Regenerating-Mode Stabilization of Indirect-Field-Orientation-Controlled Induction Motor for Inertial Load Drive

In inertial load drive applications that require the acceleration and deceleration operation, the stable current control is required even in the regenerating operation. In this study, the instability of the indirect-field-orientation-controlled induction motor is analyzed by focusing on the phase characteristics of the current controller and induction motor, and the improved current controller is proposed. The proposed method is verified via simulation and a small-scale experiment with a 750 W induction motor with an inertial load.