COMPRESSOR PROTECTION SYSTEM AND METHOD
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United States of America Patent
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Issued Date -
Apr 9, 2009
app pub date -
Oct 7, 2008
filing date -
Oct 8, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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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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