Rotating electrical machine
US11239714B2 · kind B2 · utility
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2Claims
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Assignee
Inventors
Key dates
| Filing date | May 5, 2020 |
| Grant date | Feb 1, 2022 |
| Priority date | — |
| Expiry date | Jul 29, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K21/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In an IPM motor, since a first portion which is a pressed powder compact made of soft magnetic powder and has a lower magnetic permeability and a lower saturation magnetic flux density than those of a main body portion made of a laminated steel sheet is replaced and disposed in the vicinity of an inner arc side portion of a right end portion of a permanent magnet, local demagnetization is prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.