Practical Variable Speed Drives and Power Electronics (Practical Professional Books from Elsevier)Author: Malcolm Barnes
Typical practical applications of VSDs in process control and materials handling, such as those for pumping, ventilation, conveyers, compressors and hoists are covered in detail.
* Chapter 1. Introduction o 1.1 The need for variable speed drives o 1.2 Fundamental principles o 1.3 Torque-speed curves for variable speed drives o 1.4 Types of variable speed drives o 1.5 Mechanical variable speed drive methods o 1.6 Hydraulic variable speed drives methods o 1.7 Electromagnetic or Eddy Current coupling o 1.8 Electrical variable speed drive methods * Chapter 2. 3-Phase AC induction motors o 2.1 Introduction o 2.2 Basic construction o 2.3 Principles of operation o 2.4 The equivalent circuit o 2.5 Electrical and mechanical performance o 2.6 Motor acceleration o 2.7 AC induction generator performance o 2.8 Efficiency of electric motors o 2.9 Rating of AC induction motors o 2.10 Electric motor duty cycles o 2.11 Cooling and ventilation of electric motors (IC) o 2.12 Degree of protection of motor enclosures (IP) o 2.13 Construction and mounting of AC induction motors o 2.14 Anti-condensation heaters o 2.15 Methods of starting AC induction motors o 2.16 Motor selection * Chapter 3. Power electronic converters o 3.1 Introduction o 3.2 Definitions o 3.3 Power diodes o 3.4 Power thyristors o 3.5 Commutation o 3.6 Power electronic rectifiers (AC/DC converters) o 3.7 Gate commutated inverters (DC/AC converters) o 3.8 Gate controlled power electronic devices o 3.9 Other pwoer converter circuit components * Chapter 4. Electromagnetic compatibility (EMC) o 4.1 Introduction o 4.2 The sources of electromagnetic interference o 4.3 Harmonics generated on the supply side of AC converters o 4.4 Power factor and displacement factor o 4.5 Voltages and current on the motor side of PWM inverters * Chapter 5. Protection of AC converters and motors o 5.1 Introduction o 5.2 AC frequency converter protection circuits o 5.3 Operator information and fault diagnostics o 5.4 Electric motor protection o 5.5 Thermal overload protection current sensors o 5.6 Thermal overload protection direct temperature sensing * Chapter 6. Control systems for AC variable speed drives o 6.1 The overall control system o 6.2 Power supply to the control system o 6.3 The DC bus charging control system o 6.4 The PWM rectifier for AC converters o 6.5 Variable speed drive control loops o 6.6 Vector control for AC drives o 6.7 Current feedback in AC variable speed drives o 6.8 Speed feedback from the motor * Chapter 7. Selection of AC converters o 7.1 Introduction o 7.2 The basic selection procedure o 7.3 The loadability of converter fed squirrel cage motors o 7.4 Operation in the constant power region o 7.5 The nature of the machine load o 7.6 The requirements for starting o 7.7 The requirements for stopping o 7.8 Control of speed, torque and accuracy o 7.9 Selecting the correct size of motor and converter o 7.10 Summary of the selection procedures * Chapter 8. Installation and commissioning o 8.1 General installation and environmental requirements o 8.2 Power supply connection and earthing requirements o 8.3 Start/stop control of AC drives o 8.4 Installing AC converters into ****l enclosures o 8.5 Control wiring for variable speed drives o 8.6 Commissioning variable speed drives * Chapter 9. Special topics and new developments o 9.1 Soft-switching o 9.2 The matrix converter * Appendix A: Motor protection direct temperature sensing o A.1 Introduction o A.2 Microtherm (thermostat) o A.3 Thermistor sensors and thermistor protection relays o A.4 Thermocouple o A.5 Resistance temperature detector (RTD) * Appendix B: Current measurement transducers o B.1 Current shunt o B.2 Principle of the Hall effect sensor * Appendix C: Speed measurement transducers o C.1 Analog speed transducers o C.2 Digital rotary speed and position transducers * Appendix D: International and national standards o D.1 Introduction o D.2 International standards o D.3 European standards o D.4 United States of America standards o D.5 National standards o D.6 South African standards * Appendix E: Glossary of common terms used with AC variable speed drives * Index
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