发明名称 |
METHOD OF TESTING PARTIAL DISCHARGE OF ROTATING ELECTRICAL MACHINE DRIVEN BY INVERTER |
摘要 |
In a rotating electrical machine, a conductive foil or conductive rubber is applied to the surface of insulation layer of a conductor series connection area or to the surface of insulation layer of a turn conductor of coils of rotating electrical machine winding, waveforms of grounding voltages of the individual turn conductor portions are measured through the medium of an electrostatic capacitance of the insulation layer of coil conductor series connection area or through the medium of the insulation layer of coil turn conductor, and a partial discharge is measured while measuring a voltage developing in the coil or across a winding turn in the coil from a difference between the waveforms of grounding voltages. |
申请公布号 |
US2012182040(A1) |
申请公布日期 |
2012.07.19 |
申请号 |
US201213353628 |
申请日期 |
2012.01.19 |
申请人 |
OBATA KOJI;HIGASHIMURA YUTAKA;SUZUKI KEIJI;HITACHI, LTD. |
发明人 |
OBATA KOJI;HIGASHIMURA YUTAKA;SUZUKI KEIJI |
分类号 |
G01R31/34 |
主分类号 |
G01R31/34 |
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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