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Informationen zum Autor Dr. P. C. Sen is Emeritus Professor of Electrical and Computer Engineering at Queen's University, Canada. Dr. Sen received his Ph.D. degree at the University of Toronto in 1967. He has worked for industries in India and Canada and was a consultant to electrical industries in Canada. He has authored over 215 technical papers in the general area of electric motor drives and power electronics. He is the author of two internationally acclaimed textbooks: Principles of Electric Machines and Power Electronics and Thyristor DC Drives (Wiley, 1981). He has taught electric machines, power electronics, and electric drive systems for over 45 years. His fields of interest include power electronics, electric drive systems, switching power supplies, wind energy systems, digital control, fuzzy logic control, and modern control techniques for power electronics and motor drive systems. Klappentext Principles of Electrical Machines provides a comprehensive discourse on the characteristics and working principles of various types of electrical machines. Starting with magnetic circuits which form an integral part of electrical machines, the book goes on to cover transformers and the general principles of energy conversion. The book then extensively discusses different types of electrical machines-dc machines, three-phase induction machines, and three-phase synchronous machines; single-phase motors, which are widely used in household and office appliances; and special motors such as servomotors, linear synchronous motors, brushless DC motors, switched reluctance motors, synchro motors, and stepper motors. Using a gradational approach, the first few sections in each chapter are devoted to the basic principles of operation, and later sections are devoted mostly to a more detailed study of the particular machine. In addition to strengthening the organization of the contents, this International adaptation provides new and updated materials, and is well supported by a plethora of new examples, illustrations, end-of-chapter problems, and multiple choice questions. Inhaltsverzeichnis CHAPTER 1: MAGNETIC CIRCUITS 1.1 MAGNETIC CIRCUITS 1.2 HYSTERESIS 1.3 RELATIONSHIP BETWEEN FLUX, EMF AND FORCE 1.4 SINUSOIDAL EXCITATION 1.5 PERMANENT MAGNET CHAPTER 2: TRANSFORMERS 2.1 IDEAL TRANSFORMER 2.2 PRACTICAL TRANSFORMER 2.3 VOLTAGE REGULATION 2.4 EFFICIENCY 2.5 TESTS ON TRANSFORMERS 2.6 AUTOTRANSFORMER 2.7 THREE-PHASE TRANSFORMERS 2.8 HARMONICS IN THREE-PHASE TRANSFORMER BANKS 2.9 THREE WINDING TRANSFORMERS 2.10 PARALLEL OPERATION AND LOAD SHARING OF SINGLE PHASE AND THREE PHASE TRANSFORMERS 2.11 TAP CHANGING TRANSFORMERS 2.12 PER-UNIT (PU) SYSTEM 2.13 HEATING AND COOLING OF TRANSFORMERS 2.14 APPLICATIONS OF TRANSFORMERS CHAPTER 3: ELECTROMECHANICAL ENERGY CONVERSION 3.1 ENERGY CONVERSION PROCESS 3.2 FIELD ENERGY 3.3 MECHANICAL FORCE IN THE ELECTROMAGNETIC SYSTEM 3.4 ROTATING MACHINES 3.5 CYLINDRICAL MACHINES CHAPTER 4: MACHINE WINDINGS, MMF DISTRIBUTION, AND MAGNETIC FIELDS 4.1 WINDING ARRANGEMENT 4.2 PULSATING AND ROTATING MAGNETIC FIELDS 4.3 SPACE HARMONICS 4.4 TIME HARMONICS CHAPTER 5: DC MACHINES 5.1 ELECTROMAGNETIC CONVERSION 5.2 DC MACHINES 5.3 DC GENERATORS 5.4 DC MOTORS 5.5 SPEED CONTROL 5.6 PERMANENT MAGNET DC (PMDC) MOTORS 5.7 BRAKING OF DC MOTORS 5.8 PRINTED CIRCUIT BOARD (PCB) MOTORS CHAPTER 6: INDUCTION (ASYNCHRONOUS) MACHINES 6.1 CONSTRUCTIONAL FEATURES 6.2 INDUCED VOLTAGES 6.3 POLYPHASE INDUCTION MACHINE 6.4 THREE MODES OF OPERATION 6.5 INVERTED INDUCTION MACHINE 6.6 EQUIVALENT CIRCUIT MODEL 6.7 NO-LOAD TEST,...
