Table of Contents

1 Overview
   1.1 Scope
   1.2 Purpose
2 References
3 Definitions
4 Overview of ac adjustable-speed drive systems
   4.1 Basic adjustable-speed drive system
   4.2 Principles of operation
   4.3 Synchronous motors
   4.4 Induction motors
5 Motivation for applying adjustable-speed drives
   5.1 Process efficiency
   5.2 Other benefits of ASDs
6 Drive system economic evaluations
   6.1 Data required for economic analysis
   6.2 Evaluation procedure
   6.3 Evaluation methods
7 Typical ASD applications
   7.1 Equipment applications
   7.2 Selection
   7.3 Fans and pumps
   7.4 Conveyors and crushers
8 Types of adjustable-speed drives
   8.1 DC linked converters
   8.2 Line converter circuits
   8.3 Load side converters
   8.4 Voltage source inverter drive systems
   8.5 Current source inverter ASD systems
   8.6 Comparison of ASD characteristics
9 Adjustable-speed drive configurations
   9.1 Choice of ASD
   9.2 Reliability enhancements for six-pulse systems
   9.3 Twelve-pulse ASDs
   9.4 ASDs with higher pulse numbers
   9.5 Serving multiple loads
   9.6 Selection of ASD configuration
10 Adjustable-speed drive application considerations
   10.1 Electromagnetic elements
   10.2 Converters
   10.3 DC link circuits
   10.4 Input and output filters
   10.5 Power isolating and switching devices
   10.6 Motors
11 Interactions: ASD-electrical system and ASD-motor
   11.1 Electrical power quality considerations
   11.2 Responses to system disturbance
   11.3 Short circuit contribution
   11.4 Mechanical interaction between the motor and
        driven equipment
12 Drive system specification and installation
   12.1 Interfaces
   12.2 Enclosures
   12.3 Relaying and metering
Annex A (informative) Bibliography
Annex B (informative) Derivations of an ac machine equation
                      for operation from adjustable voltage
                      and frequency sources
Annex C (informative) Sample economic evaluation
Annex D (informative) Harmonic voltage distortion factors
Annex E (informative) Harmonic heating in transformers
Annex F (informative) Sample low-voltage PWM ASD specification
Annex G (informative) Sample medium-voltage ASD specification

Abstract

Covers the application of drive systems designed for connection to power plant electrical auxiliaries systems (normally rated between 2300 V and 13,800 V). Includes drives system terminology, drive classifications, typical applications and their unique characteristics and design considerations, protection, packaging - interfaces and interactions.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Institute of Electrical & Electronics Engineers
Pages
ISBN