Transportation system

• US 6,651,566 B2
• Filed: 03/13/2002
• Issued: 11/25/2003
• Est. Priority Date: 03/13/2002
• Status: Expired due to Fees

• Current Assignee: Ford Motor Company
• Original Assignee: Ford Motor Company
• Inventors: Miller, John Michael, Stephan, Craig Hammann, Anderson, Richard David, Davis, Lloyd Craig
• Primary Examiner(s): Morano, S. Joseph
• Assistant Examiner(s): Olson, Lars A.
• Application Number:
  US10/063,031
• Publication Number:
  US 20030173173A1
• Time in Patent Office: 622 Days
• Field of Search: 104/288, 104/289, 104/292, 104/281, 104/282, 104/88.04, 191/10, 246/194
• US Class Current: 104/288
• CPC Class Codes: B60L 15/005 for control of propulsion for vehicles propelled by linear motors
• CPC Class Codes: B60L 2200/26 Rail vehicles
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility

Abstract

A transportation system includes a guideway lane and a power cable assembly extending along the guideway lane. The system further includes a vehicle configured to travel on the guideway lane. The vehicle includes a self-centering transformer that is movable along the cable assembly and configured to cooperate with the cable assembly to transfer power to the vehicle. In addition, the transformer includes a magnet array that creates a magnetic field for centering the transformer-with respect to the cable assembly as the transformer moves along the cable assembly.

Claims

1. A transportation system comprising:

a guideway lane;

a power cable assembly including a cable segment extending along the guideway lane; and

a vehicle configured to travel on the guideway lane, the vehicle including a self-centering transformer that is movable along the cable segment and configured to cooperate with the cable segment to transfer power to the vehicle, the transformer including a magnet array that creates a magnetic field having multiple flux paths for aligning the transformer and the cable segment horizontally and vertically with respect to each other such that the cable segment is generally centered with respect to the transformer as the transformer moves along the cable segment.

2. The transportation system of claim 1 wherein the transformer is a toroidal wound transformer.

3. The transportation system of claim 1 wherein the transformer is a coaxial winding transformer.

4. The transportation system of claim 1 wherein the magnet array is a Halbach magnet array.

5. The transportation system of claim 1 wherein the cable assembly comprises a plurality of cable segments, and the transportation system further comprises a plurality of power generators, wherein each cable segment is connected to a power generator.

6. The transportation system of claim 1 wherein the guideway lane includes two tire strips and a heating element that cooperates with the tire strips to heat the tire strips, and the vehicle is configured to travel on the tire strips.

7. The transportation system of claim 1 wherein the vehicle includes a pair of front wheels and a mechanical stop that is engageable with at least one of the front wheels while the vehicle is on the guideway lane so as to inhibit the front wheels from turning more than a predetermined angle with respect to a longitudinal axis of the vehicle.

8. The transportation system of claim 1 wherein the vehicle includes an electric motor electrically connected to the transformer.

9. The transportation system of claim 1 wherein the guideway lane includes two tire strips and a reaction strip disposed between the tire strips, and the vehicle is configured to travel on the tire strips and includes a linear induction primary element electrically connected to the transformer so as to receive power from the transformer, the primary element cooperating with the reaction strip to propel the vehicle along the guideway lane.

10. The transportation system of claim 9 wherein the reaction strip comprises a plurality of reaction plates.

11. The transportation system of claim 9 wherein the reaction strip comprises an aluminum strip and an iron backing attached to the aluminum strip.

12. The transportation system of claim 9 wherein the reaction strip comprises an aluminum strip and a low-loss steel backing attached to the aluminum strip.

13. The transportation system of claim 9 wherein the guideway lane includes a heating element for heating at least one of the tire strips.

14. The transportation system of claim 9 wherein the reaction strip includes a plurality of holes for allowing precipitation to pass through the guideway lane.

15. The transportation system of claim 9 wherein the guideway lane includes a gap between one tire strip and the reaction strip, the gap being configured to allow precipitation to pass through the guideway lane.

16. The transportation system of claim 15 wherein the tire strips slope downwardly toward the reaction strip.

17. The transportation system of claim 15 wherein the vehicle includes an air scoop for drawing air upwardly through the gap so as to provide cooling air to the vehicle.

18. The transportation system of claim 9 further comprising:

an additional vehicle configured to travel on the tire strips of the guideway lane and having a reaction plate and a power source; and

an acceleration section connected to the guideway lane, the acceleration section including a linear induction motor primary element that cooperates with the reaction plate of the additional vehicle to accelerate the additional vehicle when the additional vehicle is on the acceleration section, and also cooperates with the linear induction motor primary element of the vehicle to accelerate the vehicle when the vehicle is on the acceleration section.

27. The transportation system of claim 1 wherein the transformer further includes an additional magnet array such that one magnet array is disposed at each end of the transformer, and wherein the magnet arrays cooperate to align the transformer and the cable segment with respect to each other such that the cable segment is generally centered with respect to the transformer as the transformer moves along the cable segment.

28. The transportation system of claim 27 wherein one magnet array is rotated forty-five degrees with respect to the other magnet array.

19. A transportation system comprising:

a guideway lane including two tire strips and a reaction strip disposed between the tire strips;

a plurality of power generators;

a power cable assembly extending along the guideway lane, the cable assembly including a plurality of cable segments, each cable segment being connected to a power generator; and

a vehicle configured to travel on the tire strips of the guideway lane, the vehicle including a linear induction motor primary element and a self-centering coaxial winding transformer that is movable along the cable segments and configured to cooperate with the cable segments to transfer power to the primary element, wherein the transformer includes a Halbach magnet array that creates a magnetic field for aligning the transformer and a particular cable segment with respect to each other as the transformer moves along the particular cable segment, and wherein the primary element cooperates with the reaction strip to propel the vehicle along the guideway lane.

