磁気エネルギー回生スイッチの原理を応用したソフトスイッチングアクティブ整流回路

概要

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Converters using active switches can improve the harmonic components of input current and the power factor. Moreover, the use of these converters can result in a reduction in the size of the footprint. However, the increase in switching losses and EMI due to high-frequency switching is a disadvantage of these converters. In this study, we propose a new active rectifier circuit topology that can reduce the switching losses and EMI by soft-switching operation. Almost unity fundamental power factor and practically good characteristics of input current harmonics can be achieved by employing a simple switching control method. The characteristics of the power and input current harmonics of the proposed converter are analyzed. Small-scale experiments were conducted and the operation principles and characteristics of the rectifier were determined.
社団法人電気学会の論文