Title :
A novel PWM strategy to minimize the surge voltage for current-source converters
Author :
Matsui, Keiju ; Yamaguchi, Tadashi ; Takase, Shinichi ; Yang, Yue
Author_Institution :
Dept. of Electr. Eng., Chubu Univ., Kasugai, Japan
Abstract :
This paper presents a novel technique of pulsewidth modulation (PWM) wave control to minimize the surge voltage at the turn-off of switching devices. Two kinds of sawtooth carriers with different hypotenuses are employed to obtain a PWM waveform with minimum surge voltage, where each sawtooth carrier appears alternately at every 60° interval relative to the sinusoidal wave cycle. It is difficult to analyze the output waveforms because they are complicated. In order to obtain the analytical result, a frequency analysis approach using a switching function is proposed the results of which are verified experimentally
Keywords :
PWM power convertors; harmonic distortion; minimisation; power system harmonics; surges; switching circuits; waveform analysis; PWM strategy; current-source power converters; frequency analysis approach; output waveforms analysis; pulsewidth modulation waveform control; sawtooth carriers; sinusoidal wave cycle; surge voltage minimisation; switching device turn-off; switching function; Circuits; Frequency; Harmonic analysis; Power semiconductor switches; Power system harmonics; Pulse width modulation; Pulse width modulation converters; Surges; Switching converters; Voltage control;
Journal_Title :
Industry Applications, IEEE Transactions on
