Method for determining the rotary position of the rotor of an electric machine
US9257924B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Apr 13, 2012 |
| Grant date | Feb 9, 2016 |
| Priority date | — |
| Expiry date | Sep 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/187
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for determining the rotary position of the rotor of an electric machine, which includes star-connected phase conductors, wherein a measurement signal representing the rotary position of the rotor within a magnetic half-period is determined from the potential at the star point. At a measurement time a specified voltage is applied to the ends of all the phase conductors by forcing the star point to a specific potential. At a time following the measurement time a voltage that deviates from the specified voltage is applied to the ends of one of the phase conductors. Then the measurement signal is derived from the current that develops from the measurement time in a connection of the star point to the specified potential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.