Title :
A composite soft-switching inverter configuration with unipolar pulsewidth modulation control
Author :
He, Xiangning ; Sheng, Kuang ; Williams, Barry W. ; Qian, Zhaoming ; Finney, Stephen J.
Author_Institution :
Dept. of Electr. Eng., Zhejiang Univ., Hangzhou, China
fDate :
2/1/2001 12:00:00 AM
Abstract :
This paper presents a new composite soft-switching configuration for single-phase inverters where power bridge leg modules are used. The presented configuration consists of only one inductor and one capacitor as well as two low-power-rated switches/diodes for full-bridge circuits. It can realize snubber functions and/or resonant zero-current switching at any load current for switches in power inverters with unipolar sinusoid pulse width modulation control. The idea presented here is that soft-switching processes at turn-on and turn-off for each active switch in inverters can be different. The detailed circuit operational processes, simulation waveforms, and experimental results are included
Keywords :
PWM invertors; bridge circuits; capacitors; inductors; switching circuits; ZCS; capacitor; circuit operational processes; composite soft-switching inverter; full-bridge circuits; inductor; load current; low-power-rated diodes; low-power-rated switches; power bridge leg modules; resonant zero-current switching; simulation waveforms; single-phase inverters; snubber functions; soft-switching processes; turn-off; turn-on; unipolar pulsewidth modulation control; unipolar sinusoid pulse width modulation control; Bridge circuits; Diodes; Inductors; Leg; Pulse width modulation inverters; Resonance; Snubbers; Switched capacitor circuits; Switches; Switching circuits;
Journal_Title :
Industrial Electronics, IEEE Transactions on
