Performance Evaluations of A Single Inductor Type Resonant AC Link Snubber-Assisted Three-Phase Voltage Source Soft-Switching Inverter

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  • Yoshida Masanobu
    Faculty of Engineering, Department of Electrical and Electronics Engineering, Yamaguchi University
  • Hiraki Eiji
    Faculty of Engineering, Department of Electrical and Electronics Engineering, Yamaguchi University
  • Nakaoka Mutsuo
    Faculty of Engineering, Department of Electrical and Electronics Engineering, Yamaguchi University

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Other Title
  • 一括インダクタ形共振ＡＣリンクスナバを用いた三相電圧形ソフトスイッチングインバータの性能評価
  • イッカツ インダクタケイ キョウシン AC リンクスナバ オ モチイタ 3ソウ デンアツケイ ソフトスイッチングインバータ ノ セイノウ ヒョウカ

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Abstract

This paper presents a novel three-phase voltage source type soft-switching inverter using the main and auxiliary IGBT power module packages in order to reduce their switching power losses as well as its electromagnetic noises. A single inductor-assisted resonant AC link snubber circuit as one of some resonant snubbers to achieve the zero voltage soft-switching for the three-phase voltage source inverter (VSI) with instantaneous space voltage vector sinewave modulation strategy is originally demonstrated as compared with the other resonant AC link snubber circuit topologies. In addition to this, its operation principle and unique features are described in this paper for resistive and inductive loads. Furthermore, the practical basic operating performances of the new instananeous space vector modulated soft-switching VSI using IGBT power modules are evaluated and discussed on the basis of power conversion efficiency and electromagnetic conductive and radiative noises from an experimental point of view, as compared with those of hard-switching VSI.

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