초록 ▼

A modular assembly for an electromagnetic machine is disclosed. The modular assembly includes a rotor assembly and a flux controlling assembly. The rotor assembly has a shaft and has a plurality of rotor laminations mounted on the shaft. The rotor laminations define at least four salient rotor poles

A modular assembly for an electromagnetic machine is disclosed. The modular assembly includes a rotor assembly and a flux controlling assembly. The rotor assembly has a shaft and has a plurality of rotor laminations mounted on the shaft. The rotor laminations define at least four salient rotor poles. At least one permanent magnet is embedded in each of at least two of the salient rotor poles. The flux assembly has a stationary coil disposing about the shaft for controlling flux of the disclosed machine. The flux assembly also has a cage supported on the rotor assembly for transferring flux between the at least two salient rotor poles with embedded magnets and the coil. In one embodiment, a support member is mounted on the shaft and supports the cage thereon. In another embodiment, a support member is connected between the cage and the at least two rotor poles with embedded magnets.

대표청구항 ▼

What is claimed is: 1. A flux controllable electromagnetic machine, comprising: a rotor having a shaft and a plurality of salient rotor poles, the plurality of salient rotor poles having a consequent pole arrangement and including a plurality of first salient rotor poles each having a permanent mag

What is claimed is: 1. A flux controllable electromagnetic machine, comprising: a rotor having a shaft and a plurality of salient rotor poles, the plurality of salient rotor poles having a consequent pole arrangement and including a plurality of first salient rotor poles each having a permanent magnet embedded therein, and a plurality of second salient rotor poles without permanent magnets; a coil for controlling flux being disposed about the shaft; and a cage for transferring flux being disposed about the coil, a portion of the cage being in substantial contact with at least one of the first salient rotor poles. 2. The machine of claim 1, wherein the rotor comprises a plurality of rotor laminations mounted on the shaft. 3. The machine of claim 2, wherein the rotor laminations define magnet retention slots for the permanent magnets. 4. The machine of claim 2, further comprising a conductor positioned through one or more of the rotor laminations in one of the first salient rotor poles. 5. The machine of claim 1, wherein the cage comprises a body having a first surface adjacent an end of one of the first salient rotor poles and having a second surface adjacent the coil. 6. The machine of claim 5, wherein the portion of the cage in substantial contact with said at least one of the first salient rotor poles comprises an extension of the first surface of the body towards the end of said at least one of the first salient rotor poles. 7. The machine of claim 1, further comprising a support member supporting the cage on the rotor. 8. The machine of claim 7, wherein the support member is mounted on the shaft of the rotor and supports at least one surface of the cage thereon. 9. The machine of claim 7, wherein the support member comprises a plurality of support laminations. 10. The machine of claim 9, wherein the support laminations comprise a magnetic material. 11. The machine of claim 9, wherein the support laminations define magnet retention slots for an end of one of the permanent magnets. 12. The machine of claim 7, wherein the support member comprises a plurality of support laminations mounted on the shaft and supporting an end of one of the permanent magnets thereon, and wherein the end of one of the permanent magnets supports at least one surface of the cage thereon. 13. The machine of claim 7, wherein the support member is connected between the cage and one of the first salient rotor poles. 14. The machine of claim 13, wherein the support member has one end disposed in a first retention slot at least partially defined in said one of the first salient rotor poles. 15. The machine of claim 14, wherein the support member has another end integrally connected to the portion of the cage. 16. The machine of claim 14, wherein the support member has another end disposed in a second retention slot in the portion of the cage. 17. The machine of claim 1, wherein each permanent magnet is selected from the group consisting of a ferrite magnet, an alnico magnet, a praseodymium alloy magnet, a rare earth-neodymium magnet, a rare earth-samarium cobalt magnet, and a neodymium-iron-boron compound. 18. The machine of claim 1, wherein each permanent magnet comprises a block magnet having a substantially rectilinear cross-section. 19. The machine of claim 1, wherein each permanent magnet comprises first and second permanent magnets embedded adjacent one another in one of the first salient rotor poles. 20. The machine of claim 19, wherein a first radial distance from a center of the rotor to the first permanent magnet of the layer is approximately equal to a second radial distance from the center of the rotor to an edge where a pole slot in the rotor defines the rotor pole. 21. The machine of claim 19, wherein a pole slot in the rotor defines the rotor pole and receives a magnetizing coil for orienting the first and second permanent magnets during manufacture of the rotor, and wherein the pole slot allows flux lines from the magnetizing coil to pass substantially perpendicular to the permanent magnets embedded in the rotor pole. 22. The machine of claim 19, wherein the first and second permanent magnets are separated by a layer of material of said one of the first salient rotor poles. 23. The machine of claim 1, wherein the cage comprises a plurality of first portions being in substantial contact with a plurality of the first salient rotor poles. 