Electric machine
A permanent magnet machine includes a stator having a stator core, a plurality of stator teeth and plurality of stator windings coupled to the stator core. The stator is configured to generate a stator magnetic rotating field when the stator windings are excited with an electric current. The stator magnetic rotating field includes both synchronous sub-harmonic and super-harmonic components. The permanent magnet machine also includes a rotor that is disposed within the stator. The rotor includes a rotor core and a plurality of rotor magnets that are coupled to the rotor core. The rotor magnets are further configured to have a predefined orientation profile such that when the stator windings are excited with an electric current, sub-harmonic and super-harmonic magnetic rotating fields are generated in the rotor magnetic field. The stator sub-harmonic and super-harmonic magnetic rotating fields interact with the rotor sub-harmonic and super-harmonic magnetic rotating fields and produce an aiding torque on in the permanent magnet machine.
- Research Organization:
- General Electric Company, Niskayuna, NY (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC26-07NT43122
- Assignee:
- General Electric Company (Niskayuna, NY)
- Patent Number(s):
- 8,633,627
- Application Number:
- 13/220,848
- OSTI ID:
- 1531893
- Country of Publication:
- United States
- Language:
- English
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