Analysis of PWM GTO Current Source Inverter-Fed Induction Motor Drive System

Author

Nonaka, Sakutaro ; Neba, Yasuhiko

Author_Institution

Department of Electrical Engineering, Faculty of Engineering, Kyushu University 36, Hakozaki, Fukuoka, 812, Japan.

Issue

2

fYear

1987

fDate

3/1/1987 12:00:00 AM

Firstpage

256

Lastpage

262

Abstract

A GTO current source inverter which consists of six main GTO´s, two auxiliary GTO´s, and three capacitors is presented. This inverter can supply both the sinusoidal voltage and current to the motor by pulsewidth modulation (PWM) techniques. The normal PWM pattern produced by two control signals with the carrier and the modulating waves and the optimal PWM pattern determined by the harmonic analysis are described. The experimental waveforms for 2.2-kW induction motor drives are given and the circuit operation of this inverter in the PWM technique is clearly shown. In addition, the steady-state characteristics of this inverter-induction motor drive system are analyzed by the state-variable methods, and a close agreement between the analyzed and the experimental waveforms is obtained. It is shown that the harmonic components are eliminated or reduced by using the optimal PWM pattern, and the new inverter with sinusoidal current and voltage is very excellent for ac motor drive.

Keywords

AC motors; Capacitors; Circuits; Harmonic analysis; Induction motor drives; Optimal control; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Voltage;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.1987.4504900

Filename

4504900