RESONATORS AND THEIR COUPLING CHARACTERISTICS FOR WIRELESS POWER TRANSFER VIA MAGNETIC COUPLING

• US 20100327660A1
• Filed: 08/26/2010
• Published: 12/30/2010
• Est. Priority Date: 07/12/2005
• Status: Abandoned Application

• Current Assignee: Massachusetts Institute of Technology
• Original Assignee: Massachusetts Institute of Technology
• Inventors: Karalis, Aristeidis, Soljacic, Marin, Moffatt, Robert, Kurs, Andre B., Joannopoulos, John D., Fisher, Peter H.
• Application Number:
  US12/868,852
• Publication Number:
  US 20100327660A1
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: B60L 2210/20 AC to AC converters
• CPC Class Codes: B60L 53/126 Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H01Q 9/04 Resonant antennas
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• 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
• CPC Class Codes: Y10T 29/4902 Electromagnet, transformer or inductor

Abstract

Described herein are embodiments of a method of forming a wireless power system that includes first optimizing a first parameter of wireless power transmission between at least one high-Q source resonator and at least one high-Q receiver resonator and second optimizing a second parameter of said wireless power transmission.

Claims

1. A method of forming a wireless power system, comprising:

first optimizing a first parameter of wireless power transmission between at least one high-Q source resonator and at least one high-Q receiver resonator; and

second optimizing a second parameter of said wireless power transmission.

2. A method as in claim 1, wherein said first parameter or said second parameter comprises the efficiency of power transmission.

3. A method as in claim 1, wherein said first parameter or said second parameter comprises the amount of transmitted power.

4. A method as in claim 1, wherein said first parameter or said second parameter comprises the frequency of said source resonator.

5. A method as in claim 1, wherein said first parameter or said second parameter comprises the frequency of said receive resonator.

6. A method as in claim 1, wherein said first parameter or said second parameter comprises the radiated power of said power transmission.

7. A method as in claim 1, wherein said first parameter or said second parameter comprises the work drainage rate.

8. A method as in claim 1, wherein said first parameter or said second parameter comprises a voltage in the source resonator.

9. A method as in claim 1, wherein said first parameter or said second parameter comprises a voltage in the receiver resonator.

10. A method as in claim 1, wherein said first parameter or said second parameter comprises a current in the source resonator.

11. A method as in claim 1, wherein said first parameter or said second parameter comprises a current in the receiver resonator.

12. A method as in claim 1, wherein said first parameter or said second parameter comprises a power level in the source resonator.

13. A method as in claim 1, wherein said first parameter or said second parameter comprises a distance between the source resonator and the receiver resonator.

14. A method as in claim 1, wherein said first parameter or said second parameter comprises an orientation between the source resonator and the receiver resonator.

15. A method as in claim 1, wherein said first parameter or said second parameter comprises an alignment between the source resonator and the receiver resonator.

16. A method as in claim 1, wherein said first parameter or said second parameter comprises a resistance in the source resonator.

17. A method as in claim 1, wherein said first parameter or said second parameter comprises a resistance in the receiver resonator.

18. A method as in claim 1, wherein said first parameter or said second parameter comprises a dimension of the conducting loop in the receiver resonator.

19. A method as in claim 1, wherein said first parameter or said second parameter comprises a dimension of the conducting loop in the source resonator.

20. A system for receiving power wirelessly from at least one high-Q source resonator, comprising:

at least one high-Q receiver resonator of wireless power, including an inductor, a capacitor, and a connection to a load, wherein said receiver has values that are determined by optimizing at least one parameter of the wireless power transmission.

21. A system as in claim 20, wherein said at least one parameter comprises the efficiency of power transmission.

22. A system as in claim 20, wherein said at least one parameter comprises the amount of transmitted power.

23. A system as in claim 20, wherein said at least one parameter comprises the frequency of said source resonator.

24. A system as in claim 20, wherein said at least one parameter comprises the frequency of said receiver resonator.

25. A system as in claim 20, wherein said at least one parameter comprises the radiated power of said power transmission.

26. A system as in claim 20, wherein said at least one parameter comprises a work drainage rate.

27. A system as in claim 20, wherein said at least one parameter comprises a voltage in the source resonator.

28. A system as in claim 20, wherein said at least one parameter comprises a voltage in the receiver resonator.

29. A system as in claim 20, wherein said at least one parameter comprises a current in the source resonator.

30. A system as in claim 20, wherein said at least one parameter comprises a current in the receiver resonator.

31. A system as in claim 20, wherein said at least one parameter comprises a power level in the source resonator.

32. A system as in claim 20, wherein said at least one parameter comprises a distance between the source resonator and the receiver resonator.

