发明名称 |
Synchronous motor protection |
摘要 |
A digital controller for synchronous motors prevents excessive heating of squirrel cage windings during motor starting. It reduces motor excitation if the actual accrued excitation time exceeds the maximum allowable excitation time of the controlled motor. It provides for adjustment of allowable time responsive to changes in excitation voltage. The thermal characteristic of the controlled motor is automatically derived from merely a few manually entered set point values.
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申请公布号 |
US4683411(A) |
申请公布日期 |
1987.07.28 |
申请号 |
US19860902940 |
申请日期 |
1986.09.02 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
HAMILTON, JR., JAMES W.;LONG, EDWARD A. |
分类号 |
H02H7/08;H02P1/46;(IPC1-7):H02P5/40 |
主分类号 |
H02H7/08 |
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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