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mnbjkl
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樓主  發(fā)表于: 2011-11-24 16:46
相同功率的電機，電機極數不同，在額定轉速下，誰(shuí)輸出轉矩大？例如都是11KW電機，一個(gè)4極，一個(gè)8極，在其額定轉速下，誰(shuí)的力矩大。有沒(méi)計算公式，好像是8極的力矩大，電流有什么不同？
shenyijin
中級電工
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1樓  發(fā)表于: 2011-11-24 19:33
轉速公式：n＝60f/P
(n＝轉速，f＝電源頻率，P＝磁極對數)
扭矩公式：T=9550P/n
      T是扭矩，單位N•m
      P是輸出功率，單位KW
      n是電機轉速，單位r/min

扭矩公式：T=973P/n
     T是扭矩，單位Kg•m
     P是輸出功率，單位KW
     n是電機轉速，單位r/min
看看公式不就知道了

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