Control method and control device suitable for full-frequency-conversion compressor parallel unit
A frequency conversion compressor and control method technology, applied in the direction of refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems that the refrigeration system cannot resume work in time, the feedback link of the compressor is not detected, and the service life of parallel units is reduced. Facilitate design improvement, solve life mismatch, and prolong life
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[0054] The present invention will be described in detail below in conjunction with specific embodiments.
[0055] figure 1 Shown is the structural principle diagram of the control device applicable to the parallel unit of full variable frequency compressors of the present invention, including control line 6, feedback line 7, input device 5, suction pressure sensor 3, controller 4, and power consumption memory. The main circuit of each compressor 2 is respectively installed with a corresponding frequency converter 1, the operating frequency of each compressor 2 is driven by the frequency converter 1, and the output power of each frequency converter 1 is respectively fed back to the input terminal of the controller 4 . The signal output terminal of the input device 5 is connected to the data input terminal of the controller 4 . The output end of the suction pressure sensor 3 is connected to the pressure data input end of the controller 4; the output power output end of the fre...
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