33. A system as in claim 20, wherein said at least one parameter comprises an orientation between the source resonator and the receiver resonator.

34. A system as in claim 20, wherein said at least one parameter comprises an alignment between the source resonator and the receiver resonator.

35. A system as in claim 20, wherein said at least one parameter comprises a resistance in the source resonator.

36. A system as in claim 20, wherein said at least one parameter comprises a resistance in the receiver resonator.

37. A system as in claim 20, wherein said at least one parameter comprises a dimension of the conducting loop in the receiver resonator.

38. A system as in claim 20, wherein said at least one parameter comprises a dimension of the conducting loop in the source resonator.

39. A method of transferring wireless power, comprising:

optimizing at least one parameter of the wireless power transmission between at least one high-Q source resonator and one high-Q receiver resonator, to achieve a desired system performance.

40. A method as in claim 39, wherein said at least one parameter comprises the efficiency of power transmission.

41. A method as in claim 39, wherein said at least one parameter comprises the amount of transmitted power.

42. A method as in claim 39, wherein said at least one parameter comprises the frequency of said source resonator.

43. A method as in claim 39, wherein said at least one parameter comprises the frequency of said receiver resonator.

44. A method as in claim 39, wherein said at least one parameter comprises the radiated power of said power transmission.

45. A method as in claim 39, wherein said at least one parameter comprises a work drainage rate.

46. A method as in claim 39, wherein said at least one parameter comprises a voltage in the source resonator.

47. A method as in claim 39, wherein said at least one parameter comprises a voltage in the receiver resonator.

48. A method as in claim 39, wherein said at least one parameter comprises a current in the source resonator.

49. A method as in claim 39, wherein said at least one parameter comprises a current in the receiver resonator.

50. A method as in claim 39, wherein said at least one parameter comprises a power level in the source resonator.

51. A method as in claim 39, wherein said at least one parameter comprises a distance between the source resonator and the receiver resonator.

52. A method as in claim 39, wherein said at least one parameter comprises an orientation between the source resonator and the receiver resonator.

53. A method as in claim 39, wherein said at least one parameter comprises an alignment between the source resonator and the receiver resonator.

54. A method as in claim 39, wherein said at least one parameter comprises a resistance in the source resonator.

55. A method as in claim 39, wherein said at least one parameter comprises a resistance in the receiver resonator.

56. A method as in claim 39, wherein said at least one parameter comprises a dimension of the conducting loop in the receiver resonator.

57. A method as in claim 39, wherein said at least one parameter comprises a dimension of the conducting loop in the source resonator.

58. A system for transmitting power wirelessly to at least one high-Q receiver resonator, comprising:

at least one high-Q source resonator, including an inductor, a capacitor, and an optional connection to a power supply, wherein said source has values that are determined by optimizing at least one parameter of the wireless power transmission.

59. A system as in claim 58, wherein said at least one parameter comprises the frequency of said source resonator.

60. A system as in claim 58, wherein said at least one parameter comprises the frequency of said receiver resonator.

61. A system as in claim 58, wherein said at least one parameter comprises the radiated power of said power transmission.

62. A system as in claim 58, wherein said at least one parameter comprises a work drainage rate.

63. A system as in claim 58, wherein said at least one parameter comprises a voltage in the source resonator.

64. A system as in claim 58, wherein said at least one parameter comprises a voltage in the receiver resonator.

65. A system as in claim 58, wherein said at least one parameter comprises a current in the source resonator.

66. A system as in claim 58, wherein said at least one parameter comprises a current in the receiver resonator.

67. A system as in claim 58, wherein said at least one parameter comprises a power level in the source resonator.

68. A system as in claim 58, wherein said at least one parameter comprises a distance between the source resonator and the receiver resonator.

69. A system as in claim 58, wherein said at least one parameter comprises an orientation between the source resonator and the receiver resonator.

70. A system as in claim 58, wherein said at least one parameter comprises an alignment between the source resonator and the receiver resonator.

71. A system as in claim 58, wherein said at least one parameter comprises a resistance in the source resonator.

72. A system as in claim 58, wherein said at least one parameter comprises a resistance in the receiver resonator.

73. A system as in claim 58, wherein said at least one parameter comprises a dimension of the conducting loop in the receiver resonator.

74. A system as in claim 58, wherein said at least one parameter comprises a dimension of the conducting loop in the source resonator.

75. A system as in claim 58, wherein said at least one parameter comprises the efficiency of power transmission.

76. A system as in claim 58, wherein said at least one parameter comprises the amount of transmitted power.