Multiple induction electric motor and vehicle

• US 8,550,196 B2
• Filed: 08/27/2010
• Issued: 10/08/2013
• Est. Priority Date: 08/31/2009
• Status: Active Grant

• Current Assignee: Multiple Electric Systems, LLC
• Original Assignee: New Core, Inc.
• Inventors: Ross, Robert
• Primary Examiner(s): WALTERS, JOHN DANIEL
• Application Number:
  US13/394,206
• Publication Number:
  US 20120186888A1
• Time in Patent Office: 1,138 Days
• Field of Search: 180/65.285, 180/65.21, 180/65.1, 903/906, 310/112, 310/114, 310/211, 310/212, 318/807, 318/808, 318/503, 318/727
• US Class Current: 180/65.285
• CPC Class Codes: B60K 1/00 Arrangement or mounting of electrical propulsion units B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00; electric transmission arrangements B60K17/12; electric equipment or propulsion of electrically-propelled vehicles per se B60L; current-collectors for power supply lines of electrically-propelled vehicles B60L5/00
• CPC Class Codes: B60K 1/02 comprising more than one electric motor
• CPC Class Codes: B60K 1/04 of the electric storage means for propulsion exchanging batteries for electric propulsion of vehicles B60L53/80; for auxiliary purposes only B60R16/04; supplying batteries to, or removing batteries from, vehicles B60S5/06
• CPC Class Codes: B60K 15/07 of gas tanks
• CPC Class Codes: B60K 2001/0438 Arrangement under the floor
• CPC Class Codes: B60K 2015/0638 the fuel tank is arranged in the rear of the vehicle
• CPC Class Codes: B60L 1/003 to auxiliary motors, e.g. for pumps, compressors
• CPC Class Codes: B60L 2210/20 AC to AC converters
• CPC Class Codes: B60L 2220/20 DC electrical machines
• CPC Class Codes: B60L 2240/36 Temperature of vehicle components or parts
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 2270/145 Structure borne vibrations
• CPC Class Codes: B60L 3/0023 Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 3/0092 with use of redundant elements for safety purposes
• CPC Class Codes: B60L 50/61 by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
• CPC Class Codes: B60L 50/66 Arrangements of batteries
• CPC Class Codes: B60L 53/51 Photovoltaic means
• CPC Class Codes: B60L 53/52 Wind-driven generators
• CPC Class Codes: B60L 58/10 for monitoring or controlling batteries
• CPC Class Codes: B60Y 2200/143 : Busses
• CPC Class Codes: B60Y 2200/91 : Electric vehicles
• CPC Class Codes: H02K 16/02 : Machines with one stator and two or more rotors
• CPC Class Codes: H02P 27/00 : Arrangements or methods for the control of AC motors characterised by the kind of supply voltage of two or more motors H02P5/00; of synchronous motors with electronic commutators H02P6/00; of DC motors H02P7/00; of stepping motors H02P8/00
• CPC Class Codes: H02P 27/04 : using variable-frequency supply voltage, e.g. inverter or converter supply voltage
• CPC Class Codes: H02P 5/69 : mechanically coupled by gearing
• CPC Class Codes: H02P 6/04 : Arrangements for controlling or regulating the speed or torque of more than one motor H02P6/10 takes precedence
• CPC Class Codes: H02P 9/02 : Details of the control
• CPC Class Codes: Y02T 10/62 : Hybrid vehicles
• CPC Class Codes: Y02T 10/64 : Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 : Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 : Electric energy management in electromobility
• CPC Class Codes: Y02T 90/12 : Electric charging stations
• CPC Class Codes: Y10S 903/906 : Motor or generator

Abstract

A novel multiple induction electric motor and vehicle that stores electrical power; provides a first and second direct current power input from the stored electrical power; separately produces first and second synchronized variable frequency alternating current control signal from the first and second direct current power inputs, respectively; produces first and second synchronized rotating magnetic fields responsive to the first and second variable frequency alternating current control signals, respectively; induces a first induced magnetic field around a conductor in a first inductive rotor responsive to the first rotating magnetic field; induces a second induced magnetic field around a conductor in a second inductive rotor responsive to the second rotating magnetic field; applies first and second rotational forces between the first and second rotating magnetic fields and the first and second induced magnetic fields to the shaft; and transmits the first and second rotational forces to a drive wheel.

