发明申请
US20100177452A1 DC BUS CLAMP CIRCUIT TO PREVENT OVER VOLTAGE FAILURE OF ADJUSTABLE SPEED DRIVES
有权
DC BUS钳位电路，以防止可调节速度驱动器的电压故障
- 专利标题： DC BUS CLAMP CIRCUIT TO PREVENT OVER VOLTAGE FAILURE OF ADJUSTABLE SPEED DRIVES
- 专利标题（中）： DC BUS钳位电路，以防止可调节速度驱动器的电压故障
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申请号： US12354109申请日： 2009-01-15
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公开(公告)号： US20100177452A1公开(公告)日： 2010-07-15
- 发明人: Lixiang Wei , Zhijun Liu , Gary L. Skibinski
- 申请人： Lixiang Wei , Zhijun Liu , Gary L. Skibinski
- 主分类号： H02H9/04
- IPC分类号： H02H9/04
摘要：
The present invention relates to a protective circuit to provide over voltage protection for an ASD. The protective circuit provides the benefits of fewer components with lower power ratings than existing protective circuits. The protective circuit may be incorporated directly in the ASD for continuous protection or mounted externally and connected to the ASD under operating conditions that require the circuit. This flexibility for mounting the protective circuit allows the capacitor of the protective circuit to be sized either in relation to capacitive elements on the DC bus within the ASD or according to external capacitance observed at the output of the ASD. In addition, the circuit is only operative during an overvoltage condition allowing for power ratings lower than would be required for continuous operation.
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