Integrated water current connection for motor drive

• US 8,699,210 B2
• Filed: 05/30/2008
• Issued: 04/15/2014
• Est. Priority Date: 05/31/2007
• Status: Active Grant

• Current Assignee: Innomotics GmbH
• Original Assignee: Siemens Industry Incorporated (Siemens AG)
• Inventors: Aiello, Marc F., Hammond, Peter Willard, Cheesman, Edward Alan, Jordan, Wayne Sheldon, Kunkle, Jonathan
• Primary Examiner(s): Vortman, Anatoly
• Application Number:
  US12/129,895
• Publication Number:
  US 20080295998A1
• Time in Patent Office: 2,146 Days
• Field of Search: 361/679, 361676-678, 361/698, 361/699, 361/701, 174/15.1, 174/15.6, 165/104.28
• US Class Current: 361/676
• CPC Class Codes: F28D 15/00 Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies F28D17/00, F28D19/00, F28D20/00 take precedence
• CPC Class Codes: H02M 7/003 Constructional details, e.g. physical layout, assembly, wiring or busbar connections
• CPC Class Codes: H05K 7/20 Modifications to facilitate cooling, ventilating, or heating
• CPC Class Codes: H05K 7/2089 for power electronics, e.g. for inverters for controlling motor
• CPC Class Codes: H05K 7/20927 Liquid coolant without phase change

Abstract

A system for cooling a multi-cell power supply, the system including a water pump, a water-to-air heat exchanger in fluid communication with the water pump, and a supply water manifold in fluid connection with the water-to-air-heat exchanger. The system further includes a plurality of power cells in fluid communication with the supply water manifold via one or more water hoses, and a multi-winding device in fluid communication with the plurality of power cells via at least one water-cooled bus, wherein the at least one water cooled bus electrically connects the power cells to secondary windings of the multi-winding device. The water-cooled buses provide both electrical current as well as cooling fluid to each winding of the multi-winding device, thereby eliminating a need for separate cooling and power connections.

Claims

1. A system for cooling a multi-cell power supply, the system comprising:

a water pump;

a heat exchanger in fluid communication with the water pump;

a plurality of power cells in fluid communication with the heat exchanger, wherein each of the power cells generates heat and forms a first heat source;

a plurality of water-cooled buses operably connected to the plurality of power cells; and

a multi-winding device comprising;

a primary winding, and

a plurality of secondary windings for supplying power to the plurality of power cells, wherein the secondary windings generate heat and form a second heat source and wherein each of the secondary windings is fluidly connected to the plurality of power cells via one of the plurality of water-cooled buses such that water is received by the plurality of secondary windings from the heat exchanger via the plurality of power cells thereby cooling the power cells and the secondary windings and wherein each of the secondary windings provides electric current to the plurality of power cells for generating electric power in the power cells via one of the plurality of water-cooled buses.

2. The system of claim 1, further comprising a supply water manifold in fluid communication with the heat exchanger and the power cells.

3. The system of claim 2, further comprising a hose connected to the supply water manifold and at least one of the power cells.

4. The system of claim 1, further comprising a local manifold in fluid communication with one of the power cells and connected to three of the water-cooled buses.

5. The system of claim 4, wherein said local manifold distributes said water amongst said three of the water-cooled buses.

6. The system of claim 5, wherein each of said three of the water-cooled buses is in fluid connection with one of said secondary windings.

7. The system of claim 1, further comprising a return water manifold in fluid communication with the multi-winding device and the water pump.

8. The system of claim 1, wherein said heat exchanger is a water-to-air heat exchanger.

9. The system of claim 1, wherein each of the plurality of water-cooled buses includes a connector comprising a self-sealing valve.

10. The system of claim 1, wherein the heat exchanger is a forced cooled water heat exchanger.

11. A system for cooling a multi-cell power supply, the system comprising:

a water pump;

a heat exchanger in fluid communication with the water pump;

a supply water manifold in fluid connection with the heat exchanger;

a plurality of power cells in fluid communication with the supply water manifold, wherein each of the power cells generates heat and forms a first heat source;

a plurality of water-cooled buses operably connected to the plurality of power cells; and

a multi-winding device comprising;

a primary winding, and

a plurality of secondary windings for supplying power to the plurality of power cells, wherein the secondary windings generate heat and form a second heat source and wherein each of the secondary windings is fluidly connected to the plurality of power cells via one of the plurality of water-cooled buses such that water is received by the plurality of secondary windings from the heat exchanger via the plurality of power cells thereby cooling the power cells and the secondary windings and wherein each of the secondary windings provides electric current to the plurality of power cells for generating electric power in the power cells via one of the plurality of water-cooled buses.

12. The system of claim 11, further comprising a local manifold in fluid connection with at least one of said power cells and connected to three water-cooled buses.

13. The system of claim 12, wherein said local manifold distributes the water amongst said three of the water-cooled buses.

14. The system of claim 13, wherein each of said three of the water-cooled buses is in fluid connection with one of said secondary windings.

15. The system of claim 11, further comprising a return water manifold in fluid communication with the multi-winding device and the water pump.

16. The system of claim 11, wherein the heat exchanger is a water-to-air heat exchanger.

17. The system of claim 11, wherein the heat exchanger is a forced cooled water heat exchanger.

18. A method of operating a multi-winding power device, comprising:

delivering power from a plurality of power cells to a multi-winding power device via at least one of a plurality of water-cooled buses, wherein each of the power cells generates heat and forms a first heat source;

receiving power at the multi-winding device, wherein the multi-winding device comprises a plurality of secondary windings for supplying power to the plurality of power cells, wherein the secondary windings generate heat and form a second heat source and wherein each of the secondary windings is fluidly connected to the plurality of power cells via at least one of the plurality of water-cooled buses such that water is received by the plurality of secondary windings from the heat exchanger via the plurality of power cells thereby cooling the power cells and the secondary windings and wherein each of the secondary windings provides electric current to the plurality of power cells for generating power in the power cells via one of the plurality of water-cooled buses; and

circulating water within the plurality of water-cooling buses to the plurality of power cells and the multi-winding device while the delivering occurs.

19. The method of claim 18, further comprising distributing the water to each of the plurality of the power cells so that the water warms by absorbing heat from each of the plurality of the power cells.

20. The method of claim 19 further comprising:

circulating the warmed water to the heat exchanger that cools the water; and

re-distributing the cooled water to at least one power cell.