Induction machine rotors with improved frequency response

• US 20050269892A1
• Filed: 05/12/2005
• Published: 12/08/2005
• Est. Priority Date: 05/18/2004
• Status: Abandoned Application

• Current Assignee: William B. Duff Jr
• Original Assignee: William B. Duff Jr
• Inventors: Duff, William B. Jr.
• Application Number:
  US11/127,781
• Publication Number:
  US 20050269892A1
• Time in Patent Office: Days
• US Class Current: 310/212
• CPC Class Codes: H02K 17/18 having double-cage or multiple-cage rotors
• CPC Class Codes: H02K 17/30 Structural association of asynchronous induction motors with auxiliary electric devices influencing the characteristics of the motor or controlling the motor, e.g. with impedances or switches

Abstract

The present invention generally relates to the use of electrical charge storage devices in the rotors of induction machines. Optimal induction machine rotor electrical field requirements increase with rotational velocity and inversely to frequency. Pseudocapacitance and other inverse frequency capacitance adjustment methods are employed to provide for that need and thereby improve induction machine rotor performance parameters. Optimization of electrical reactance is the foundation for improvements in power transfer, torque, efficiency, stability, thermodynamics, vibration, thermodynamics and bearing life in rotational induction machines. LC rotor methods and designs are outlined herein to achieve these objectives.

Claims

1. An improved induction machine rotor having at least one rotor wind, said induction machine rotor comprising:

at least one electrical charge storage device coupled to said at least one rotor wind.

2. The induction machine rotor of claim 1, wherein the electrical charge storage device is a non-polarized capacitor.

3. The induction machine rotor of claim 2, wherein said capacitor is flat plate.

4. The induction machine rotor of claim 2, wherein said capacitor is wound.

5. The induction machine rotor of claim 2, wherein said capacitor is cylindrical.

6. The induction machine rotor of claim 2, wherein said capacitor is linear.

7. The induction machine rotor of claim 1, wherein the electrical charge storage device is a quantum charge storage device.

8. The induction machine rotor of claim 1, wherein the electrical charge storage device is a nanoscale storage device.

9. The induction machine rotor of claim 1, wherein the electrical charge storage device has enhanced surface area.

10. The induction machine rotor of claim 1, wherein the electrical charge storage device is a polarized capacitor.

11. The induction machine rotor of claim 10, wherein the polarized capacitor is one of the following:

Electrolytic, Aluminum, Tantalum, Niobium, Rubidium, Titanium, Super, Ultra, Hybrid, double layer, valve metal, quantum, or Nanoscale.

12. The induction machine rotor of claim 1, wherein the electrical charge storage device is an asymmetrical capacitor.

13. The induction machine rotor of claim 1, wherein the electrical charge storage device is a symmetrical capacitor.

14. The induction machine rotor of claim 1, wherein the electrical charge storage device is an electrochemical battery.

15. The induction machine rotor of claim 1, wherein the electrical charge storage device is a biased antiseries assembly of polarized electrical charge storage devices.

16. The induction machine rotor of any one of claim 1 wherein the electrical charge storage device is adjustable or variable.

17. The induction machine rotor of claim 1 wherein the electrical charge storage device is a Pseudocapacitance electrical charge storage device.

18. The induction machine rotor of claim 1, wherein the electrical charge storage device is adjustable by surface area variation.

19. The induction machine rotor of claim 1, wherein the electrical charge storage device is adjustable by distance separation variation.

20. The induction machine rotor of claim 1, wherein the electrical charge storage device is adjustable by dielectric constant variation.

21. The induction machine rotor of claim 1, wherein the electrical charge storage device is adjustable by electrolyte variation.

22. The induction machine rotor of claim 1, wherein the electrical charge storage device is adjustable by temperature variation.

23. The induction machine rotor of claim 1, wherein the electrical charge storage device is adjustable by relaxation period variation.

24. The induction machine rotor of claim 1, wherein the electrical charge storage device is adjustable by centripetal variation.

25. The induction machine rotor of claim 1, wherein the electrical charge storage device is adjustable by electrical lead variation.

26. The induction machine rotor of claim 1, wherein the electrical charge storage device is adjustable by irradiation.

27. The induction machine rotor of claim 1, wherein the electrical charge storage device is adjustable by passive variation.

28. The induction machine rotor of claim 1, wherein the electrical charge storage device is adjustable by controlled variation.

29. The induction machine rotor of claim 1, further comprising an electrical power supply operably connected to said one electrical charge storage device.

30. The induction machine rotor of claim 1, wherein said induction machine rotor is electrically and mechanically adapted from a squirrel cage type rotor.

31. The induction machine rotor of claim 1, wherein said induction machine rotor is electrically and mechanically adapted from a conventional wound rotor design.

32. The induction machine rotor of claim 1, wherein induction machine stator is electrically and mechanically adapted from a common rotor design.

33. The induction machine rotor of claim 1, wherein said induction machine rotor is an LC rotor.

34. The induction machine rotor of claim 1, further comprising at least one bearing connected to an LC Rotor shaft.

35. The induction machine rotor of claim 34, wherein said bearing is a magnetic bearing, journal bearing or load bearing.

36. The induction machine rotor of claim 33, further comprising an induction machine stator mechanically coupled to said LC rotor.

37. The induction machine rotor of claim 33, further comprising an induction machine stator electromagnetically coupled to said LC rotor.

38. The induction machine rotor of claim 33, further comprising a mechanical load or prime mover, connected via a shaft to said LC rotor.

39. The induction machine rotor of claim 1, wherein said rotor wind is a single wind, with single shunt capacitor.

40. The induction machine rotor of claim 1, wherein said rotor wind is a single wind, with multiple shunt capacitors.

41. The induction machine rotor of claim 1, wherein said rotor wind is a double wind, with at least one series capacitor.

44. The induction machine rotor of claim 1, wherein said rotor wind is a double wind, having a hybrid capacitor (i.e. series and shunt configuration) structure.

45. The induction machine rotor of claim 1, wherein said rotor wind is a multiple wind, having a hybrid capacitor (i.e. series and shunt configuration) structure.

46. The induction machine rotor of claim 1, further comprising at least a pair of dissimilar capacitors in shunt, to tailor make an LC rotor of a desired frequency response.

42. The induction machine rotor of claim 42, wherein said rotor wind is a double wind with each wind having the same Dot convention.

43. The induction machine rotor of claim 42, wherein said rotor wind is a double wind with each wind having opposite Dot convention (or CW/CC).