DSQC355A 控制变频器

67ZA030MXXXC00
MPS-B310P-M-X183
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CIMR-JT4A0005BAA
CIMR-MR5N2015
2TLA010025R0000
ABB-086329-004
3BHB000272R0101
PFEA111-20-3BSE050090R20
PM3326B-6-1-2-E
PM860

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描述

频率下降时电压V也成比例下降,这个问题已在回答4说明。保持V/f比恒定控制是异步电机变频调速的最基本的控制方式,它在控制电机的电源频率变化的同时控制变频器输出的电压,并使二者之比V/f为恒定,从而使电机的磁通保持恒定。在电机额定运行情况下,电机的定子电阻和漏抗的电压降比较小,电机的端电压和电机的感应电势近似相等。

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