Claims

1. A method for turning a shaft comprising:

receiving a first direct current power input;

receiving a second direct current power input;

producing a first variable frequency alternating current control signal from the first direct current power input;

separately producing a second variable frequency alternating current control signal from the second direct current power input, synchronized to the first variable frequency alternating current control signal;

producing a first rotating magnetic field responsive to the first variable frequency alternating current control signal;

producing a second rotating magnetic field, responsive to the second variable frequency alternating current control signal and synchronized to the first rotating magnetic field;

inducing a first induced magnetic field around a conductor in a first inductive rotor, responsive to the first rotating magnetic field;

inducing a second induced magnetic field around a conductor in a second inductive rotor, responsive to the second rotating magnetic field;

applying a first rotational force between the first rotating magnetic field and the first induced magnetic field to the shaft; and

applying a second rotational force between the second rotating magnetic field and the second induced magnetic field to the shaft.

2. A system for turning a shaft comprising:

means for receiving a first direct current power input;

means for receiving a second direct current power input;

means for producing a first variable frequency alternating current control signal from the first direct current power input;

means for separately producing a second variable frequency alternating current control signal from the second direct current power input, synchronized to the first variable frequency alternating current control signal

means for producing a first rotating magnetic field responsive to the first variable frequency alternating current control signal;

means for producing a second rotating magnetic field, responsive to the second variable frequency alternating current control signal and synchronized to the first rotating magnetic field;

means for inducing a first induced magnetic field around a conductor in a first inductive rotor, responsive to the first rotating magnetic field;

means for inducing a second induced magnetic field around a conductor in a second inductive rotor, responsive to the second rotating magnetic field;

means for applying a first rotational force between the first rotating magnetic field and the first induced magnetic field to the shaft; and

means for applying a second rotational force between the second rotating magnetic field and the second induced magnetic field to the shaft.

3. The system of turning a shaft of claim 2 wherein:

the means for receiving a first direct current power input and the means for producing a first variable frequency alternating current control signal comprise a first variable frequency motor drive controller; and

the means for receiving a second direct current power input and the means for separately producing a second variable frequency alternating current control signal comprise a second variable frequency motor drive controller.

4. The system for turning a shaft of claim 3 wherein:

the means for producing a first rotating magnetic field comprises a first stator;

the means for producing a second rotating magnetic field comprises a second stator;

the means for inducing the first induced magnetic field comprises the first inductive rotor; and

the means for inducing the second induced magnetic field comprises the second inductive rotor.

5. The system of claim 4 wherein the first and second inductive rotors each comprises a squirrel cage rotor.

6. The system for turning a shaft of claim 4 wherein:

the first stator further comprises a plurality of stator laminates stacked together;

the second stator further comprises a plurality of stator laminates stacked together;

the first inductive rotor further comprises a plurality of rotor laminates stacked together;

the second inductive rotor further comprises a plurality of rotor laminates stacked together; and

the first stator, second stator, first inductive rotor, and second inductive rotor each has a stacking factor of at least 98 percent.

7. The system for turning a shaft of claim 6 wherein:

the plurality of stator laminates of the first stator are rotated approximately 180 degrees relative to adjacent stator laminates;

the plurality of stator laminates of the second stator are rotated approximately 180 degrees relative to adjacent stator laminates;

the plurality of rotor laminates of the first inductive rotor are rotated approximately 180 degrees relative to adjacent rotor laminates; and

the plurality of rotor laminates of the second inductive rotor are rotated approximately 180 degrees relative to adjacent rotor laminates.

8. The system for turning a shaft of claim 7 wherein the first and second stator each further comprises form wound wire windings.

9. The system for turning a shaft of claim 2 wherein:

the means for applying a first rotational force between the first rotating magnetic field and the first induced magnetic field to the shaft comprises the first inductive rotor rigidly joined to the shaft; and

the means applying a second rotational force between the second rotating magnetic field and the second induced magnetic field to the shaft comprises the second inductive rotor rigidly joined to the shaft.

10. A system for turning a shaft comprising:

a first variable frequency motor drive controller;

a second variable frequency motor drive controller synchronized to the first variable frequency motor drive controller;

a first stator positioned and arranged to receive a first variable frequency alternating current control signal from the first variable frequency motor drive controller;

a second stator positioned and arranged to receive a second variable frequency alternating current control signal from the second variable frequency motor drive controller;

a first inductive rotor responsive to the first stator and rigidly joined to the shaft; and

a second inductive rotor responsive to the second stator and rigidly joined to the shaft.

11. The system for turning a shaft of claim 10 wherein:

the first stator comprises a plurality of stator laminates stacked together;

the second stator further comprises a plurality of stator laminates stacked together; and

the first and second stator each have a stacking factor of at least about 98 percent.

12. The system for turning a shaft of claim 11 wherein the plurality of stator laminates are rotated approximately 180 degrees relative to adjacent stator laminates.

13. The system for turning a shaft of claim 10 wherein the first and second stator each further comprises form wound wire windings.

