Phase change cooled electrical resistor
First Claim
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1. An electrical resistor assembly comprising:
- an electrical resistor; and
a phase change heat spreader disposed adjacent to the resistor and configured to draw heat from the resistor during operation via phase changes in a cooling medium within the phase change heat spreader.
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Abstract
A technique is disclosed for cooling resistive elements, such as brake resistors used in motor drives, as well as other resistors. A phase change heat spreader is thermally coupled to the resistive element and a continuous phase change cycle takes place in the heat spreader to extract heat from the resistive element. The element and heat spreader may be packaged as a modular unit or may be integrated into a system.
11 Citations
13 Claims
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1. An electrical resistor assembly comprising:
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an electrical resistor; and a phase change heat spreader disposed adjacent to the resistor and configured to draw heat from the resistor during operation via phase changes in a cooling medium within the phase change heat spreader. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for making an electrical resistor assembly comprising:
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disposing an electrical resistor in an enclosure; and disposing a phase change heat spreader adjacent to the enclosure, the phase change heat spreader being configured to draw heat from the resistor during operation via phase changes in a cooling medium within the phase change heat spreader. - View Dependent Claims (10, 11, 12, 13)
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Specification