Research on torque ramp current limit starting of induction motor based on dsPIC30F6014

摘要

Based on the analysis and research on the mathematical model of the T-type equivalent circuit of the asynchronous induction motor, the control idea of the torque ripple current limiting start of the asynchronous motor is put forward, and the adaptive fuzzy PID is applied to the current limiting control part. In the basis of this theory, the simulation platform is built by using MATLAB/Simulink tool, and the soft starter of motor torque current limit control is carried out. The results show that the proposed method can reduce the motor starting current and improve the starting torque, which verifies the reliability of the torque ramp current limiting theory.