发明名称 |
Method and apparatus for evaluation of insulation in variable speed motors |
摘要 |
A signal obtained from the drive input of a motor or an insulated winding is applied to a sensor that strongly rejects high frequency drive signal components yet passes discharge signal components. This allows discharge signal components to be detected in the presence of harmonics of the drive signal. The voltage of the drive signal may be varied so that the lowest drive signal voltage producing a discharge event may be determined. That voltage is the motor or winding's corona inception voltage.
|
申请公布号 |
US6573727(B2) |
申请公布日期 |
2003.06.03 |
申请号 |
US20010681141 |
申请日期 |
2001.01.25 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
KRAHN JOHN RAYMOND;FEIST THOMAS PAUL |
分类号 |
G01R31/34;(IPC1-7):H01H33/00;G01R31/12 |
主分类号 |
G01R31/34 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|