SOLID STATE POWER CONTACTOR

• US 20180375327A1
• Filed: 06/27/2017
• Published: 12/27/2018
• Est. Priority Date: 06/27/2017
• Status: Active Grant

• Current Assignee: GE Aviation Systems LLC (GE Aerospace)
• Original Assignee: GE Aviation Systems LLC (GE Aerospace)
• Inventors: Eddins, Richard Anthony, Schnorr, Kenneth Howard
• Granted Patent: US 10,381,833 B2
• Time in Patent Office: Days
• CPC Class Codes: B64D 2221/00 Electric power distribution systems onboard aircraft
• CPC Class Codes: B64D 41/00 Power installations for auxiliary purposes
• CPC Class Codes: H02J 1/00 Circuit arrangements for dc mains or dc distribution networks
• CPC Class Codes: H02J 2310/44 for aircrafts
• CPC Class Codes: H03K 17/102 in field-effect transistor switches
• CPC Class Codes: H03K 17/687 the devices being field-effect transistors
• CPC Class Codes: H03K 2217/0009 AC switches, i.e. delivering AC power to a load
• CPC Class Codes: H05K 1/00 Printed circuits

Abstract

A power contactor can include a first conductive terminal, a second conductive terminal, a power overlay having a conductive backplane and solid state switches, and a controller module configured to selectively operate the solid state switches to enable conductive communication between the first conductive terminal and the second conductive terminal.

Claims

1. A power contactor, comprising:

a first conductive terminal;

a second conductive terminal;

a flexible power overlay, comprising;

a conductive backplane;

a first solid state switch having a first source terminal connected with the conductive backplane and a first drain terminal connected with the first conductive terminal; and

a second solid state switch having a second source terminal connected with the conductive backplane and a second drain terminal connected with the second conductive terminal; and

a controller module configured to selectively operate the first and second solid state switches to enable conductive communication between the first conductive terminal and the second conductive terminal;

wherein the power contactor form is adapted to be physically interchangeable with a conventional electro-mechanical contactor.

2. The power contactor of claim 1 wherein the first conductive terminal is connected with a first power distribution bus and the second conductive terminal is connected with a second power distribution bus.

3. The power contactor of claim 1 wherein at least one of the first or second conductive terminals is a semi-circular post.

4. The power contactor of claim 3 wherein the flexible power overlay is a substantially planar structure.

5. The power contactor of claim 4 wherein the flexible power overly has a first surface and a second opposing surface.

6. The power contactor of claim 5 wherein the first surface abuts the first and second solid state switches.

7. The power contactor of claim 6 wherein the flexible power overlay is wrapped about at least an outer surface portion of the first conductive terminal and at least an outer surface portion of the second conductive terminal.

8. The power contactor of claim 3 wherein the first and second conductive terminals are semi-circular posts each having at least one flat surface, and the first and second semi-circular posts are arranged with the respective flat surfaces proximate to one another.

9. The power contactor of claim 8 wherein the first and second semi-circular posts are spaced by a gap.

10. The power contactor of claim 9 wherein the controller module is disposed within the gap.

11. The power contactor of claim 1 wherein at least one of the first or second solid state switch includes a set of solid state switches.

12. The power contactor of claim 11 wherein the number of solid state switches in the set of solid state switches is related to at least one of a desired voltage rating or a desired power rating for the power contactor.

13. The power contactor of claim 11 wherein the set of solid state switches are electrically arranged in parallel.

14. The power contactor of claim 1, further comprising a thermally conductive baseplate and wherein the first and second conductive terminals are supported by the baseplate.

15. The power contactor of claim 14, further comprising a thermally conductive and electrically insulating layer disposed between the first and second conductive terminals and the baseplate.

16. The power contactor of claim 1 wherein the flexible power overlay is adapted to match the contours of at least one of the first or second conductive terminals.

17. A solid state power contactor for a power distribution system, comprising

a first contactor terminal;

a second contactor terminal;

a flexible power overlay adapted to conform to the first contactor terminal and the second contactor terminal and supporting a set of solid state switches selectably connecting the first contactor terminal with the second contactor terminal; and

a controller module configured to selectively operate the set of solid state switches to electrically connect the first contactor terminal with the second contactor terminal;

wherein the form of the power contactor is adapted to be spatially equivalent to or less than a conventional electro-mechanical contactor.

18. The solid state power contactor of claim 17 wherein the set of solid state switches includes a first set of solid state switches conductively associated with the first contactor terminal and a second set of solid state switches conductive associated with the second contactor terminal.

19. The solid state power contactor of claim 17 wherein the solid state contactor is physically interchangeable with the conventional electro-mechanical contactor.

20. The solid state power contactor of claim 17 wherein the solid state power contactor is electrically interchangeable with the conventional electro-mechanical contactor of a legacy aircraft.