24. The machine of claim 1, further comprising: a second coil for controlling flux being disposed about the shaft adjacent another end of the rotor; and a second cage for transferring flux being disposed about the second coil and having a plurality of second portions being in substantial contact with at least one of the first salient rotor poles. 25. The machine of claim 1, wherein the cage comprises a plurality of first portions being in substantial contact with the plurality of first salient rotor poles. 26. The machine of claim 1 further comprising a stator, and wherein the permanent magnets extend in an axial direction beyond at least one axial end of the stator. 27. A flux controllable electromagnetic machine, comprising: a rotor having a shaft and having a plurality of rotor laminations mounted on the shaft, the rotor laminations defining a plurality of salient rotor poles; said plurality of salient rotor poles having a consequent pole arrangement and including a plurality of first salient rotor poles each having at least one permanent magnet embedded therein and a plurality of second salient rotor poles without permanent magnets; a stationary coil for controlling flux being disposed about the shaft adjacent an end of the rotor; and a rotatable cage for transferring flux being disposed about the coil, at least two portions of the cage each being in substantial contact with the end of the rotor on a respective one of the first salient rotor poles. 28. The machine of claim 27, wherein the plurality of rotor laminations define magnet retentions slots for the magnets. 29. The machine of claim 27, further comprising a conductor positioned through one or more of the rotor laminations in at least two of the first salient rotor poles. 30. The machine of claim 27, wherein the cage comprises a body having an edge adjacent the end of the rotor and having an inner surface adjacent the coil. 31. The machine of claim 30, wherein the at least two portions of the cage each comprise an extension of the edge of the body towards the end of the rotor at a respective one of the first salient rotor poles. 32. The machine of claim 27, further comprising a support member supporting the cage on the rotor. 33. The machine of claim 32, wherein the support member is mounted on the shaft of the rotor and supports at least one surface of the cage thereon. 34. The machine of claim 32, wherein the support member comprises a plurality of support laminations. 35. The machine of claim 34, wherein the support laminations comprise a magnetic material. 36. The machine of claim 34, wherein the support laminations define magnet retention slots for ends of the permanent magnets. 37. The machine of claim 32, wherein the support member comprises a plurality of support laminations mounted an the shaft and supporting ends of the permanent magnets thereon, and wherein the ends of the permanent magnets support an inner surface of the cage thereon. 38. The machine of claim 32, wherein the support member comprises a connector connected between the portion of the cage and at least one of the first salient rotor polee. 39. The machine of claim 38, wherein the connector has one end disposed in a first retention slot at least partially defined in said at least one of the first salient rotor poles. 40. The machine of claim 39, wherein the connector has another end integrally connected to the portion of the cage. 41. The machine of claim 39, wherein the connector has another end disposed in a second retention slot in the portion of the cage. 42. The machine of claim 27, wherein the permanent magnets are selected from the group consisting of a ferrite magnet, an alnico magnet, a praseodymium alloy magnet, a rare earth-neodymium magnet, a rare earth-samarium cobalt magnet, and a neodymium-iron-boron compound. 43. The machine of claim 27, wherein each permanent magnets comprises a block magnets having a substantially rectilinear cross-section. 44. The machine of claim 27, wherein each permanent magnet comprises first and second permanent magnets embedded adjacent one another in each of at least two of the first salient rotor poles. 45. The machine of claim 44, wherein a first radial distance from a center of the rotor to the first permanent magnet is approximately equal to a second radial distance from the center of the rotor to an edge where a pole slot in the rotor defines the rotor pole. 46. The machine of claim 44, wherein a plurality of pole slots in the rotor define the salient rotor poles and receive a magnetizing coil for orienting the first and second permanent magnets during manufacture of the rotor, and wherein the pole slots allow flux lines from the magnetizing coil to pass substantially perpendicular to the permanent magnets embedded in the first salient rotor poles. 47. The machine of claim 44, wherein the first and second permanent magnets are separated by a layer of material of the rotor laminations. 48. The machine of claim 47, wherein the layer is approximately at least three times the width of one rotor lamination. 49. The machine of claim 48, wherein the cage has a plurality of first portions being in substantial contact with the first salient rotor poles. 50. The machine of claim 27, wherein the cage has a plurality of first portions being in substantial contact with the first salient rotor poles. 51. The machine of claim 27, further comprising: a second coil for controlling flux being disposed about the shaft adjacent another end of the rotor; and a second cage for transferring flux being disposed about the second coil and having a plurality of second portions being in substantial contact with the first salient rotor poles. 52. The machine of claim 27 further comprising a stator, and wherein the permanent magnets extend in an axial direction beyond at least one axial end of the stator.