Induction switched reluctance motor
View Patent ↗A switched reluctance motor is disclosed. The switched reluctance motor includes a rotor, a stator, an air gap between the stator and the rotor, and a plurality of conductive elements. The plurality of conductive elements are disposed on the rotor.
1. A switched reluctance motor, comprising:
a stator;
a rotor configured to rotate with respect to the stator, the rotor comprising a first back iron and a plurality of rotor poles;
an air gap between the stator and the rotor; and
a first plurality of conductive elements, the first plurality of conductive elements disposed on the rotor; wherein:
the stator comprises a second plurality of conductive elements, a second back iron, and a plurality of stator poles,
the second plurality of conductive elements associated with a plurality of separately excitable phases, and
each phase of the plurality of separately excitable phases configured to be excited by energizing a subset of the second plurality of conductive elements using pulses of direct current.
2. The motor of claim 1 , wherein the rotor is non-segmental.
3. The motor of claim 1 , wherein the rotor is located in a position, the position being interior of the stator.
4. The motor of claim 1 , wherein the rotor is located in a position, the position being exterior of the stator.
5. The motor of claim 1 , wherein
the rotor includes a first material,
the first material includes a ferromagnetic material,
the stator includes a second material, and
the second material includes a ferromagnetic material.
6. The motor of claim 1 , wherein the first plurality of conductive elements includes a plurality of concentric wound windings.
7. The motor of claim 1 , wherein the first plurality of conductive elements includes a plurality of solid conductive elements.
8. The motor of claim 1 , wherein the first plurality of conductive elements are short-circuited.
9. The motor of claim 1 , wherein:
each element of the first plurality of conductive elements is disposed between a first adjacent poles pair of the plurality of rotor poles, and
each element of the second plurality of conductive elements is disposed between a second adjacent poles pair of the plurality of stator poles.
10. The motor of claim 1 , wherein the second plurality of conductive elements include a plurality of concentric wound windings.
11. The motor of claim 1 , wherein the second plurality of conductive elements include a plurality of solid conductive elements.
12. The motor of claim 1 , wherein:
each conductive element of the first plurality of conductive elements and
each conductive element of the second plurality of conductive elements includes a full-pitch winding.
13. The motor of claim 1 , wherein:
each conductive element of the first plurality of conductive elements includes a short-pitch winding,
the short-pitch winding includes a single tooth winding, and
the conductive element of the second plurality of conductive elements includes a full-pitch winding.
14. The motor of claim 1 , wherein:
each conductive element of the first plurality of conductive elements includes a short-pitch winding,
the plurality of stator poles comprise a plurality of adjacent poles pairs, each of the plurality of adjacent poles pairs comprising a first stator pole and a second stator pole, a width of the first stator pole being at least twice as large as a width of the second stator pole,
each conductive element of the second plurality of conductive elements comprises a short-pitch winding wound around the first stator pole, and
the short-pitch winding includes a single tooth winding.
15. The motor of claim 1 , wherein:
the plurality of rotor poles are connected to the first back iron, and
the plurality of stator poles are connected to the second back iron.
16. The motor of claim 1 , wherein a number of the plurality of stator poles is equal to or smaller than 18.
17. The motor of claim 1 , wherein:
each phase of the plurality of separately excitable phases is associated with one respective stator pole of the plurality of stator poles and a short flux path, and
the short flux path excludes the first back iron.
18. The motor of claim 1 , wherein the short flux path comprises:
a stator pole among the plurality of stator poles,
a portion of a rotor pole among the plurality of rotor poles, the rotor pole being adjacent to the stator pole, and
a portion of the air gap, the portion of the air gap being located between the stator pole and the portion of the rotor pole.