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Author : Héctor Adolfo Landa Barbato
Publisher :
ISBN 13 :
Total Pages : 256 pages
Book Rating : 4.:/5 (184 download)
Download or read book Derating of Induction Motors Due to Harmonics and Voltage Unbalance written by Héctor Adolfo Landa Barbato and published by . This book was released on 1987 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Maher Al-Badri
Publisher :
ISBN 13 :
Total Pages : 216 pages
Book Rating : 4.:/5 (111 download)
Download or read book Algorithms for Induction Motor Efficiency Determination written by Maher Al-Badri and published by . This book was released on 2015 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Induction motors are the most predominant motors used in the industry. They use two-thirds of the total electrical energy generated in the industrialized countries. Motors fail due to many reasons and many are rewound two or more times during their lifetimes. It is generally assumed that a rewound motor is not as efficient as the original motor. Precise estimation of efficiency of a refurbished motor or any existing motor is crucial in industries for energy savings, auditing and management. Full-load and partial load efficiency can be determined by using the dynamometer procedure which is a highly expensive way and available only in well-equipped laboratories. An inexpensive and easily applied procedure for efficiency estimation is therefore a target of researchers and engineers in the field. In this Ph.D. work, two novel methods for estimating repaired, refurbished, or any existing induction motors’ efficiency are proposed. The two methods (named Method A and Method B) require only a DC test (including temperature measurement), nameplate details, and RMS readings of no-load input power, input voltage, and input current. Experimental and field results of testing a total of 196 induction motors by using Method A are presented and the degree of accuracy is shown by comparing the estimated efficiencies to the measured values. Method B was validated by testing 8 induction motors with acceptable accuracy. To provide the necessary credits to the proposed techniques, an error analysis study is conducted to investigate the level of uncertainty through testing three induction motors, and the results of uncertainty of the direct measurements and no-load measurements using the proposed technique are declared. Derating is a necessary procedure to protect induction motors from overheating which is the main reason of motor failures. The overheating is caused by operating induction motors with unbalanced voltages, over or undervoltage, or harmonics rich power supplies. To derate a machine, its full-load efficiency with balanced undistorted voltages and with unbalanced or distorted voltages must be measured. In many situations in industry and due to critical processes, it is not allowed to interrupt induction machines operation. Hence, an in situ efficiency estimation technique is most required. In this thesis, three novel in situ efficiency estimation algorithms are proposed. The first algorithm is to estimate the full-load and partial loads efficiency of induction motors operating with balanced undistorted voltages. The algorithm is validated by testing 30 induction motors with acceptable accuracy. The second proposed algorithm is for full-load efficiency estimation of induction motors operating with unbalanced voltages. The technique is evaluated by testing 2 induction motors with different levels of voltage unbalance. The results showed an acceptable accuracy. The third proposed algorithm is for full-load efficiency estimation of induction motors operating with distorted unbalanced voltages where the harmonics effect is added. The technique is evaluated by testing 2 induction motors with different levels of voltage unbalance. The results showed an acceptable accuracy. The three novel algorithms are designed by using Genetic Algorithm, pre-tested data, and IEEE Method F1 calculations.
Author : David Springer
Publisher :
ISBN 13 :
Total Pages : 292 pages
Book Rating : 4.:/5 (226 download)
Download or read book Experimental Three Phase Induction Motor Derating Due to Thermal Stress Caused by Voltage Unbalance written by David Springer and published by . This book was released on 2007 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Joseph R. Moser
Publisher :
ISBN 13 :
Total Pages : 128 pages
Book Rating : 4.:/5 (89 download)
Download or read book Derating of Polyphase Induction Motors Due to External Unbalance written by Joseph R. Moser and published by . This book was released on 1956 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Martin M. Berndt
Publisher :
ISBN 13 :
Total Pages : 116 pages
Book Rating : 4.:/5 (89 download)
Download or read book Theoretical and Experimental Methods of Derating Polyphase Induction Motors Under Conditions of Fixed Line Voltage Unbalance written by Martin M. Berndt and published by . This book was released on 1957 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ewald F. Fuchs
Publisher : Academic Press
ISBN 13 : 0128009888
Total Pages : 1138 pages
Book Rating : 4.1/5 (28 download)
Download or read book Power Quality in Power Systems and Electrical Machines written by Ewald F. Fuchs and published by Academic Press. This book was released on 2015-07-14 with total page 1138 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of this must-have reference covers power quality issues in four parts, including new discussions related to renewable energy systems. The first part of the book provides background on causes, effects, standards, and measurements of power quality and harmonics. Once the basics are established the authors move on to harmonic modeling of power systems, including components and apparatus (electric machines). The final part of the book is devoted to power quality mitigation approaches and devices, and the fourth part extends the analysis to power quality solutions for renewable energy systems. Throughout the book worked examples and exercises provide practical applications, and tables, charts, and graphs offer useful data for the modeling and analysis of power quality issues. Provides theoretical and practical insight into power quality problems of electric machines and systems 134 practical application (example) problems with solutions 125 problems at the end of chapters dealing with practical applications 924 references, mostly journal articles and conference papers, as well as national and international standards and guidelines