14. The system for turning a shaft of claim 10 wherein the first and second inductive rotor each comprises a squirrel cage rotor.

15. The system for turning a shaft of claim 14 wherein:

the first inductive rotor and second inductive rotor each further comprises a plurality of rotor laminates stacked together; and

the first inductive rotor and second inductive rotor each have a stacking factor of at least about 98 percent.

16. The system for turning a shaft of claim 15 wherein:

the plurality of rotor laminates of the first inductive rotor are rotated approximately 180 degrees relative to adjacent rotor laminates; and

the plurality of rotor laminates of the second inductive rotor are rotated approximately 180 degrees relative to adjacent rotor laminates.

17. A method of propelling a vehicle comprising:

storing electrical power;

providing a first direct current power input from the stored electrical power;

providing a second direct current power input from the stored electrical power;

producing a first variable frequency alternating current control signal from the first direct current power input;

separately producing a second variable frequency alternating current control signal from the second direct current power input, synchronized to the first variable frequency alternating current control signal;

producing a first rotating magnetic field responsive to the first variable frequency alternating current control signal;

producing a second rotating magnetic field, responsive to the second variable frequency alternating current control signal, synchronized to the first rotating magnetic field;

inducing a first induced magnetic field around a conductor in a first inductive rotor responsive to the first rotating magnetic field;

inducing a second induced magnetic field around a conductor in a second inductive rotor responsive to the second rotating magnetic field;

applying a first rotational force between the first rotating magnetic field and the first induced magnetic field to the shaft;

applying a second rotational force between the second rotating magnetic field and the second induced magnetic field to the shaft; and

transmitting the first and second rotational forces to a drive wheel.

18. The method of propelling a vehicle of claim 17, further comprising:

generating electrical power;

augmenting the first direct current power input with the generated electrical power; and

augmenting the second direct current power input with the generated electrical power.

19. The method of propelling a vehicle of claim 18, further comprising:

recharging the stored electrical power from the generated electrical power.

20. A vehicle comprising:

means for supporting a load;

at least one means for propelling the means for carrying a load by applying rotational motion to the ground and carrying at least a portion of the means for supporting a load;

means, mounted on the means for supporting a load, for storing electrical power;

means, mounted on the means for supporting a load, for providing a first direct current power input from the stored electrical power;

means, mounted on the means for supporting a load, for providing a second direct current power input from the stored electrical power;

means, mounted on the means for supporting a load, for producing a first variable frequency alternating current control signal from the first direct current power input;

means, mounted on the means for supporting a load, for separately producing a second variable frequency alternating current control signal from the second direct current power input, synchronized to the first variable frequency alternating current control signal;

means, mounted on the means for supporting a load, for producing a first rotating magnetic field responsive to the first variable frequency alternating current control signal;

means, mounted on the means for supporting a load, for producing a second rotating magnetic field, responsive to the second variable frequency alternating current control signal, synchronized to the first rotating magnetic field;

means, mounted on the means for supporting a load, for inducing a first induced magnetic field around a conductor in a first inductive rotor responsive to the first rotating magnetic field;

means, mounted on the means for supporting a load, for inducing a second induced magnetic field around a conductor in a second inductive rotor responsive to the second rotating magnetic field;

means, mounted on the means for supporting a load, for applying a first rotational force between the first rotating magnetic field and the first induced magnetic field to the shaft;

means, mounted on the means for supporting a load, for applying a second rotational force between the second rotating magnetic field and the second induced magnetic field to the shaft; and

means for converting the first and second rotational forces to the at least one means for propelling the means for carrying a load by applying rotational motion to the ground.

21. The vehicle of claim 20, wherein:

the means for producing a first variable frequency alternating current control signal comprises a first variable frequency motor drive controller; and

the means for separately producing a second variable frequency alternating current control signal comprises a second variable frequency motor drive controller.

22. The vehicle of claim 21, wherein:

the means for providing a first direct current power input from the stored electrical power comprise a first lead connecting the means for storing electrical energy to the first variable frequency motor drive controller;

the means for providing a second direct current power input from the stored electrical power comprise a second lead connecting the means for storing electrical energy to the second variable frequency motor drive controller.

23. The vehicle of claim 22, wherein:

the means for producing a first rotating magnetic field comprises a first stator;

the means for producing a second rotating magnetic field comprises a second stator;

the means for inducing the first induced magnetic field comprises the first inductive rotor; and

the means for inducing the second induced magnetic field comprises the second inductive rotor.

24. The system for turning a shaft of claim 23 wherein:

the means for applying a first rotational force between the first rotating magnetic field and the first induced magnetic field to the shaft comprises the first inductive rotor rigidly joined to the shaft; and

the means applying a second rotational force between the second rotating magnetic field and the second induced magnetic field to the shaft comprises the second inductive rotor rigidly joined to the shaft.

