Transient and Steady-State Performance Improvement of IM Drives Based on Dual-Torque Model

Transient response performance and steady-state operation are the two most important indicators of a motor drive system. In order to solve these problems, this study proposes new induction (IM) model, then designs simplified linearization controller method. First, tangential force that determines transient process is represented by electromagnetic torque, radial reactive torque. Then, dual-torque model IM derived, which not only accurately shows rotating air-gap magnetic field through amplitude angular frequency, but also visually demonstrates physical essence IM. feedback method without analysis zero dynamic. addition, time-scale hierarchical control system designed reduce ripple caused coupling different variables. The experimental results show torque proposed 65% lower than RFOC, speed 10% higher DTC.