パッシブ補助共振スナバ付ソフトスイッチングPWM昇圧チョッパ形DC-DCコンバータと性能評価

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  • A Soft-Switching PWM Boost Chopper Controlled DC-DC Converter with A Single Passive Auxiliary Resonant Snubber and Its Performance Evaluations
  • パッシブ ホジョ キョウシン スナバ ツキ ソフトスイッチング PWMショウアツ チョッパケイ DC DC コンバータ ト セイノウ ヒョウカ

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This paper presents an efficient high-frequency soft switching PWM boost chopper controlled DC-DC power converter with a single auxiliary passive resonant snubber, which is more suitable and acceptable for high power applications. The proposed boost chopper type power converter capable of operating under soft commutation principles of series inductor-assisted Zero Current Soft Switching (ZCS) at turn-on transition and parallel capacitor-assisted Zero Voltage Soft Switching (ZVS) at turn-off transition is more effective to reduce switching power losses of an active power switch and EMI noises relating to switching surges on the basis of the DC load side power recovery feedback power processing. The operating principle of soft switching boost chopper type DC-DC power converter treated here is described and its performance evaluations are discussed and evaluated through simulation and experimental set-up for 5kW power rating specification. The validity and effectiveness of this soft switching PWM boost type power converter using IGBTs are proved as compared with some performances of a hard switching boost chopper type power converter from an experimental point of view. The modified soft switching converter topologies using a single passive resonant snubber are demonstrated in here.

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