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zzydegong
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樓主  發(fā)表于: 2009-11-28 20:51
       今天在做電工技師論文答辯時(shí)，考評老師問(wèn)了這樣的一個(gè)問(wèn)題：“有沒(méi)有這樣的的負載：用異步電機變頻驅動(dòng)時(shí)，頻率由50HZ降到10HZ時(shí)它的輸入功率不變”在我的印象里好像沒(méi)有這樣的負載。請大家給一個(gè)明確的答復：有或者沒(méi)有，如果有請舉例。
黃猛
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1樓  發(fā)表于: 2009-11-29 09:31
變頻器有恒功率調速得嘛

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