Contactless power transfer system

• US 8,441,153 B2
• Filed: 06/22/2010
• Issued: 05/14/2013
• Est. Priority Date: 06/22/2010
• Status: Active Grant

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Bohori, Adnan Kutubuddin, Ramachandrapanicker, Somakumar, Sihler, Christof Martin, Tiwari, Arvind Kumar, Bhat, Suma Memana Narayana
• Primary Examiner(s): Barnie, Rexford
• Assistant Examiner(s): Zhang, Haihui
• Application Number:
  US12/820,208
• Publication Number:
  US 20110309687A1
• Time in Patent Office: 1,057 Days
• Field of Search: 307/104, 307/64
• US Class Current: 307/104
• CPC Class Codes: E21B 33/0385 electrical connectors
• CPC Class Codes: H02J 4/00 Circuit arrangements for mains or distribution networks not specified as ac or dc
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• 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 5/26 using coils
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A system comprising a contactless power transfer system is presented. The system includes a primary element, a secondary element, and at least one field-focusing element interposed between the primary element and the secondary element and configured to focus a magnetic field. A partition is disposed between the primary element and the secondary element. The contactless power transfer system is disposed within pressure isolation cavities of a sub-sea assembly and configured to transfer power between a power source and a load.

Claims

1. A system comprising:

a contactless power transfer system comprising a primary element, a secondary element, and at least one field-focusing element interposed between the primary element and the secondary element and configured to focus a magnetic field;

a partition disposed between the primary element and the secondary element,

wherein the contactless power transfer system is disposed within pressure isolation cavities of a sub-sea assembly and configured to transfer power between a power source and a load.

2. The system of claim 1, wherein the contactless power transfer system is disposed within a non-conducting magnetic shield.

3. The system of claim 1, wherein the partition comprises a non-magnetic and non-conducting material.

4. The system of claim 1, wherein the primary element is coupled to the power source and the secondary element is coupled to the load.

5. The system of claim 1, wherein the contactless power transfer system is configured to exchange data between the load and the power source.

6. The system of claim 1, wherein the field-focusing element comprises one or more resonators.

7. The system of claim 6, wherein the field-focusing element comprises at least two unique resonant frequencies.

8. The system of claim 7, wherein one of the resonant frequencies is configured to transfer power and another of the resonant frequencies is configured to transfer data.

9. The system of claim 1, wherein the contactless power transfer system further provides a voltage transformation between the primary element and the secondary element.

10. The system of claim 1 further comprising a plurality of contactless power transfer systems coupled in cascade to transfer power.

11. A system comprising:

a contactless power transfer system disposed within pressure isolation cavities comprising

a primary element,

a secondary element,

a first field-focusing element disposed proximate the primary element, and

a second field-focusing element disposed proximate the secondary element,

the first and second field-focusing elements being configured for operating at two different resonant frequencies to focus a magnetic field and exchange power between the primary element and the secondary element.

12. The system of claim 11, further comprises non-conducting and magnetically shielded cavities to host the contactless power transfer system.

13. The system of claim 11, wherein the primary element is coupled to a power source and control module and configured to exchange power and data.

14. The system of claim 11, wherein the secondary element is coupled to a load and configured to exchange power and data.

15. A contactless power transfer system comprising:

a primary element;

a power source and a first filter coupled to the primary element and configured to transmit power at a first resonant frequency;

a secondary element;

a first converter and a rectifier coupled to the secondary element and configured to deliver power to a load;

one or more sensors and second filters coupled to the secondary element and configured to sense at least one parameter and transmit data at a second resonant frequency;

at least two field-focusing elements interposed between the primary element and the secondary element, a first field-focusing element configured for transmitting power at the first resonant frequency and a second field-focusing element configured for transmitting data at the second resonant frequency; and

a second converter coupled to the primary element to receive data from the one or more sensors.

16. The contactless power transfer system of claim 15, wherein the power source is further coupled to an inverter.

17. The contactless power transfer system of claim 16, wherein the inverter modulates the power from the power source.

18. The contactless power transfer system of claim 17, wherein the first converter demodulates the power received from the power source.

19. The contactless power transfer system of claim 15, wherein the load comprises one or more sensors to sense a plurality of parameters within a well bore.

20. The contactless power transfer system of claim 15, wherein each of the at least two or more field-focusing elements comprises a plurality of resonators.