Mirroring of high rotor pole switched reluctance machines
A high rotor pole switched reluctance machine (HRSRM) employs an axial and radial mirroring concept and is represented by a first Multiple Rotor Pole (MRP) formula and second Multiple Stator Pole (MSP) formula. A multiple rotor HRSRM comprises at least two rotors each having a plurality of rotor poles and at least two stators having a plurality of stator poles. The at least two rotors and the at least two stators are positioned about a central axis with the stator placed between the rotors. In other embodiments, the number of stators equals the number of rotors and effectively operate as a single stator and rotor. In yet another embodiment, the effective single stator and rotor type high rotor pole switched reluctance machine is realized as single stator and rotor positioned concentrically around a central axis.
1. A high rotor pole switched reluctance machine comprising:
at least two rotors positioned about a central axis, each of the at least two rotors comprising a first and second radial rotor surface and a plurality of rotor poles, the rotor poles located on at least one of the radial rotor surfaces; and
at least two stators positioned about the central axis, at least one of which is placed between the at least two rotors, each of the at least two stators comprising a first and second radial stator surface and a plurality of stator poles, the stator poles located on at least one of the radial stator surfaces;
wherein said at least two stators are aligned such that all said stator poles exhibit radial symmetry and wherein said at least two rotors are aligned such that all said rotor poles exhibit radial symmetry; and
wherein the plurality of rotor poles is in a numerical relationship with the plurality of stator poles, the numerical relationship defined by the Multiple Rotor Pole (MRP) formula:
N R,tot =R×N R =S× (2 N S −2)
wherein N R,tot is the total number of rotor poles, R is the number of individual rotors, S is the number of individual stators, N R is the number of rotor poles per rotor and N S is the number of stator poles per stator.
2. The high rotor pole switched reluctance machine of claim 1 wherein the plurality of rotor poles on one of the at least two rotors is projected opposite the plurality of stator poles on the first radial stator surface of one of the at least two stators.
3. The high rotor pole switched reluctance machine of claim 1 wherein the plurality of rotor poles on the first radial rotor surface of one of the at least two rotors is projected opposite the plurality of stator poles on the second radial stator surface of one of the at least two stators.
4. The high rotor pole switched reluctance machine of claim 1 wherein the plurality of rotor poles on the second radial rotor surface of the at least two rotors is projected opposite the plurality of stator poles on the first radial stator surface of the at least two stators.
5. The high rotor pole switched reluctance machine of claim 1 wherein the plurality of stator poles on the first radial stator surface of the at least two stators is projected opposite the plurality of rotor poles on the second radial surface of the at least two rotors.
6. The high rotor pole switched reluctance machine of claim 1 wherein the plurality of stator poles on the second radial stator surface of one of the at least two stators is projected opposite the plurality of rotor poles on the first radial rotor surface of one of the at least two rotors.
7. The high rotor pole switched reluctance machine of claim 1 wherein the machine is a three-phase type.
8. The high rotor pole switched reluctance machine of claim 1 wherein S=2, R=2.
9. The high rotor pole switched reluctance machine of claim 8 wherein the plurality of rotor poles on one of the at least two rotors is projected opposite the plurality of stator poles on the first radial stator surface of one of the at least two stators.
10. The high rotor pole switched reluctance machine of claim 8 wherein the plurality of rotor poles on the first radial rotor surface of one of the at least two rotors is projected opposite the plurality of stator poles on the second radial stator surface of one of the at least two stators.
11. The high rotor pole switched reluctance machine of claim 8 wherein the plurality of rotor poles on the second radial rotor surface of the at least two rotors is projected opposite the plurality of stator poles on the first radial stator surface of the at least two stators.
12. The high rotor pole switched reluctance machine of claim 8 wherein the plurality of stator poles on the first radial stator surface of the at least two stators is projected opposite the plurality of rotor poles on the second radial surface of the at least two rotors.
13. The high rotor pole switched reluctance machine of claim 8 wherein the plurality of stator poles on the second radial stator surface of one of the at least two stators is projected opposite the plurality of rotor poles on the first radial rotor surface of one of the at least two rotors.
14. The high rotor pole switched reluctance machine of claim 8 wherein the machine is a three-phase type.