DOUBLE CONDUCTOR SINGLE PHASE INDUCTIVE POWER TRANSFER TRACKS

• US 20140252870A1
• Filed: 07/19/2012
• Published: 09/11/2014
• Est. Priority Date: 07/19/2011
• Status: Active Grant

• Current Assignee: Auckland UniServices Limited (Auckland University)
• Original Assignee: Auckland UniServices Limited (Auckland University)
• Inventors: Covic, Grant Anthony, Raabe, Stefan
• Granted Patent: US 10,971,300 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: B60L 2210/10 DC to DC converters
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2270/147 electro magnetic [EMI]
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• CPC Class Codes: B60L 53/30 Constructional details of charging stations
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 3/00 Circuit arrangements for ac mains or ac distribution networks
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• 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: Y02T 90/14 Plug-in electric vehicles

Abstract

An IPT track arrangement including a power supply and conductor electrically connected to the power supply, the conductor includes a plurality of loops located substantially adjacent one another, wherein the polarity in adjacent portions of the loops is the same, and wherein the power supply includes a one or more inverters which share the track load.

Claims

1. An IPT track arrangement including a power supply and conductor means electrically connected to the power supply, the conductor means including a plurality of loops located substantially adjacent one another, wherein the polarity in adjacent portions of the loops is the same, and wherein the power supply includes one or more inverters.

2. An IPT track arrangement as claimed in claim 1 wherein the power supply includes a plurality of inverters arranged to share the load on the track arrangement.

3. An IPT track arrangement as claimed in claim 2 wherein the inverters are electrically connected together in parallel.

4. An IPT track arrangement as claimed in claim 1 wherein the conductor means includes a single conductor, and wherein, in forming the loops, the conductor overlaps itself at a plurality of points.

5. An IPT track arrangement as claimed in claim 1 wherein the distance between adjacent loops is substantially smaller than the width of the loop.

6. An IPT track arrangement as claimed in claim 1 wherein the plurality of loops includes at least two loops.

7. An IPT track arrangement as claimed in claim 1 wherein the plurality of loops comprises at least three loops.

8. An IPT system including an IPT track arrangement having a power supply and conductor means electrically connected to the power supply, the conductor means including a plurality of loops located substantially adjacent one another, wherein the polarity in adjacent portions of the loops is the same, and an IPT pickup.

9. An IPT system as claimed in claim 8 wherein the IPT pickup includes a plurality of coils.

10. An IPT system as claimed in claim 8 wherein the IPT pickup is adapted to receive components of the magnetic flux generated by the IPT track arrangement that are in spatial quadrature.

11. An IPT system as claimed in claim 9 where one coil is adapted to receive a first component of magnetic flux generated by the IPT track arrangement and another coil is adapted to receive a second component of magnetic flux generated by the IPT track arrangement, the components being in spatial quadrature.

12. An IPT system as claimed in claim 11 wherein two coils are adapted to receive the first component and one coil is adapted to receive the second component.

13. An IPT system as claimed in claim 9 wherein the coils are mutually decoupled.

14. An IPT system as claimed in claim 8 wherein the power supply includes a plurality of inverters arranged to share the load on the track arrangement.

15. An IPT system as claimed in claim 8 wherein the conductor means includes a single conductor, and wherein, in forming the loops, the conductor overlaps itself at a plurality of points.

16. (canceled)