Electrical parameters identification of hermetic Refrigeration compressors with Single-Phase Induction Machines using RLS algorithm

This paper presents a methodology for parameter identification of a Single-Phase Induction Machine (SPIM) of an air conditioning compressor. From the machine model two classical Recursive Least Square (RLS) algorithms are applied at qd axes based on current measurements with standstill rotor. The identification is achieved with standstill rotor due the fact that this methodology allow to be implemented in hermetic refrigeration compressor driven by SPIM. Then, the identified parameters can improve the performance of the Field Oriented Control (FOC) and sensorless techniques used in these systems. Furthermore, the correct parameters of Single-Phase Induction Machine allow a better representation of dynamic simulation behavior of compressor driven by SPIM. Experimental results are presented to provide the effectiveness of the method.