Consideration of time sharing output pulse pattern using instantaneous space voltage vector moderation for three-phase voltage source soft-switching inverter

Masanobu Yoshida, Eiji Hiraki, Mutsuo Nakaoka

Research output: Contribution to journalArticle


In this paper, we propose a single inductor type resonant AC link snubber as a technique for introducing soft-switching PWM technology into three-phase voltage source inverters and explain its circuit operation. We then explain the suitability of instantaneous space voltage vector sinewave modulation compared to sinewave-triangle wave relative modulation as the sinewave modulation technique of the soft-switching inverter introducing this resonant AC link snubber, and propose a time sharing pulse pattern based on the operating principle of this resonant AC link snubber. Furthermore, we discuss the limits on the widths of the pulses that can be output when the time sharing pulse output method is used and the soft-switching inverter performs sinewave modulation, and the need to correct narrow output pulse widths; describe in detail the relationship between the generation principle of the correction pulse pattern and the waveform distortion; and illustrate the simulation results when the minimum pulse width is corrected. Finally, we propose a new time sharing pulse pattern that does not need the minimum pulse width correction by using the time sharing pulse pattern feature for the resonant AC link inverter and demonstrate its effectiveness from the simulation results for this output pulse pattern.

Original languageEnglish
Pages (from-to)34-40
Number of pages7
JournalElectronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi)
Issue number2
Publication statusPublished - Feb 2005
Externally publishedYes



  • Instantaneous space voltage vector sinewave modu lation
  • Minimum pulse width correction
  • Three-phase voltage soft-switching inverter
  • Time sharing output pulse pattern

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

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