Power collection system for transportation systems

• US 5,174,215 A
• Filed: 01/22/1992
• Issued: 12/29/1992
• Est. Priority Date: 01/22/1992
• Status: Expired due to Term

• Current Assignee: Charles Stark Draper Laboratory Incorporated
• Original Assignee: Charles Stark Draper Laboratory Incorporated
• Inventors: Barrows, Timothy M.
• Primary Examiner(s): Le, Mark T.
• Application Number:
  US07/823,867
• Time in Patent Office: 342 Days
• Field of Search: 104/287, 104/288, 104/289, 104/290, 104/292, 104/294, 104/281, 104/282, 104/286, 191/1 R, 191/1 A, 191/10, 191/45 R, 310/12, 310/13, 310/52
• US Class Current: 104/288
• CPC Class Codes: B60L 15/005 for control of propulsion for vehicles propelled by linear motors
• CPC Class Codes: H02K 41/00 Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path electromagnetic launchers F41B6/00
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility

Abstract

A power collection system for a transportation system with a vehicle and a guideway includes a stator winding disposed in the guideway for generating a traveling magnetic field which propagates in the guideway and a rotating magnetic rotor disposed in the vehicle including a plurality of magnetic poles which couple with the traveling magnetic field and synchronize the local field of the rotor adjacent the stator winding with the traveling magnetic field.

Claims

1. A power collection system for a transportation system including a vehicle and guideway, comprising:

a stator winding disposed in the guideway for generating a traveling magnetic field which propagates in the guideway, said traveling magnetic field selectably producing a thrust on said vehicle;

a rotating magnetic rotor, which produces a local field having a phase, disposed in the vehicle including a plurality of magnetic poles which couple with the traveling magnetic field and synchronize the local field of the rotor adjacent and stator winding with the traveling magnetic field; and

braking means for applying braking force to said rotor to control the phase of the rotor local field relative to the traveling magnetic field of the stator winding and the thrust developed from the traveling magnetic field, said braking means decreasing the rotational velocity of the rotating magnetic rotor thereby producing said thrust and increasing the vehicle speed along the guideway.

2. The power collection system of claim 1 in which said stator winding is disposed with its active conductors transverse to the direction of vehicle travel.

3. The power collection system of claim 1 in which said stator winding is a multi-phase winding.

4. The power collection system of claim 1 in which said traveling wave propagates along the guideway in the direction of vehicle travel.

5. The power collection system of claim 1 in which the guideway includes a highway.

6. The power collection system of claim 1 in which said poles include permanent magnets.

7. The power collection system of claim 1 in which said poles include field windings.

8. The power collection system of claim 7 in which said field windings are superconducting windings.

9. The power collection system of claim 1 in which said stator is air cored.

10. A power collection system for a transportation system including a vehicle and guideway comprising:

a stator winding disposed in the guideway with its active conductors extending generally in the direction of the vehicle travel for generating a traveling magnetic field which propagates in the guideway generally transversely to the direction of vehicle travel, said traveling magnetic field selectably producing a thrust on said vehicle;

a magnetic rotor, which produces a local field having a phase, disposed in the vehicle for rotation about an axis generally parallel to the vehicle direction and including a plurality of magnetic poles which couple with the traveling magnetic field and synchronize the local field of the rotor adjacent the stator winding with the traveling magnetic field; and

braking means for applying braking force to said rotor to control the phase of the rotor relative to the traveling magnetic field of the stator winding and the thrust developed from the traveling magnetic field, said braking means decreasing the rotational velocity of the magnetic rotor thereby producing said thrust and increasing the vehicle speed along the guideway.

11. The power collection system of claim 10 in which said stator winding is a multi-phase winding.

12. The power collection system of claim 10 in which the guideway includes a highway.

13. The power collection system of claim 10 in which said poles include permanent magnets.

14. The power collection system of claim 10 in which said poles include field windings.

15. The power collection system of claim 14 in which said field windings are superconducting windings.

16. The power collection system of claim 10 further including power converter means, responsive to said rotor, for generating electrical power from said rotor rotation.

17. The power collection of claim 16 further including means, responsive to said power converter means, for providing mechanical thrust to move the vehicle.

18. The power collection system of claim 10 in which said stator is air cored.