ソフトスイッチング三相一石昇圧形コンバータ

概要

論文の詳細を見る
In most power electronic applications, the AC power input provided by the electric utility needs to be first converted to a DC voltage. Such conversion is usually accomplished by a diode rectifier due to its circuit simplicity and low cost. However, since diode rectifiers have some intrinsic problems such as low power factor and high harmonic distortion, a wide use of such rectifiers may cause noises, malfunction and heat damage in both electrical power systems and electrical machinery systems. This paper proposes a soft switched three-phase single switch boost-type rectifier. The proposed circuit can perform zero-voltage-switching (ZVS) without using any current and voltage sensors. For this circuit, both simulation and experiments have been performed. The results not only confirmed the zero-voltage-switching (ZVS) but also indicated that, compared to the conventional hard-switched rectifier, the proposed circuit can improve the efficiency as much as 1.7 to 4.7pt while keeping the same high power factor and small harmonic distortion in their AC input.
社団法人電気学会の論文
2003-03-01