COMPRESSOR PROTECTION SYSTEM AND METHOD
First Claim
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1. A system comprising:
- a compressor driven by an inverter drive that modulates a frequency of electric power delivered to said compressor to modulate a speed of said compressor, said inverter drive being cooled by refrigerant and including a temperature sensor that outputs an inverter temperature signal corresponding to an inverter temperature;
a control module that receives said inverter temperature signal, that compares said inverter temperature with a predetermined threshold, and that reduces a compressor operating speed range when said inverter temperature is greater than said predetermined threshold.
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Abstract
A system and method for protecting a variable speed compressor may include an inverter drive that modulates a frequency of electric power delivered to the compressor to modulate a speed of the compressor. The inverter drive may be cooled by refrigerant and include a temperature sensor that outputs an inverter temperature signal corresponding to an inverter temperature. A control module may receives the inverter temperature signal, compare the inverter temperature with a predetermined threshold, and reduce a compressor operating speed range when the inverter temperature is greater than the predetermined threshold.
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Citations
10 Claims
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1. A system comprising:
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a compressor driven by an inverter drive that modulates a frequency of electric power delivered to said compressor to modulate a speed of said compressor, said inverter drive being cooled by refrigerant and including a temperature sensor that outputs an inverter temperature signal corresponding to an inverter temperature; a control module that receives said inverter temperature signal, that compares said inverter temperature with a predetermined threshold, and that reduces a compressor operating speed range when said inverter temperature is greater than said predetermined threshold. - View Dependent Claims (2, 3, 4, 5)
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6. A method comprising:
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modulating a speed of a compressor with an inverter drive that modulates a frequency of electric power delivered to said compressor, said inverter drive being cooled by refrigerant; receiving an inverter temperature signal corresponding to a temperature of said inverter drive; comparing said temperature of said inverter drive with a predetermined threshold; and reducing a compressor operating speed range of said compressor when said temperature is greater than said threshold. - View Dependent Claims (7, 8, 9, 10)
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Specification