发明名称 |
OVER-VOLTAGE PROTECTION FOR VOLTAGE REGULATOR MODULES OF A PARALLEL POWER SYSTEM |
摘要 |
A protection circuit for a parallel power system having at least two parallel coupled voltage regulators is disclosed. The protection circuit includes at least two isolation control circuits, each control circuit being coupled to a respective voltage regulator. Each isolation control circuit includes a current sense circuit for sensing current polarity at an output of the respective voltage regulator, and a controller for automatically isolating the respective voltage regulator when an over-voltage condition exists at an output of the parallel power system and a positive current polarity is sensed at the output of the respective voltage regulator. The at least two isolation control circuits isolate only a voltage regulator having positive current outflow during the over-voltage condition. In one embodiment, each isolation control circuit further includes an over-voltage detection circuit for detecting when the over-voltage condition exists at the output of the parallel power system.
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申请公布号 |
US2007279813(A1) |
申请公布日期 |
2007.12.06 |
申请号 |
US20070769242 |
申请日期 |
2007.06.27 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
COVI KEVIN R.;HARRINGTON RAYMOND J.;MAKOWICKI ROBERT P.;SHEVACH STEVEN G.;SORESON DALE F.;TUCKER BRAIN C. |
分类号 |
H02H3/20 |
主分类号 |
H02H3/20 |
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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