Determining rotor position offset for electrical machines
US11973444B2 · kind B2 · utility
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3References
15Claims
0Family size
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Key dates
| Filing date | Jul 27, 2022 |
| Grant date | Apr 30, 2024 |
| Priority date | — |
| Expiry date | Jan 18, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2203/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of calibrating an electrical machine to determine an angular offset between a motor sensor indicated position and an actual rotor position, including the steps of: supplying electrical current to stator windings; identifying a quadrant of a rotor where a rotor pole is located; approximating a line between a torque value measured at a lower angular boundary of the identified quadrant and a torque value measured at an upper angular boundary of the identified quadrant; and determining an angular offset by locating an angular position where torque exerted by the rotor is zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.