Table of Contents

Dedication. Introduction. Chapter 1- Variable Speed Drive Types: Speed Control, Pressure, Temperature, and Flow Control, Process Control and Automation, Traditional Variable Speed Systems, Solid State Variable Speed Controllers. Chapter 2- Electrical and Power transmission Basics: Electricity and Power Transmission, Speed, Torque, Horsepower, Power Factor, Capacitors, Inductors, Semiconductors, Frequency Bands. Chapter 3- AC Induction motor and Variable Frequency Drive Basics: AC Induction Motor Theory, AC Motor Construction, Inverter Duty Motor - NEMA MG-31, Using Nameplate and Motor Data, VFD Theory of Operation, Pulse Width Modulation, Volts Per Hertz, VFD Types: Variable Voltage (VVI), Voltage Source (VSI), Current Source (CSI), Flux Vector, Sensorless Vector, Direct Torque Control, Field Oriented Control. Chapter 4- Installation Issues Concerning Variable Frequency Drives: Control and power Wiring Methods, Harmonic Distortion/Power Quality, Overvoltage Reflection, Shaft Voltage''s and Bearing Currents, Carrier Frequency, EMI and RFI, Heat Dissipation and Enclosures. Chapter 5- Troubleshooting of Variable Frequency Drives: Proper Setup, Fault Handling, Diagnostics, troubleshooting Trees, Maintenance. Chapter 6- Metering of VFD''s: Input Waveforms, Harmonic Analysis, DC Bus, Output Voltage, Output Waveform, Power Module Testing. Chapter 7- Sizing and Selection of VFD''s: Ambient Conditions, Constant vs. Variable Torque, High Starting Torque, Multiple Motors, Closed Loop and High Performance. Chapter 8- Industrial and Commercial VFD Applications: HVAC Systems: Return and Supply Fans, Boilers, Chiller Pumps, Setpoint (PID) Control. Process Control, Automated Systems, Machines. Chapter 9- Energy Savings with Variable Frequency Drives: Efficiency, Affinity Laws, EPACT, Fan and Pump Curves. Chapter 10- Future Variable Frequency Drives: Faster Switching Transistors, 12 and 24 Pulse systems, New Technologies, Applications. Appendices: Useful Formulas, Organization Addresses, Applications. Bibliography and Suggested Further Reading. Index.

Reviews

Dedication. Introduction. Chapter 1- Variable Speed Drive Types: Speed Control, Pressure, Temperature, and Flow Control, Process Control and Automation, Traditional Variable Speed Systems, Solid State Variable Speed Controllers. Chapter 2- Electrical and Power transmission Basics: Electricity and Power Transmission, Speed, Torque, Horsepower, Power Factor, Capacitors, Inductors, Semiconductors, Frequency Bands. Chapter 3- AC Induction motor and Variable Frequency Drive Basics: AC Induction Motor Theory, AC Motor Construction, Inverter Duty Motor - NEMA MG-31, Using Nameplate and Motor Data, VFD Theory of Operation, Pulse Width Modulation, Volts Per Hertz, VFD Types: Variable Voltage (VVI), Voltage Source (VSI), Current Source (CSI), Flux Vector, Sensorless Vector, Direct Torque Control, Field Oriented Control. Chapter 4- Installation Issues Concerning Variable Frequency Drives: Control and power Wiring Methods, Harmonic Distortion/Power Quality, Overvoltage Reflection, Shaft Voltage"s and Bearing Currents, Carrier Frequency, EMI and RFI, Heat Dissipation and Enclosures. Chapter 5- Troubleshooting of Variable Frequency Drives: Proper Setup, Fault Handling, Diagnostics, troubleshooting Trees, Maintenance. Chapter 6- Metering of VFD"s: Input Waveforms, Harmonic Analysis, DC Bus, Output Voltage, Output Waveform, Power Module Testing. Chapter 7- Sizing and Selection of VFD"s: Ambient Conditions, Constant vs. Variable Torque, High Starting Torque, Multiple Motors, Closed Loop and High Performance. Chapter 8- Industrial and Commercial VFD Applications: HVAC Systems: Return and Supply Fans, Boilers, Chiller Pumps, Setpoint (PID) Control. Process Control, Automated Systems, Machines. Chapter 9- Energy Savings with Variable Frequency Drives: Efficiency, Affinity Laws, EPACT, Fan and Pump Curves. Chapter 10- Future Variable Frequency Drives: Faster Switching Transistors, 12 and 24 Pulse systems, New Technologies, Applications. Appendices: Useful Formulas, Organization Addresses, Applications. Bibliography and Suggested Further Reading. Index.