发明名称 |
VOLTAGE BALANCING IN SERIES CONNECTED POWER SWITCHES |
摘要 |
A method for voltage balancing series-connected power switching devices (IGBTs) each connected in parallel with a respective diverter having controllable impedance to controllably conduct current diverted from the associated power switching device, the method comprising the step of controlling each diverter to follow a series of at least two successively higher impedance states during an OFF period of the power switching devices. The series of impedance states for each diverter comprises a first impedance and then a second, higher impedance, the first impedance occurring in response to an indication of a start of the OFF period. The first impedance state preferably occurs during a tail current of the power switching device in parallel with the respective diverter and the second or later impedance state during a leakage current of that power switching device. |
申请公布号 |
WO2016020227(A1) |
申请公布日期 |
2016.02.11 |
申请号 |
WO2015EP67325 |
申请日期 |
2015.07.29 |
申请人 |
MASCHINENFABRIK REINHAUSEN GMBH |
发明人 |
LEEDHAM, ROBERT JOHN;SNOOK, MARK |
分类号 |
H03K17/10;H03K17/082;H03K17/16 |
主分类号 |
H03K17/10 |
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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