3PS465.9---3PS465.9
---在相控整流電路中，若設交流電壓和電流基波分量之間的相位角為j，如忽略換流重疊角，在相控角為a時，整流裝置的相位移系數cosj與相控角a間有如下關系式：：張亮（工程師） 專線：
24小時移動專線： 【】
cosj = cosa
交－交變頻器的輸出電壓既然由各段相控整流電壓組成，因此cosj不高，而且cosa越小，cosj也越小。無論輸出的負載性質如何，這種相位滯后都不可避免。圖1為不同負載功率因數角y和不同電壓降系數e時，cosj的變化規律。
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