Energy supply unit for transmitting auxiliary energy to an electrical device

• US 7,221,066 B2
• Filed: 06/02/2001
• Issued: 05/22/2007
• Est. Priority Date: 08/14/2000
• Status: Expired due to Fees

• Current Assignee: Converteam GmbH (Danaher Corporation)
• Original Assignee: Alstom SA
• Inventors: Jakob, Roland, Junge, Guenter, Rudniski, David
• Primary Examiner(s): Jackson; Stephen W.
• Assistant Examiner(s): AMAYA, CARLOS DAVID
• Application Number:
  US10/344,766
• Publication Number:
  US 20040084973A1
• Time in Patent Office: 2,180 Days
• Field of Search: 307/104
• US Class Current: 307/104
• CPC Class Codes: H01F 27/2804 Printed windings
• CPC Class Codes: H02J 11/00 Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed or converted
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H05K 1/165 incorporating printed inductors

Abstract

An energy supply unit includes a primary coil which is at least indirectly connected to an energy source. In a secondary coil which is at least indirectly connected to the control circuit, and an insulating section formed between the primary coil and the secondary coil. The auxiliary energy is transmitted via the insulating section by way of a magnetic alternating field. The energy supply unit further includes a first carrier plate, a primary coil embodied as a flat coil situated on the first carrier plate, a second carrier plate, and a secondary coil embodied as a flat coil situated on the second carrier plate. The insulating section is embodied as an interferric space formed between the primary coil and the secondary coil.

Claims

1. An energy supply unit for transmitting auxiliary energy for a control circuit in a medium or high voltage facility, comprising:

a primary coil being at least indirectly in connection with an energy source;

a secondary coil being at least indirectly in connection with a control circuit; and

an insulating section installed between the primary coil and the secondary coil, over which the transmission of auxiliary energy takes place by way of a magnetic alternating field,

wherein the primary coil is constructed as a flat coil and installed on a first supporting plate, and the secondary coil is constructed as a flat coil and installed on a second supporting plate, the two supporting plates being arranged at a defined distance from each other, and the insulating section is constructed as an air gap formed between the primary coil and the secondary coil,

wherein an insulating plate is arranged in the air gap between the supporting plates which has a larger surface than the supporting plates, whereby the edges of the insulating plate laterally project over the edges of the supporting plates.

2. The energy supply unit according to claim 1, wherein the auxiliary energy is formed as a direct voltage (U_v), an oscillator circuit is arranged between the energy source and the primary coil which generates an alternating voltage from an input direct voltage (U_d) of the energy source for feeding the primary coil, and a circuit for rectifying the output voltage (U_v) is arranged between the secondary coil and the control circuit.

3. The energy supply unit according to claim 2, wherein the circuit stabilizes or smoothes the output voltage (U_v).

4. The energy supply unit according to claim 3, wherein the alternating voltage has an at least approximately sinusoid course.

5. The energy supply unit according to claim 3, wherein the oscillator circuit has a capacitor for compensating for reactive power.

6. The energy supply unit according to claim 3, wherein the primary coil and the secondary coil are installed in a spiral manner on the supporting plates.

7. The energy supply unit according to claim 2, wherein the alternating voltage has an at least approximately sinusoid course.

8. The energy supply unit according to claim 7, wherein the oscillator circuit has a capacitor for compensating for reactive power.

9. The energy supply unit according to claim 7, wherein the primary coil and the secondary coil are installed in a spiral manner on the supporting plates.

10. The energy supply unit according to claim 2, wherein the oscillator circuit has a capacitor for compensating for reactive power.

11. The energy supply unit according to claim 10, wherein the primary coil and the secondary coil are installed in a spiral manner on the supporting plates.

12. The energy supply unit according to claim 2, wherein the primary coil and the secondary coil are installed in a spiral manner on the supporting plates.

13. The energy supply unit according to claim 1, wherein the primary coil and the secondary coil are installed in a spiral manner on the supporting plates.

14. The energy supply unit according to claim 13, wherein the supporting plates are arranged relative to each other such that a center point of the primary coil is arranged opposite a center point of the secondary coil.

15. The energy supply unit according to claim 1, wherein the supporting plates are uniformly spaced apart from one another in the region of the primary coil and the secondary coil.

16. The energy supply unit according to claim 1, wherein spacers are arranged between one of the supporting plates and between the supporting plates and the insulating plate.

17. The energy supply unit according to claim 16, wherein the supporting plates are fastened to the spacers.

18. The energy supply unit according to claim 17, wherein the spacers are provided between one of the supporting plates and the supporting plates and the insulating plate.

19. The energy supply unit according to claim 16, wherein the spacers are provided between one of the supporting plates and the supporting plates and the insulating plate.

20. The energy supply unit according to claim 19, wherein the spacers arranged between the first supporting plate and the insulating plate and the spacers arranged between the second supporting plate and the insulating plate are fastened staggered in relation to one another on the insulating plate.

21. The energy supply unit according to claim 1, wherein a further coil installed on the first supporting plate as a flat coil is arranged in a region of the magnetic alternating field which is connected to a control unit.

22. An energy supply unit for transmitting auxiliary energy for a control circuit in a medium or high voltage facility, comprising:

a primary coil being at least indirectly in connection with an energy source;

a secondary coil being at least indirectly in connection with a control circuit; and

an insulating section installed between the primary coil and the secondary coil, over which the transmission of auxiliary energy takes place by way of a magnetic alternating field,

wherein the primary coil is constructed as a flat coil and installed on a first supporting plate, and the secondary coil is constructed as a flat coil and installed on a second supporting plate, the two supporting plates being arranged at a defined distance from each other, and the insulating section is constructed as an air gap formed between the primary coil and the secondary coil,

wherein at least one insulating plate is arranged in the air gap between the supporting plates, and

wherein an insulating plate is arranged in the air gap between the supporting plates which has a larger surface than the supporting plates, whereby the edges of the insulating plate laterally project over the edges of the supporting plates.