2019 22nd International Conference on Electrical Machines and Systems (ICEMS) | 2019
Angle Compensation-Based Voltage Redistribution for Induction Motor Drives in the Field-Weakening Windup Region
Abstract
Due to the limited inverter output voltage, the current regulator of induction motor (IM) drives is prone to saturating during the transient process of field-weakening region. This windup problem seriously deteriorates the dynamic performance of IM field-weakening control. To address this problem, this paper proposes an angle compensation-based voltage redistribution method. The proposed method can rotate the voltage command output from the current regulator to increase the d-axis voltage margin. Compared with the conventional field-weakening control, the proposed method can effectively avoid the fluctuant current and achieve smoother performance in the field-weakening windup region. The experimental results from a 3.7kW IM drive system verify the effectiveness of the proposed algorithm.