Comparison of conventional and vector controlled methods applied for single-phase induction motors in presence of iron loss

This paper is aimed to determine a general model for simulating single-phase induction machines operation and investigates the vector control of them. This proposed vector control method is based upon rotor-flux orientation concepts. Iron loss traditionally ignored in vector control schemes. If we neglect the iron loss, then it detunes the overall vector controller and results in an error in the torque control. The iron loss is modeled, in general, by a parallel resistor R_M to the magnetizing inductor L_M. In this paper a series R-L model that accounts for the effects of the iron loss in presence of magnetizing inductance, in the single-phase induction motor is proposed and a rotor-flux oriented control scheme of this proposed model is investigated. In this paper first the iron loss in a mathematical model of induction machines has been modeled and then applies the control methods. For this reason, the conventional method of operation (with run capacitor) and a vector controlled method for SPIM; both with equivalent element (series resistance R_M) to presence of iron loss have been used. Simulation results are provided to illustrate the system operation.