品牌:ABB | 規格:DSDO120 | 材質:DSDO120 |
產地:瑞士 |
從結構上看,由於採用了 IGBT 功率元件, 所以它相當於一個逆變器,不同的是其輸入為交流輸出為直流,因為它位於電源進線側, 所以被稱為前端。其主動的含義在於,與傳統的二級管或可控制硅整流技術相比,主動前端不再是被動地將交流轉變成直流,而是具備了很多主動的控制功能。它不僅能高次諧波,提高功率因數, 而且不受電網波動的影響, 具有的動態特性。
---- 主動前端(AFE〕整流單元的工作原理可簡述為:AFE整流單元從電網汲取正弦波交流,經整流後輸出直流電壓,並保持所要求的電壓值。各次諧波由濾波電路刪除。
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DSDO120