20. A vehicle for use on a guideway system having a guideway lane and a power cable extending along the guideway lane, the vehicle comprising:

a vehicle body; and

a transformer supported by the body and being movable along the power cable, the transformer being configured to cooperate with the power cable to transfer power to the vehicle while the vehicle is on the guideway lane, the transformer including a magnet array that creates a magnetic field for aligning the transformer and the power cable horizontally and vertically with respect to each other such that the power cable is generally centered with respect to transformer as the transformer moves along the power cable.

21. The vehicle of claim 20 wherein the transformer is a toroidal wound transformer.

22. The vehicle of claim 20 wherein the transformer is a coaxial winding transformer.

23. The vehicle of claim 20 wherein the magnet array is a Halbach magnet array.

24. The vehicle of claim 20 further comprising a linear induction motor primary element supported by the body and electrically connected to the transformer.

25. The vehicle of claim 20 further comprising an electric motor supported by the body and electrically connected to the transformer.

26. The vehicle of claim 20 further comprising a pair of front wheels supported by the vehicle body, and a mechanical stop that is engageable with at least one of the front wheels while the vehicle is on the guideway lane so as to inhibit the front wheels from turning more than a predetermined angle with respect to a longitudinal axis of the vehicle.

29. The vehicle of claim 20 wherein the transformer further includes an additional magnet array such that one magnet array is disposed at each end of the transformer, the additional magnet array being configured to create a magnetic field for aligning the transformer and the power cable with respect to each other such that the power cable is generally centered with respect to the transformer as the transformer moves along the power cable.

30. The vehicle of claim 29 wherein one magnet array is rotated forty-five degrees with respect to the other magnet array.

31. A transportation system comprising:

a guideway lane including two tire strips and a heating element for heating at least one of the tire strips;

a power cable assembly including a cable segment extending along the guideway lane; and

a vehicle configured to travel on the tire strips, the vehicle including a self-centering transformer that is movable along the cable segment and configured to cooperate with the cable segment to transfer power to the vehicle, the transformer including a magnet array that creates a magnetic field for aligning the transformer and the cable segment with respect to each other such that the cable segment is generally centered with respect to the transformer as the transformer moves along the cable segment.

32. A transportation system comprising:

a guideway lane including two tire strips and a reaction strip disposed between the tire strips, the reaction strip comprising an aluminum strip and an iron backing attached to the aluminum strip;

a power cable assembly including a cable segment extending along the guideway lane; and

a vehicle configured to travel on the tire strips, the vehicle including a self-centering transformer that is movable along the cable segment and configured to cooperate with the cable segment to transfer power to the vehicle, the transformer including a magnet array that creates a magnetic field for aligning the transformer and the cable segment with respect to each other such that the cable segment is generally centered with respect to the transformer as the transformer moves along the cable segment, the vehicle further including a linear induction primary element electrically connected to the transformer so as to receive power from the transformer, the primary element cooperating with the reaction strip to propel the vehicle along the guideway lane.

33. A transportation system comprising:

a guideway lane including two tire strips and a reaction strip disposed between the tire strips, the reaction strip comprising an aluminum strip and a low loss steel backing attached to the aluminum strip;

a power cable assembly including a cable segment extending along the guideway lane; and

a vehicle configured to travel on the tire strips, the vehicle including a self-centering transformer that is movable along the cable segment and configured to cooperate with the cable segment to transfer power to the vehicle, the transformer including a magnet array that creates a magnetic field for aligning the transformer and the cable segment with respect to each other such that the cable segment is generally centered with respect to the transformer as the transformer moves along the cable segment, the vehicle further including a linear induction primary element electrically connected to the transformer so as to receive power from the transformer, the primary element cooperating with the reaction strip to propel the vehicle along the guideway lane.

34. A transportation system comprising:

a guideway lane including two tire strips, a reaction strip disposed between the tire strips, and a gap between one tire strip and the reaction strip;

a power cable assembly including a cable segment extending along the guideway lane; and

a vehicle configured to travel on the tire strips, the vehicle including a self-centering transformer that is movable along the cable segment and configured to cooperate with the cable segment to transfer power to the vehicle, the transformer including a magnet array that creates a magnetic field for aligning the transformer and the cable segment with respect to each other such that the cable segment is generally centered with respect to the transformer as the transformer moves along the cable segment, the vehicle also including a linear induction primary element electrically connected to the transformer so as to receive power from the transformer, the primary element cooperating with the reaction strip to propel the vehicle along the guideway lane, the vehicle further including an air scoop for drawing air upwardly through the gap of the guideway lane to provide cooling air to the vehicle.

35. A vehicle for use on a guideway system having a guideway lane and a power cable extending along the guideway lane, the vehicle comprising:

a vehicle body;

a transformer supported by the body and being movable along the power cable, the transformer being configured to cooperate with the power cable to transfer power to the vehicle while the vehicle is on the guideway lane, the transformer including a magnet array that creates a magnetic field for aligning the transformer and the power cable with respect to each other such that the power cable is generally centered with respect to transformer as the transformer moves along the power cable;

a pair of front wheels supported by the vehicle body; and

a mechanical stop that is engageable with at least one of the front wheels while the vehicle is on the guideway lane so as to inhibit the front wheels from turning more than a predetermined angle with respect to a longitudinal axis of the vehicle.