Title :
A Simple Digitally Controlled Three-Phase PWM Inverter using Turn-Off Thyristors
Author :
Oguchi, Kuniomi ; Osawa, Takashi
Author_Institution :
Department of Electrical Engineering, Ibaraki University, 4-12-1 Nakanarusawa Machi, Hitachi, Japan.
Abstract :
A new pulsewidth-modulation method for a three-phase inverter is proposed. The method offers the advantages of a much simpler control logic circuitry and relatively high-quality waveforms of the output voltage. The use of high-power turn-off thyristors allows simplification of the power circuit construction and a reduction in size. The experiments using turn-off thyristors with a rating of 1200 V and 50 A show that both improved waveforms of the output current and high efficiency can be obtained. The details of the control circuits and the driver circuits of the turn-off thyristors are also presented.
Keywords :
Digital control; Driver circuits; Logic circuits; Pulse circuits; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Space vector pulse width modulation; Thyristors; Voltage control;
Journal_Title :
Industrial Electronics and Control Instrumentation, IEEE Transactions on
DOI :
10.1109/TIECI.1981.351049
