直接形電力用周波数変換回路の力率改善方式

概要

論文の詳細を見る
The naturally commutation type tripler is formed of the selected end segments of a third input voltage waves, therefore the input power factor is low as a matter of course. In regard to the power factor correction methods, it approaches by means of either on/off compensated power capacitors or forced turn-off methods with that fundmental power factor is unity. This paper is described that power factors are calculated on the several type triplers and are compared with the merits or the defects. Consequently, the forced turn-off type tripler that is formed of the center segments of a third input voltage waves, indicates obviously the fact that includes much fundamental component and has high power factor. In the case of the power factor correction on the natural commutated tripler, a micro computer cotrol is necessary in order to connect or disconnect shunt proper capacltors.