发明名称 |
Variable frequency drive and methods for filter capacitor fault detection |
摘要 |
Variable frequency motor drives and control techniques are presented in which filter capacitor faults are detected by measuring filter neutral node current and/or voltages and detecting changes in the fundamental frequency component of the measured neutral condition at the fundamental frequency of the input power and/or based on input current unbalance. |
申请公布号 |
EP2390997(A3) |
申请公布日期 |
2016.12.14 |
申请号 |
EP20110167783 |
申请日期 |
2011.05.27 |
申请人 |
Rockwell Automation Technologies, Inc. |
发明人 |
Xiao, Yuan;Zargari, Navid;Pande, Manish;Khatri, Vijay |
分类号 |
H02M5/451;G01R31/02;G01R31/42;H02M1/12;H02M1/32;H02M5/45;H02M5/458;H02M7/525;H02M7/539 |
主分类号 |
H02M5/451 |
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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