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有緣1982
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樓主  發(fā)表于: 2010-06-06 09:04
50hz以下做恒轉矩調速,50hz以上做恒功率調速。這個(gè)是針對所有變頻器嗎?
變頻電機的電壓380v,頻率50hz,但上面標著(zhù)    恒轉矩頻率范圍3-50hz,恒功率頻率范圍50-100hz   他這個(gè)意思是說(shuō)恒功率調速時(shí)頻率可以最高運行到100hz嗎?假如是這樣,那不是超過(guò)電機的額定頻率了嗎?
變頻器做vf控制時(shí),轉矩和頻率成正比,那恒轉矩如何控制?
變頻器怎么知道是不是通用型?
fom
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1樓  發(fā)表于: 2010-06-06 19:35
這是個(gè)針對變頻電機的,說(shuō)的不是普通的電機。

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