Electric Drives: Design Methodology

Chapter 1. Introduction Electric Drive Components1 1.1. Definition 1 1.2. Electric drive components 2 Chapter 2. Driven Bodies 5 2.1. Function of the driven body 5 2.2. Reference or rated running 5 2.3. Transient behavior 6 2.4. Specifications 7 Chapter 3. Transmission 15 3.1. Transmission types and characterization 15 3.2. Resolution 20 3.3. Speed adaptation 22 3.4. Dynamic behavior 23 3.5. Oscillatory torque 31 3.6. Position transfer 36 Chapter 4. Motors 41 4.1. Characterization 41 4.2. Rotating and linear motors 42 4.3. Induction motors 42 4.4. DC motors 54 4.5. Synchronous motors 62 4.6. Variable reluctance motors 73 4.7. Linear motors 75 4.8. Piezoelectric motors and actuators 81 4.9. Appendix BLDC motor characteristics 85 Chapter 5. Motors: Characterization 87 5.1. Characteristics 87 5.2. Scaling laws 89 5.3. Parametric expression 96 Chapter 6. Global Design of an Electric Drive 101 6.1. Introduction 101 6.2. Dynamic equations 102 6.3. Example 107 6.4. Conclusions 117 Chapter 7. Heating and Thermal Limits 119 7.1. Heating importance 119 7.2. Thermal equations 120 7.3. Energy dissipated at start-up 126 7.4. Cooling modes 130 Chapter 8. Electrical Peripherals 137 8.1. Adaptation 137 8.2. Sources 137 8.3. Voltage adjustment 138 8.4. Current adjustment devices 143 Chapter 9. Electronic Peripherals 149 9.1. Power electronic 149 9.2. Simple switch 150 9.3. H bridge 151 9.4. Element bridge 154 Chapter 10. Sensors 159 10.1. Functions and types 159 10.2. Optical position sensors 161 10.3. Hall sensors 163 10.4. Inductive position sensors 164 10.5. Resolver-type rotating, inductive, contactless sensors168 10.6. Other position sensors 170 10.7. The motor as a position sensor 175 10.8. Sensor position 179 10.9. Current sensors 181 10.10. Protection sensors 183 Chapter 11. Direct Drives 187 11.1. Performance limits 187 11.2. Motor with external rotor 200 11.3. Example 203 Chapter 12. Integrated Drives 207 12.1. Principle 207 12.2. Realization 208 Symbols 213 Indices 217 Bibliography 221 Index 223

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