发明名称 |
Hybrid switch circuit |
摘要 |
A hybrid switch circuit includes a hybrid switch that couples an input conductor connected to an AC power supply to an output conductor connected to a load. The hybrid switch includes a power semiconductor in parallel with an electromagnetic relay. A control circuit turns on the hybrid switch by turning on the power semiconductor at a zero-voltage crossing of the AC voltage to provide a conductive path and then closing the relay to provide a conductive bypass path that bypasses the power semiconductor. The control circuit turns off the hybrid switch by opening the relay and subsequently turning off the power semiconductor at a zero crossing of the load current. The control circuit operates in response to at least one switch control signal that indicates whether an operating fault condition exists. |
申请公布号 |
US8614866(B2) |
申请公布日期 |
2013.12.24 |
申请号 |
US20100976432 |
申请日期 |
2010.12.22 |
申请人 |
BILLINGSLEY RICHARD J.;DAWLEY ROBERT A.;ELECTRONIC SYSTEMS PROTECTION, INC. |
发明人 |
BILLINGSLEY RICHARD J.;DAWLEY ROBERT A. |
分类号 |
H02H3/00;H02H3/08;H02H3/20;H02H7/00;H02H9/02 |
主分类号 |
H02H3/00 |
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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