25. The vehicle of claim 24, wherein:

the first stator further comprises a plurality of stator laminates stacked together;

the second stator further comprises a plurality of stator laminates stacked together;

the first inductive rotor further comprises a plurality of rotor laminates stacked together;

the second inductive rotor further comprises a plurality of rotor laminates stacked together; and

the first and second stators and the first and second inductive rotors each has a stacking factor of at least 98 percent.

26. The vehicle of claim 25, wherein:

the plurality of stator laminates of the first stator are rotated approximately 180 degrees relative to adjacent stator laminates;

the plurality of stator laminates of the second stator are rotated approximately 180 degrees relative to adjacent stator laminates

the plurality of rotor laminates of the first inductive rotor are rotated approximately 180 degrees relative to adjacent rotor laminates; and

the plurality of rotor laminates of the second inductive rotor are rotated approximately 180 degrees relative to adjacent rotor laminates.

27. The vehicle of claim 26 wherein the first and second inductive rotors each comprises a squirrel cage rotor.

28. The vehicle of claim 24, further comprising:

means, mounted on the means for supporting a load, for generating electrical power;

means for augmenting the first direct current power input with the generated electrical power;

means for augmenting the second direct current power input with the generated electrical power.

29. The vehicle of claim 28, wherein:

the means for generating electrical power comprises a generator.

30. The vehicle of claim 29, wherein:

the means for augmenting the first direct current power input with the generated electrical power comprises a third power lead connecting the generator to the first variable frequency motor drive controller; and

the means for augmenting the second direct current power input with the generated electrical power comprises a fourth power lead connecting the generator to the second variable frequency motor drive controller.

31. The vehicle of claim 30, wherein:

the means for supporting a load further comprises, a chassis;

the means for propelling the means for carrying a load comprises a drive wheel;

the means for recharging the stored electrical power further comprises a generator; and

the means for storing electrical power comprises a battery;

the means for converting the first and second rotational forces to the means for propelling comprises a transmission.

32. The vehicle of claim 24, wherein the first variable frequency motor drive controller and the second variable frequency motor drive controller are responsive to a torque control positioned and arranged to receive input from an operator.

33. A vehicle comprising:

a chassis,

a drive wheel carrying at least a portion of the chassis;

a first electrical power storage mounted on the chassis;

a first variable frequency motor drive controller positioned and arranged to receive direct current power from the first electrical power storage;

a second variable frequency motor drive controller positioned and arranged to receive direct current power from the first electrical power storage, synchronized to the first variable frequency motor drive controller;

a first stator positioned and arranged to receive a first variable frequency alternating current control signal from the first variable frequency motor drive controller;

a second stator positioned and arranged to receive a second variable frequency alternating current control signal from the second variable frequency motor drive controller;

a first inductive rotor responsive to the first stator and rigidly joined to the shaft;

a second inductive rotor responsive to the second stator and rigidly joined to the shaft; and

a transmission coupling the shaft to the drive wheel.

34. The vehicle of claim 33, wherein:

the first stator further comprises a plurality of stator laminates stacked together;

the second stator further comprises a plurality of stator laminates stacked together;

the first inductive rotor further comprises a plurality of rotor laminates stacked together;

the second inductive rotor further comprises a plurality of rotor laminates stacked together; and

the first and second stators and the first and second inductive rotors each have a stacking factor of at least 98 percent.

35. The vehicle of claim 34, wherein:

the plurality of stator laminates of the first stator are rotated approximately 180 degrees relative to adjacent stator laminates;

the plurality of stator laminates of the second stator are rotated approximately 180 degrees relative to adjacent stator laminates

the plurality of rotor laminates of the first inductive rotor are rotated approximately 180 degrees relative to adjacent rotor laminates; and

the plurality of rotor laminates of the second inductive rotor are rotated approximately 180 degrees relative to adjacent rotor laminates.

36. The vehicle of claim 35 wherein the first and second inductive rotors each comprises a squirrel cage rotor.

37. The vehicle of claim 33 further comprising:

electrical power generator mounted on the chassis providing direct current electrical power to the first and second variable frequency motor drive controllers.

38. The vehicle of claim 37, wherein:

the electrical power storage comprises a battery; and

the electric power generator comprises a propane generator.

39. The vehicle of claim 38, wherein the first motor drive controller and the second motor drive controller are responsive to a torque control positioned and arranged to receive input from an operator.

40. The vehicle of claim 39, further comprising:

An auxiliary electric motor, mounted on the chassis, powering auxiliary systems.