Mathematical Analysis of the Small Signal Model for Voltage-Source Inverter in SPMSM Drive Systems

摘要

This paper aims at proposing a complete mathematical analysis and derivation of the small signal model for voltage-source inverter (VSI) with a surface-mounted permanent magnet synchronous motor (SPMSM). The basic equations of the SPMSM model were developed and simulated using MATLAB/SIMULINK environment. In addition, the switch state functions were used to express the motor phase voltage and then develop mathematical model for voltage source inverter (VSI). In order to control the machine speed from standstill to rated speed with rated load, the vector control strategy was applied. To design the speed loop and current loop, anti-windup PI controllers were used. To verify the effectiveness of the presented analysis, some of obtained simulation results were discussed.