Broad-pole type square-wave three-phase brushless permanent magnet direct current motor and assembling method thereof
US8975799B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2009 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | Mar 24, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2213/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A broad-pole type square-wave three-phase brushless permanent magnet direct current motor and an assembling method thereof are disclosed. The number of magnetic poles on a rotor core is: 2P=4. The number of slots in a stator core is: Z=6. Six teeth on the stator are composed of three large teeth and three small teeth. The sum of mechanical angels of one large tooth and one small tooth is 120 degree. Electrical angles corresponding to the mechanical angles are: P* 120=240° . Three-phase concentrated windings are wound on three large teeth separately, and only one winding is arranged at each phase. The advantages of the motor are low positioning torque, simple structure, effective production cost, convenient to wind the windings, and low copper loss, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.