Author : Ion Boldea
Publisher : CRC Press
ISBN 13 : 1420042653
Total Pages : 965 pages
Book Rating : 4.4/5 (2 download)
Download or read book The Induction Machine Handbook written by Ion Boldea and published by CRC Press. This book was released on 2010-12-12 with total page 965 pages. Available in PDF, EPUB and Kindle. Book excerpt: Often called the workhorse of industry, the advent of power electronics and advances in digital control are transforming the induction motor into the racehorse of industrial motion control. Now, the classic texts on induction machines are nearly three decades old, while more recent books on electric motors lack the necessary depth and detail on ind
Author : Hussain Mahdi
Publisher : GRIN Verlag
ISBN 13 : 3668273855
Total Pages : 84 pages
Book Rating : 4.6/5 (682 download)
Download or read book Fault diagnosis of induction motor fed by frequency converter. The signal signature analysis technique written by Hussain Mahdi and published by GRIN Verlag. This book was released on 2016-08-12 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thesis (M.A.) from the year 2013 in the subject Electrotechnology, Warsaw University of Technology (Electrical Engineering), language: English, abstract: 3-Phase induction motors are widely used as a source of mechanical power for effective operation and low costs. The abnormalities have to be detected in advance to avoid the motor breakdown and the cost associated restrain of plant production. This work discusses current and flux leakage spectral analysis techniques for the diagnosis of broken rotor bars and shortcircuited turns in induction motor fed from different AC sources. In spite of recent development of various types of models toward motor faults diagnosis and examining different problems associated with 3-phase induction motors the signal spectral analysis is considered as one of most important approaches. Most of the models from simple equivalent circuit to more complex d-q and a-b-c models and lastly developed hybrid models are provided for the integration of different forms of current and/or voltage unbalance. Generally, techniques that relate to asymmetry identify asymmetrical motor faults. Frequency converters in many applications feed induction motors. Such applications, which play a major role in industry, are growing at a high rate, allow to use 3-phase induction motor as variable speed applications. This paper proposes application of spectral signature analysis for the detection and diagnosis of abnormal electrical and mechanical conditions, which indicates chosen faults in induction motor fed by frequency converter.
Author : Deepakkumar J. Gandhi
Publisher :
ISBN 13 :
Total Pages : 572 pages
Book Rating : 4.:/5 (891 download)
Download or read book Analysis of the Effects of Power System Unbalance on Three-phase Induction Motors written by Deepakkumar J. Gandhi and published by . This book was released on 1976 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ion Boldea
Publisher : CRC Press
ISBN 13 : 1000056821
Total Pages : 475 pages
Book Rating : 4.0/5 ( download)
Download or read book Induction Machines Handbook written by Ion Boldea and published by CRC Press. This book was released on 2020-05-19 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: Induction Machines Handbook: Transients, Control Principles, Design and Testing presents a practical up-to-date treatment of intricate issues with induction machines (IM) required for design and testing in both rather constant- and variable-speed (with power electronics) drives. It contains ready-to-use industrial design and testing knowledge, with numerous case studies to facilitate a thorough assimilation of new knowledge. Individual Chapters 1 through 14 discuss in detail the following: Three- and multiphase IM transients Single-phase source IM transients Super-high-frequency models and behavior of IM Motor specifications and design principles IM design below 100 kW and constant V1 and f1 IM design above 100 kW and constant V1 and f1 IM design principles for variable speed Optimization design Single-phase IM design Three-phase IM generators Single-phase IM generators Linear induction motors Testing of three-phase IMs Single-phase IM testing Fully revised and amply updated to add the new knowledge of the last decade, this third edition includes special sections on Multiphase IM models for transients Doubly fed IMs models for transients Cage-rotor synchronized reluctance motors Cage-rotor PM synchronous motor Transient operation of self-excited induction generator Brushless doubly fed induction motor/generators Doubly fed induction generators with D.C. output Linear induction motor control with end effect Recent trends in IM testing with power electronics Cage-PM rotor line-start IM testing Linear induction motor (LIM) testing This up-to-date book discusses in detail the transients, control principles, and design and testing of various IMs for line-start and variable-speed applications in various topologies, with numerous case studies. It will be of direct assistance to academia and industry in conceiving, designing, fabricating, and testing IMs (for the future) of various industries, from home appliances, through robotics, e-transport, and renewable energy conversion.
