Inferior permanent magnet electric motor and rotor included therein
US11581765B2 · kind B2 · utility
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1References
14Claims
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Key dates
| Filing date | Sep 10, 2019 |
| Grant date | Feb 14, 2023 |
| Priority date | — |
| Expiry date | Sep 10, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2201/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An interior permanent magnet electric motor forms a buried angle of a left permanent magnet of a slot part of a rotor differently from a buried angle of a right permanent magnet of the slot part of the rotor, so as to reduce torque ripple while sufficiently maintaining motor efficiency as compared to an I-type rotor to effectively improve noise, vibration, and harshness performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.