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SYSTEM AND METHOD FOR CALIBRATING PARAMETERS FOR A REFRIGERATION SYSTEM WITH A VARIABLE SPEED COMPRESSOR

  • US 20090094997A1
  • Filed: 10/07/2008
  • Published: 04/16/2009
  • Est. Priority Date: 10/08/2007
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a compressor connected to a condenser and an evaporator;

    a condenser sensor that outputs a condenser signal corresponding to at least one of a sensed condenser pressure and a sensed condenser temperature;

    an inverter drive that modulates a frequency of electric power delivered to said compressor to modulate a speed of said compressor;

    a control module connected to said inverter drive that determines a measured condenser temperature based on said condenser signal, that monitors electric power data and compressor speed data from said inverter drive, that calculates a derived condenser temperature based on said electric power data, said compressor speed data, and compressor map data for said compressor, and that compares said measured condenser temperature with said derived condenser temperature, and selectively updates said compressor map data based on said comparison.

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