilizing silicon disks larger than 12 mm. requires major innovations to improve the average thermal impedance and surge capability. The high thermal impedance in existing discrete devices is caused mostly by the dry interfaces necessary to provide stress relief. This report presents a unique approach to solving the dry interface problem. It describes the design, fabrication and evaluation of a smaller, lighter, electrically isolated dual thyristor module featuring structured copper, solder bonding, polyimide passivation, direct bonded copper on beryllium oxide and a hermetic sealed aluminum case. Details of the SCR modules evaluation in a 60 KVA single channel VSCF electrical generating system are included. (Author).
Book Synopsis Proceedings of the 24th Intersociety Energy Conversion Engineering Conference: Conversion technologies and space nuclear reactor systems by :
Download or read book Proceedings of the 24th Intersociety Energy Conversion Engineering Conference: Conversion technologies and space nuclear reactor systems written by and published by . This book was released on 1989 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the ... Midwest Symposium on Circuits and Systems by :
Download or read book Proceedings of the ... Midwest Symposium on Circuits and Systems written by and published by . This book was released on 1990 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1982 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Description and Test Results of a Variable Speed, Constant Frequency Generating System by : Frank J. Brady
Download or read book Description and Test Results of a Variable Speed, Constant Frequency Generating System written by Frank J. Brady and published by . This book was released on 1985 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the 33rd Midwest Symposium on Circuits and Systems by : Ronald H. Johnston
Download or read book Proceedings of the 33rd Midwest Symposium on Circuits and Systems written by Ronald H. Johnston and published by . This book was released on 1991 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Control of Force Turn-off Direct Frequency Changers for Variable Speed Constant Frequency Systems by : Yoone-Ho Kim
Download or read book Control of Force Turn-off Direct Frequency Changers for Variable Speed Constant Frequency Systems written by Yoone-Ho Kim and published by . This book was released on 1987 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Renewable Energy System Design by : Ziyad Salameh
Download or read book Renewable Energy System Design written by Ziyad Salameh and published by Academic Press. This book was released on 2014-05-12 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: The limitation of fossil fuels has challenged scientists and engineers to search for alternative energy resources that can meet future energy demand. Renewable Energy System Design is a valuable reference focusing on engineering, design, and operating principles that engineers can follow in order to successfully design more robust and efficient renewable energy systems. Written by Dr. Ziyad Salameh, an expert with over thirty years of teaching, research, and design experience, Renewable Energy System Design provides readers with the "nuts and bolts" of photovoltaic, wind energy, and hybrid wind/PV systems. It explores renewable energy storage devices with an emphasis on batteries and fuel cells and emerging sustainable technologies like biomass, geothermal power, ocean thermal energy conversion, solar thermal, and satellite power. Renewable Energy System Design is a must-have resource that provides engineers and students with a comprehensive yet practical guide to the characteristics, principles of operation, and power potential of the most prevalent renewable energy systems. - Explains and demonstrates design and operating principles for solar, wind, hybrid and emerging systems with diagrams and examples - Utilizes case studies to help engineers anticipate and overcome common design challenges - Explores renewable energy storage methods particularly batteries and fuel cells and emerging renewable technologies
Book Synopsis Structural and Thermal Design of a Dual-rotor Constant-frequency, Variable-speed Generator by : Andrew Joseph Thomas
Download or read book Structural and Thermal Design of a Dual-rotor Constant-frequency, Variable-speed Generator written by Andrew Joseph Thomas and published by . This book was released on 2003 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
