发明名称 |
Slip control based on sensing voltage fed to an induction motor |
摘要 |
An electronic motor drive for vector control of an induction motor controls slip and operating frequency in response to changes in stator voltage. The drive includes a torque control loop, a flux control loop and a frequency control loop which includes slip control in response to a voltage difference. In the constant horsepower range, above base speed, slip is controlled in response to an error between a d-axis reference voltage that is sampled at base speed and a d-axis feedback voltage that is sensed when the motor is operating above base speeed. Flux-weakening is provided in response to an error between a q-axis reference voltage that is sensed when the motor is operating at base speed and a q-axis feedback voltage that is sensed when the motor is operating above speed.
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申请公布号 |
US5032771(A) |
申请公布日期 |
1991.07.16 |
申请号 |
US19900565288 |
申请日期 |
1990.08.09 |
申请人 |
ALLEN-BRADLEY COMPANY, INC. |
发明人 |
KERKMAN, RUSSEL J.;ROWAN, TIMOTHY M. |
分类号 |
H02P21/08 |
主分类号 |
H02P21/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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