Practical Variable Speed Drives and Power Electronics


ISBN: 0750658088

Title: Practical Variable Speed Drives and Power Electronics (Practical Professional Books from Elsevier)

Author: Malcolm Barnes

Publisher: Newnes

Publication Date: 2003-07

Number Of Pages: 304

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.

Collection name: Electronics & Electrical

* Cover

* Frontmatter

o Half Title Page

o Titles in the series

o Title Page

o Copyright

o Preface

* 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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