发明名称 |
System and method for detecting phase loss and diagnosing DC link capacitor health in an adjustable speed drive |
摘要 |
A system and method for detecting input phase loss in an adjustable speed drive (ASD) includes an input unit to detect operating data from the ASD. The operating data includes a DC link current of the ASD. The system also includes a state observer that is adapted to receive the operating data from the input unit and extract a DC link capacitor current of the ASD using the DC link current. The system also includes a controller programmed to compare the extracted DC link capacitor current to a predetermined fault range and generate a fault indication of an input phase loss if the extracted DC link capacitor current is within the predefined fault range. The controller is also programmed to calculate an estimated lifespan of the DC link capacitor based on the extracted DC link capacitor current. |
申请公布号 |
AU2012352637(A1) |
申请公布日期 |
2014.05.15 |
申请号 |
AU20120352637 |
申请日期 |
2012.12.06 |
申请人 |
EATON CORPORATION |
发明人 |
LI, HUAQIANG |
分类号 |
G05B13/04;H02M5/458;H02P23/12 |
主分类号 |
G05B13/04 |
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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