Method for detecting a failure in a three-phase alternator, device for detecting failures and associated computer programme
US9500709B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2014 |
| Grant date | Nov 22, 2016 |
| Priority date | — |
| Expiry date | Aug 12, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/0241
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention concerns a method for detecting a failure in a three-phase alternator connected to a three-phase rectifier bridge. The method comprises the following steps — rectifying (70) the voltages generated by the three-phase alternator; — adding (76) the rectified voltages taken at the first and second phases in order to obtain a voltage sum; — subtracting (78), from said voltage sum, twice the rectified voltage taken at the third phase, in order to obtain a voltage difference; — comparing (80) the voltage difference to a high threshold and a low threshold; — detecting (82) a failure when the voltage difference is less than said low threshold or when the voltage difference is greater than said high threshold. The invention also concerns a device for detecting failures and an associated computer programme.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.