COOLING AND CONTROLLING ELECTRONICS

• US 20130027848A1
• Filed: 07/29/2011
• Published: 01/31/2013
• Est. Priority Date: 07/29/2011
• Status: Active Grant

• Current Assignee: Hamilton Sundstrand Corporation (Rtx Corporation)
• Original Assignee: Hamilton Sundstrand Corporation (Rtx Corporation)
• Inventors: Said, Waleed M.
• Granted Patent: US 8,531,822 B2
• Time in Patent Office: Days
• US Class Current: 361/677
• CPC Class Codes: H02M 1/327 against abnormal temperatures
• CPC Class Codes: H02M 7/003 Constructional details, e.g. physical layout, assembly, wiring or busbar connections
• CPC Class Codes: H05K 7/1432 specially adapted for power drive units or power converters
• CPC Class Codes: H05K 7/14325 for cabinets or racks
• CPC Class Codes: H05K 7/20927 Liquid coolant without phase change

Abstract

A power electronics rack includes a switching chamber provided with one or more plate heat exchangers to receive a cooling fluid. A contactor chamber has contactors for connecting switches in the switching chamber to a magnetics chamber. The magnetics chamber receives at least one of a filter, an inductor or a transformer. The magnetics chamber receives cooling fluid which directly contacts the at least one of a filter, an inductor and a transformer for cooling. A common cooling circuit delivers cooling fluid to both the switching and magnetics chambers. The contactors may be reconfigured under certain conditions.

Claims

1. A power electronics rack comprising:

a switch chamber having switches and a heat exchanger to receive a cooling fluid;

a contactor chamber having contactors for connecting the switches in the switch chamber to components in a magnetics chamber, and said magnetics chamber components including at least one of a filter, an inductor or a transformer, and said magnetics chamber receiving said cooling fluid which directly contacts said at least one of a filter, an inductor and a transformer for cooling; and

a common cooling circuit for delivering said cooling fluid to said heat exchanger, and for directly contacting said at least one of a filter, an inductor and a transformer.

2. The power electronics rack as set forth in claim 1, wherein there are provisions to receive a plurality of switches in the switch chamber, and said contactors connecting said switches to one or more of the components in the magnetics chamber.

3. The power electronics rack as set forth in claim 1, wherein a controller for the switches is mounted in the switch chamber.

4. A power electronics rack as set forth in claim 1, wherein said cooling fluid exits the heat exchanger and then is delivered directly into the magnetics chamber.

5. The power electronics rack as set forth in claim 4, wherein said cooling fluid is sprayed directly onto the components in the magnetics chamber.

6. The power electronics rack as set forth in claim 4, wherein said magnetics chamber is flooded with said cooling fluid.

7. The power electronics rack as set forth in claim 1, wherein said contactor chamber is also provided with a heat exchanger.

8. The power electronics rack as set forth in claim 1, wherein said switches in said switch chamber generally include a switch, a storage system, and a gate drive to communicate and receive signals from a controller.

9. The power electronics rack as set forth in claim 8, wherein said controller is mounted in said switch chamber.

10. The power electronics rack as set forth in claim 1, wherein said contactor chamber includes selective contactors such that a controller can actuate to reconfigure the provision of power to components in the magnetics chamber from the switches based upon a particular need.

11. The power electronics rack as set forth in claim 10, wherein said contactors can selectively connect a switch in the switch chamber directly to a first lower power motor, and can combine a plurality of the switches in the switch chamber to a single, larger motor to provide adequate power.

12. A power electronics rack comprising:

power converters including a switch, a storage system, and a gate drive, said gate drive communicating with a controller;

a plurality of contactors, said contactors also communicating with said controller, and being operable to be changed by said controller to communicate said power converters to magnetic components; and

said magnetic components communicating with a plurality of motors, said controller being operable to change a configuration of said contactors to reconfigure how power is supplied to the magnetic components from said power converters.

13. The power electronics rack as set forth in claim 12, wherein said contactors can selectively connect a switch directly to a first lower power motor, and can combine a plurality of the switches to a single, larger motor to provide adequate power.

14. A method of operating a power electronics rack comprising the steps of:

providing a plurality of power converters including switches for supplying power, said power converters being connected through contactors, with said contactors being able to be controlled to change a downstream direction for power from said power converters, magnetic components being positioned downstream of said contactors, with said magnetic components communicating with a plurality of motors; and

a configuration of the contactors being changed to change the supply of power from the power converters to the plurality of motors.

15. The method as set forth in claim 14, wherein said contactors selectively connect a power converter directly to a first lower power motor, and can combine a plurality of the power converters to a single, larger motor to provide adequate power.