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Electromechanical Motion Devices
Paul C Krause, Oleg Wasynczuk, Scott D Sudhoff, Steven Pekarek
This text provides a basic treatment of modern electric machine analysis that gives readers the necessary background for comprehending the traditional applications and operating characteristics of electric machines as well as their emerging applic...
Power Magnetic Devices
Scott D Sudhoff
Presents a multi-objective design approach to the many power magnetic devices in use today Power Magnetic Devices: A Multi-Objective Design Approach addresses the design of power magnetic devices including inductors, transformers, electromagnets, ...
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PAUL KRAUSE, PhD, is founder of P.C. Krause and Associates. He is the sole author of the first edition of this book, an IEEE Fellow, and a winner of the prestigious Tesla Award. He is also the coauthor of Electromechanical Motion Devices, Second Edition, from Wiley-IEEE Press. OLEG WASYNCZUK, PhD, is a Professor of Electrical and Computer Engineering at Purdue University. He is a Fellow of IEEE, an award-winning author of numerous papers, and is co-author of Electromechanical Motion Devices, Second Edition, from Wiley-IEEE Press. SCOTT SUDHOFF, PhD, is Editor-in-Chief of IEEE Transactions on Energy Conversion and a Fellow of IEEE. He is also a Professor at Purdue University. He has produced extensive writings in the areas of electric machinery and power electronic converter analysis, simulation, and design. STEVEN PEKAREK, PhD, is a Fellow of the IEEE and has served on the organizing committee of several conferences focusing on electric machinery and power electronics. He and his students have published many papers in these areas. He presently serves as a faculty member in ECE at Purdue University.
Preface xiii 1 THEORY OF ELECTROMECHANICAL ENERGY CONVERSION 1 1.1. Introduction 1 1.2. Magnetically Coupled Circuits 1 1.3. Electromechanical Energy Conversion 12 1.4. Elementary ac Machines 35 2 DISTRIBUTED WINDINGS IN AC MACHINERY 53 2.1. Introduction 53 2.2. Describing Distributed Windings 54 2.3. Winding Functions 64 2.4. Air-Gap Magnetomotive Force 67 2.5. Rotating MMF 71 2.6. Flux Linkage and Inductance 73 2.7. Resistance 76 2.8. Voltage and Flux Linkage Equations for Distributed Winding Machines 77 3 REFERENCE-FRAME THEORY 86 3.1. Introduction 86 3.2. Background 87 3.3. Equations of Transformation: Change of Variables 88 3.4. Stationary Circuit Variables Transformed to the Arbitrary Reference Frame 90 3.5. Commonly Used Reference Frames 97 3.6. Transformation of a Balanced Set 98 3.7. Balanced Steady-State Phasor Relationships 99 3.8. Balanced Steady-State Voltage Equations 102 3.9. Variables Observed from Several Frames of Reference 105 3.10. Transformation Between Reference Frames 110 3.11. Specialty Transformations 111 3.12. Space-Phasor Notation 113 4 PERMANENT-MAGNET AC MACHINES 121 4.1. Introduction 121 4.2. Voltage and Torque Equations in Machine Variables 122 4.3. Voltage and Torque Equations in Rotor Reference-Frame Variables 125 4.4. Analysis of Steady-State Operation 127 4.5. Brushless dc Motor 129 4.6. Phase Shifting of Applied Voltages of a Permanent-Magnet ac Machine 134 4.7. Control of Stator Currents 138 5 SYNCHRONOUS MACHINES 142 5.1. Introduction 142 5.2. Voltage Equations in Machine Variables 143 5.3. Torque Equation in Machine Variables 149 5.4. Stator Voltage Equations in Arbitrary Reference-Frame Variables 149 5.5. Voltage Equations in Rotor Reference-Frame Variables 151 5.6. Torque Equations in Substitute Variables 157 5.7. Rotor Angle and Angle Between Rotors 158 5.8. Per Unit System 159 5.9. Analysis of Steady-State Operation 160 5.10. Stator Currents Positive Out of Machine: Synchronous Generator Operation 171 5.11. Computer Simulation 201 6 SYMMETRICAL INDUCTION MACHINES 215 6.1. Introduction 215 6.2. Voltage Equations in Machine Variables 216 6.3. Torque Equation in Machine Variables 220 6.4. Equations of Transformation for Rotor Circuits 222 6.5. Voltage Equations in Arbitrary Reference-Frame Variables 224 6.6. Torque Equation in Arbitrary Reference-Frame Variables 229 6.7. Commonly Used Reference Frames 232 6.8. Per Unit System 233 6.9. Analysis of Steady-State Operation 235 6.10. Free Acceleration Characteristics 244 6.11. Free Acceleration Characteristics Viewed from Various Reference Frames 251 6.12. Dynamic Performance During Sudden Changes in Load Torque 257 6.13. Dynamic Performance During a Three-Phase Fault at the Machine Terminals 260 6.14. Computer Simulation in the Arbitrary Reference Frame 261 7 MACHINE EQUATIONS IN OPERATIONAL IMPEDANCES AND TIME CONSTANTS 271 7.1. Introduction 271 7.2. Park s Equations in Operational Form 272 7.3. Operational Impedances and G( p) for a Synchronous Machine with Four Rotor Windings 273 7.4. Standard Synchronous Machine Reactances 276 7.5. Standard Synchronous Machine Time Constants 278 7.6. Derived Synchronous Machine Time Constants 278 7.7. Parameters from Short-Circuit Characteristics 283 7.8. Parameters from Frequency-Response Characteristics 290 8 ALTERNATIVE FORMS OF MACHINE EQUATIONS 299 8.1. Introduction 299 8.2. Machine Equations to Be Linearized 300 8.3. Linearization of Machine Equations 302 8.4. Small-Displacement Stability: Eigenvalues 308 8.5. Eigenvalues of Typical Induction Machines 309 8.6. Eigenvalues of Typical Synchronous Machines 312 8.7. Neglecting Electric Transients of Stator Voltage Equations 313 8.8. Induction Machine Performance Predicted with Stator Electric Transients Neglected 31