Hybrid synchronous electric machine
US7034425B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 9, 2001 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | Jul 9, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2201/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A hybrid synchronous electric machine driven by the transverse magnetic flux has a rotor and a stator, the rotor armature has a massive cogged iron rings (12) in close vicinity of active parts of the motor, and cogged iron rings (14, 15) as component parts of the rotor are provided with cross-cut insulating gaps. Eddy current losses are low because eddy currents in cogged iron rings are impeded by cross-cut insulating gaps therein. Eddy currents in all passive parts of the motor (rotor armature (11), stator armature (1), ball bearing (9) and the like) are negligible since the current induced in the copper ring (12) neutralizes all the dissipated magnetic flux outside the active area of the motor. A hybrid synchronous electric machine which has low eddy current losses and high energy efficiency can be realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.