发明授权
- 专利标题： Variable frequency drive and methods for filter capacitor fault detection
- 专利标题（中）： 变频器和滤波电容故障检测方法
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申请号： US13532906申请日： 2012-06-26
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公开(公告)号： US08937796B2公开(公告)日： 2015-01-20
- 发明人: Yuan Xiao , Navid Zargari , Manish Pande , Vijay Khatri
- 申请人： Yuan Xiao , Navid Zargari , Manish Pande , Vijay Khatri
- 申请人地址： US OH Mayfield Heights
- 专利权人： Rockwell Automation Technologies, Inc.
- 当前专利权人： Rockwell Automation Technologies, Inc.
- 当前专利权人地址： US OH Mayfield Heights
- 代理机构： Fay Sharpe LLP
- 主分类号： H02H3/00
- IPC分类号： H02H3/00 ; H02M5/451 ; H02M1/32 ; H02M5/458 ; H02M7/525 ; H02M7/539 ; H02J3/00 ; H02J3/36 ; H02M5/40 ; H02M7/06
摘要：
Variable frequency motor drives and control techniques are presented in which filter capacitor faults are detected by measuring filter neutral node currents and/or voltages and detecting changes in a frequency component of the measured neutral condition and/or based on input current unbalance.
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