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烏嘍牛
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樓主  發(fā)表于: 2024-09-17 22:18
正常運轉時(shí)，由于一些外部原因拖動(dòng)了轉子，假設轉子速度大于同步轉速從1 2  3到n
這期間電機的電流有哪些變化？

就比如，用變頻器異步電機電機做升降機，在降落時(shí)候，會(huì )發(fā)生降落速度太快，轉子速度超過(guò)了變頻器輸出該有的轉速。
[ 此帖被烏嘍牛在2024-09-17 22:42重新編輯 ]
草原冰狼
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1樓  發(fā)表于: 2024-09-18 09:21
你這個(gè)問(wèn)題不成立，理想狀態(tài)下異步電機的轉速是略低于同步轉速，不會(huì )超過(guò)同步轉速，在磁極對數和頻率不變的情況下，只有改變轉差率，即使轉差率為0，也就是同步轉速和異步轉速相等，這個(gè)時(shí)候成了同步發(fā)電機，你的變頻器這個(gè)時(shí)候已經(jīng)冒煙很久了

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