Title :
Waveform Distortion and Correction Circuit for PWM Inverters with Switching Lag-Times
Author :
Murai, Yoshihiro ; Watanabe, Tomofumi ; Iwasaki, Harumitu
Author_Institution :
Department of Electrical Engineering, Gifu University, Yanagido 1-1, Gifu 501-11, Japan.
Abstract :
The switching lag-time that prevents the phase shortage of inverter arms causes serious waveform distortions and fundamental voltage drops in pulsewidth-modulated inverter output. Distortions in the PWM inverter-fed induction motor system over the various frequencies of the carrier are investigated and a correction circuit with PWM potential feedback is proposed; the effectiveness of that circuit is shown by experiments.
Keywords :
Feedback circuits; Frequency; Induction motors; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Signal generators; Switching circuits; Thyristors; Voltage;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.1987.4504998
