FIELD: compressors with brushless DC electric motors for refrigerators and freezers. SUBSTANCE: electronic control unit of DC electric motors is provided with counter-emf control device. Compressor is additional provided with sensors showing temperature of volume being cooled, surrounding medium and condenser. Depending on information obtained from sensors, rotational speed of brushless electric motor is controlled. To exclude dependence of motor operation on load exerted on compressor piston, current dynamic, imitation system is introduced. EFFECT: increased productivity due to reduced losses of refrigerating device; elimination of resonance noise; enhanced reliability. 4 cl, 5 dwg
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