Performance Analysis and Modeling of SRRCCIM under the Impact of Unbalance Supply Voltage

This paper develops a mathematical model for analyzing the steady state performance of the static rotor resistance chopper control induction motor (SRRCCIM) operates under unbalance supply voltage conditions. The IEC definition indices of voltage unbalance factor (VUF) and complex voltage unbalance factor (CVUF) which consists of magnitude and phase angle of the unbalance supply are used for the analysis. Also, this paper evaluates the impact of voltage unbalance and duty cycle of chopper circuit on the stator and rotor motor parameters, motor currents, efficiency, power factor, torque-speed characteristics, maximum torque starting and torque. The proposed mathematical model of SRRCCIM is validated using MATLAB-Simulink. The results have shown that the performance of the SRRCCIM and variation of positive sequence stator current, negative sequence stator current, current unbalance factor(CUF), efficiency, and developed torque are depending on the magnitude of the voltage unbalance and chopper circuit duty cycle.