Axial air gap brushless motor with layered disk stator
US5789841A · kind A · utility
44Cited by
15References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 2, 1996 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | May 2, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K21/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An axial airgap brushless motor including a rotor having a plurality of permanent magnet poles, and a stator having a plurality of conductor layers and a connecting layer for connecting the conductor layers. The motor is operated by exciting the conducting layers with three phase electric current. The current gives rise to conductor magnetic fields which interact with the rotating magnetic field of the permanent magnets. The magnets are spaced relative to one another to minimize the odd harmonics to thereby minimize torque ripple.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.