Introduction to the Analysis of Electromechanical Systems

ISBN-13: 9781119829997 / Angielski / Twarda / 2021 / 256 str.

Paul C. Krause; Oleg Wasynczuk; Timothy O'Connell

Spis treści

Preface ixAbout the Authors xi1 Basic System Analysis 11.1 Introduction 11.2 Phasor Analysis and Power Calculations 11.2.1 Power and Reactive Power 61.3 Elementary Magnetic Circuits 81.3.1 Field Energy and Coenergy 121.4 Stationary Coupled Circuits - The Transformer 161.4.1 Magnetically Linear Transformer 171.4.2 Field Energy 201.5 Two- and Three-phase Systems 231.5.1 Two-phase Systems 231.5.2 Three-phase Systems 251.6 Problems 292 Fundamentals of Electric Machine Analysis 312.1 Introduction 312.2 Coupled Circuits in Relative Motion 322.2.1 Field Energy 352.3 Electromagnetic Force and Torque 362.4 Winding Configurations 422.4.1 Concentrated Winding 422.4.2 Distributed Windings 462.5 Rotating Air-gap mmf - Tesla's Rotating Magnetic Field 492.5.1 Two-pole Two-phase Stator 502.5.2 Three-phase Stator 552.6 Change of Variables 572.6.1 Two-phase Transformation 572.6.2 Three-phase Transformation 592.7 Stator Voltage Equations in Arbitrary Reference Frame 612.8 Instantaneous and Steady-state Phasors 632.9 P-pole Machines 652.10 Problems 70References 723 Electric Machines 733.1 Introduction 733.2 Direct-current Machine 733.2.1 Commutation 743.2.2 Voltage and Torque Equations 773.2.3 Permanent-magnet dc Machine 793.3 Permanent-magnet ac Machine 823.3.1 Two-phase Permanent-magnet ac Machine 823.3.2 Reference Frame Analysis of a Permanent-magnet ac Machine 863.3.3 Three-phase Permanent-magnet ac Machine 903.3.4 Steady-state Analysis 903.4 Symmetrical Induction Machines 953.4.1 Two-phase Induction Machine 963.4.2 Symmetrical Rotor Windings 983.4.3 Substitute Variables for Symmetrical Rotating Circuits 1013.4.4 Torque 1053.4.5 Phasors and Steady-state Equivalent Circuit 1083.5 Problems 115References 1174 Power Electronics 1194.1 Introduction 1194.2 Switching-circuit Fundamentals 1204.2.1 Power Conversion Principles 1204.2.2 Switches and Switching Functions 1214.2.3 Energy Storage Elements 1254.3 dc-dc Conversion 1274.3.1 Buck Converter 1274.3.2 Boost Converter 1374.3.3 Advanced Circuit Topologies 1414.4 ac-dc Conversion 1414.4.1 Half-wave Rectifier 1414.4.2 Full-wave Rectifier 1484.5 dc-ac Conversion 1564.5.1 Single-phase Inverter 1564.6 Problems 160References 1635 Electric Drives 1655.1 Introduction 1655.2 dc Drive 1655.2.1 Average-value Time-domain Block Diagram 1685.2.2 Torque Control 1705.3 Brushless dc Drive 1725.3.1 Operation of Brushless dc Drive with Phi V = 0 1755.3.2 Torque Control 1775.4 Induction Motor Drive 1825.4.1 Torque Control 1875.5 Problems 191References 1916 Power Systems 1936.1 Introduction 1936.2 Three-phase Transformer Connections 1936.2.1 Wye-Wye Connection 1946.2.2 Delta-Delta Connection 1966.2.3 Wye-Delta or Delta-Wye Connection 1976.2.4 Ideal Transformers 1986.3 Synchronous Generator 2006.3.1 Damper Windings 2046.3.2 Torque 2056.3.3 Steady-state Operation and Rotor Angle 2066.4 Reactive Power and Power-Factor Correction 2126.5 Per Unit System 2186.6 Discussion of Transient Stability 2216.6.1 Three-phase Fault 2226.7 Problems 226References 227Appendix A Abbreviations, Constants, Conversions, and Identities 229Index 233

O autorze

Paul C. Krause, PhD, retired after 39 years as a professor at Purdue University School of Electrical and Computer Engineering. He founded P.C. Krause & Associates in 1983. He is a Life Fellow of IEEE and has authored or co-authored over 100 technical papers and five textbooks on electric machines. He was the 2010 recipient of the IEEE Nikola Tesla Award. He and the co-authors are also co-authors of Electromechanical Motion Devices: Rotating Magnetic Field-Based Analysis with Online Animations, 3rd Edition.Oleg Wasynczuk, PhD, is Professor of Electrical and Computer Engineering at Purdue University. He has authored or co-authored over 100 technical papers and four textbooks on electric machines. He is a Fellow of IEEE and was the 2008 recipient of the IEEE Cyril Veinott Award. He also serves as Chief Technical Officer of P.C. Krause & Associates.Timothy O'Connell, PhD, is a Senior Lead Engineer at P.C. Krause & Associates and an Adjunct Research Assistant Professor of Electrical and Computer Engineering at the University of Illinois at Urbana-Champaign. He is a Senior Member of IEEE and an Associate Editor of the IEEE Transactions on Aerospace and Electronic Systems. He has authored or co-authored over 20 technical papers and three textbooks on electric machines and has co-edited a book on electrified aircraft propulsion.