A composite soft-switching inverter configuration with unipolar pulsewidth modulation control

X. He, K. Sheng, B.W. Williams, Z. Qian, S.J. Finney

Research output: Contribution to journalArticle

4 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)118-126
Number of pages8
JournalIEEE Transactions on Industrial Electronics
Issue number1
Publication statusPublished - 2001



  • PWM invertors
  • bridge circuits
  • capacitors
  • inductors
  • control systems
  • switching circuits

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