Comparative performance evaluation of two-phase PWM inverter FED induction motor drives with various topologies

Abstract

In order to compare the performance and to achieve a wide range of variable speed control of two-phase induction motor, various types of SPWM inverter topologies focused on high system efficiency and low torque pulsation are designed and implemented. By those topologies, two-phase unsymmetrical induction motor has been tested under the same conditions. The voltages supplied for main and auxiliary windings are independent with displaced 90 electrical degrees phase shift. The energised voltage of main winding is varied by V/F control scheme while that of auxiliary winding is kept at maximum level as nominal voltage. All experimental results are compared to validate the drive capability and motor performance.