method to increase the efficiency of hermetic compressors applied in refrigeration and air conditioners.

摘要

method for increasing the efficiency of hermetic compressors applied in refrigeration and air conditioners the present invention refers to a speed control system for hermetic compressors of the variable speed type, which uses a pmsm motor, containing an optimization or minimization strategy , of the electric current. once the minimum current has been defined to meet a given demand for torque, it is applied to the hermetic compressor motor, which will operate at the maximum efficiency point for each load point.