Modified wave windings for electric motor
US9774235B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2013 |
| Grant date | Sep 26, 2017 |
| Priority date | — |
| Expiry date | Feb 8, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K23/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A permanent magnet DC motor with 2P magnetic poles, where P is an integer greater than 1, comprising a stator (100) with a plurality of magnetic components, and a rotor (104) configured to rotate relative to the stator. The rotor may comprise a commutator and a rotor core with a plurality of rotor teeth (106) defining a plurality of rotor grooves (108), wherein the rotor grooves accommodate a plurality rotor windings. In some embodiments, the commutator comprises a plurality m of commutator bars (Z), wherein m is an even number greater than 2. The rotor windings comprises a plurality of coil elements (W), wherein a coil element comprises two ends connecting a pair of commutator bars, such that a first pair of adjacent commutator bars is connected through P−1 serially connected coil elements, and a second pair of adjacent commutator bars is connected through P+1 serially connected coil elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.