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US 7,663,283 B2Granted
Electric machine having a high-torque switched reluctance motor
AssigneesThe Texas A&M University System, StarRoter Corporation
InventorsMark T. Holtzapple, George A. Rabroker, Babak Fahimi, Mehrdad Ehsani
Life of this patent
Estimating the term…
Abstract
According to one embodiment of the present invention, an electric machine comprises a stator and a rotor. The stator has at least one stator pole with a first leg and a second leg. The rotor has at least one rotor pole. The rotor rotates relate to the stator. The at least one rotor is configured to rotate between the first leg and the second leg of the at least one stator pole.
Claims49
An electric machine, comprising:
- a stator having at least one stator pole, the at least one stator pole including a first leg and a second leg;
- a rotor having at least one rotor pole, wherein
- the rotor rotates relative to the stator, and
- the at least one rotor pole is configured to rotate between the first leg and the second leg of the at least one stator pole;
- a first coil disposed on the first leg such that most, if not all, of the first coil disposed on the first leg is spaced apart from a rotational axis of the rotor by a distance greater than or equal to a maximum radius of rotation of the at least one rotor pole;
- and
- wherein the at least one rotor pole and the at least one stator pole are configured such that a magnetic flux induced on the at least one rotor pole flows in a direction substantially parallel to a rotational axis of the rotor.
4 more elements
An electric machine, comprising:
- a stator having more than four stator poles, each stator pole comprising a coil;
- and
- a rotor having more than four rotor poles, wherein
- the rotor rotates relative to the stator such that each of the rotor poles traverses a radius of rotation disposed radially inward from most, if not all, of each coil of each of the stator poles;
- and
- the more than four stator poles and the more than four rotor poles are configured such that two sets of the more than four stator poles may be electrically fired at the same time to attract two sets of the more than four rotor pole;
- and
- wherein the more than four rotor poles and the more than four stator poles are configured such that a magnetic flux induced on at least one of the more than four rotor poles flows in a direction substantially parallel to a rotational axis of the rotor.
5 more elements
An electric machine, comprising:
- a stator having at least one stator pole;
- a rotor having at least one rotor pole, wherein
- the rotor rotates relative to the stator;
- and
- the rotor pole comprises at least three flux barriers, each flux barrier spaced apart from each other flux barrier, the at least three flux barriers configured to:
- discriminate against radial fluxes entering the rotor normally;
- and
- push more flux lines toward a fringing area of the rotor.
5 more elements
Dependencies are inferred from the claim text.