| 发明名称 | Method and apparatus for detecting alternator rectifier diode short fault | ||
| 摘要 | Methods for detecting a short fault of an alternator rectifier electronic component include sampling a field winding voltage or current signal of an alternator, during operation of the alternator, and determining a fault ripple period at which the alternator field winding signal exceeds a fault threshold. A short fault of an electronic component of a rectifier coupled to the alternator is detected in the event that the fault ripple period closely matches an alternator armature period. Alternatively or additionally, the sampled field winding signal is band pass filtered, and a short fault is detected in the event that an amplitude of the band pass filtered field winding signal exceeds a fault threshold. The methods can be implemented, for example, by an apparatus that includes a hysteresis frequency counter, a frequency comparator, and a countdown timer. | ||
| 申请公布号 | US9431941(B1) | 申请公布日期 | 2016.08.30 |
| 申请号 | US201514620218 | 申请日期 | 2015.02.12 |
| 申请人 | General Electric Company | 发明人 | Verma Rajeev;Worden Bret Dwayne |
| 分类号 | H02K11/00;H02P9/00;H02P9/10;H02H9/00;H02P101/45 | 主分类号 | H02K11/00 |
| 代理机构 | GE Global Patent Operation | 代理人 | GE Global Patent Operation |
| 主权项 | 1. A method comprising: sampling a field winding signal of an alternator, during operation of the alternator; determining a fault ripple period at which the field winding signal exceeds a fault threshold; and detecting a short fault of an electronic component of a rectifier coupled to an output of the alternator in the event that the fault ripple period closely matches an armature period of the alternator. | ||
| 地址 | Schenectady NY US | ||