Device for detecting the angular position of a rotor of a polyphase rotary electrical machine and rotary electrical machine containing such a device
US8078425B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2009 |
| Grant date | Dec 13, 2011 |
| Priority date | — |
| Expiry date | Aug 4, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for detecting the angular position of a rotor of a polyphase rotary electrical machine contains a stator and a plurality of magnetic field sensors (200) delivering first signals (2001-2003) representing a magnetic field. The device includes means (201) for generating, from linear combinations of the first signals, first (2010) and second (2011) sinusoidal signals, phase-shifted by a determined value φ representing an angular position of the rotor, referred to as real. The device includes means for detecting a value for an angular position of the rotor referred to as estimated (221) by locking between the real and the estimated angular positions using a feedback loop known as a “tracking” loop (214-216, 215-207). The device may relate to a polyphase rotary electrical machine containing such a device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.