Method for detecting a short circuit in a synchronous machine fitted with an angular position sensor
US9906185B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 16, 2015 |
| Grant date | Feb 27, 2018 |
| Priority date | — |
| Expiry date | Feb 16, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/0241
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method for detecting a short circuit between the phases of a polyphase synchronous machine (1) comprising a stator (2) and a rotor (3), said machine being fitted with at least one angular position sensor (1a) of the rotor (3), the rotor (3) comprising means for generating a magnetic induction provided to move said rotor around the stator (2), the angular position sensor (1a) comprising at least two magnetic induction measurement sensors (6), the induction measurement sensors (6) extending to an axial end (3a) of the rotor (3), facing and immediately adjacent to the axial edges (4a) of the means for generating a magnetic induction, characterized in that said method consists of: i1) using the values measured and supplied by the induction measurement sensors, i2) calculating the gradient of the curve of the measured values as a function of time, i3) comparing the calculated gradient with a threshold value, Vs, and i4) if the calculated gradient is greater than or equal to the threshold value, Vs, generating a warning signal, S, using an electronic unit and, if this is not the case, returning to step i1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.