Author : Ahmed F. Zobaa
Publisher : BoD – Books on Demand
ISBN 13 : 1789231906
Total Pages : 96 pages
Book Rating : 4.7/5 (892 download)
Download or read book Power System Harmonics written by Ahmed F. Zobaa and published by BoD – Books on Demand. This book was released on 2018-05-30 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excessive utilization of power electronic devices and the increasing integration of renewable energy resources with their inverter-based interfaces into distribution systems have brought different power quality problems in these systems. There is no doubt that the transition from traditional centralized power systems to future decentralized smart grid necessities is paying much attention to power quality knowledge to realize better system reliability and performance to be ready for the big change in the coming years of accommodating thousands of decentralized generation units. This book aims to present harmonic modeling, analysis, and mitigation techniques for modern power systems. It is a tool for the practicing engineers of electrical power systems that are concerned with the power system harmonics. Likewise, it is a key resource for academics and researchers who have some background in electrical power systems.
Author : Frank Kreith
Publisher : CRC Press
ISBN 13 : 9780849325144
Total Pages : 1146 pages
Book Rating : 4.3/5 (251 download)
Download or read book CRC Handbook of Energy Efficiency written by Frank Kreith and published by CRC Press. This book was released on 1996-10-24 with total page 1146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Addressing the needs of engineers, energy planners, and policy makers, CRC Handbook of Energy Efficiency provides up-to-date information on all important issues related to efficient energy use, including: Efficient energy technologies Economics Utility restructuring Integrated resource planning Energy efficient building design Industrial energy conservation Wind energy Solar thermal systems Photovoltaics Renewable energy Cogeneration Fossil fuel cost projections The rapid changes that characterize the technology of energy generation systems, and the forthcoming competition among energy producers, make this handbook a must for anyone involved in the science, technology, or policy of energy. The 53 expert contributors from industry, government, and universities, and the 600+ figures and tables make CRC Handbook of Energy Efficiency a professional and valuable resource.
Author : William H. Kersting
Publisher : CRC Press
ISBN 13 : 1420041738
Total Pages : 329 pages
Book Rating : 4.4/5 (2 download)
Download or read book Distribution System Modeling and Analysis written by William H. Kersting and published by CRC Press. This book was released on 2001-08-31 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: For decades, distribution engineers did not have the sophisticated tools developed for analyzing transmission systems-often they had only their instincts. Things have changed, and we now have computer programs that allow engineers to simulate, analyze, and optimize distribution systems. Powerful as these programs are, however, without a real unders
Author : Hermenegildo Balbino Reyes
Publisher :
ISBN 13 :
Total Pages : 270 pages
Book Rating : 4.E/5 ( download)
Download or read book Induction Motor, Its Theory and Operation Under Unbalanced Voltage Conditions written by Hermenegildo Balbino Reyes and published by . This book was released on 1919 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Francisco C. De La Rosa
Publisher : CRC Press
ISBN 13 : 1420004514
Total Pages : 203 pages
Book Rating : 4.4/5 (2 download)
Download or read book Harmonics and Power Systems written by Francisco C. De La Rosa and published by CRC Press. This book was released on 2006-05-22 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: Harmonics have always been a problem with industrial loads, but now more and more consumer and commercial power loads are cropping up as sources of harmonic currents. Approaching the problem from both utility and end-user perspectives, Harmonics and Power Systems addresses the most relevant aspects in the generation and propagation of harmonic curr
Author : Francesco Parasiliti
Publisher : Springer Science & Business Media
ISBN 13 : 364255475X
Total Pages : 579 pages
Book Rating : 4.6/5 (425 download)
Download or read book Energy Efficiency in Motor Driven Systems written by Francesco Parasiliti and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 579 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports the state of the art of energy-efficient electrical motor driven system technologies, which can be used now and in the near future to achieve significant and cost-effective energy savings. It includes the recent developments in advanced electrical motor end-use devices (pumps, fans and compressors) by some of the largest manufacturers. Policies and programs to promote the large scale penetration of energy-efficient technologies and the market transformation are featured in the book, describing the experiences carried out in different parts of the world. This extensive coverage includes contributions from relevant institutions in the Europe, North America, Latin America, Africa, Asia, Australia and New Zealand.
Author : Bin Wu
Publisher : John Wiley & Sons
ISBN 13 : 0471773700
Total Pages : 350 pages
Book Rating : 4.4/5 (717 download)
Download or read book High-Power Converters and AC Drives written by Bin Wu and published by John Wiley & Sons. This book was released on 2007-01-29 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest cutting-edge technology in high-power converters and medium voltage drives, and provides a complete analysis of various converter topologies, modulation techniques, practical drive configurations, and advanced control schemes. Supplemented with more than 250 illustrations, the author illustrates key concepts with simulations and experiments. Practical problems, along with accompanying solutions, are presented to help you tackle real-world issues.
