Standstill and low speed sensorless control of SMPMSM by using digital FIR filter in the HF signal injection method

Summary from only given. In this paper a sensorless speed vector control method at standstill and low speed in the Surface Mount Permanent Magnet Synchronous Motor (SMPMSM) drive system is described. A high-frequency model of an SMPMSM in the rotor reference frame is developed based on a sensorless rotor speed estimation algorithm. Furthermore, a digital filter is used to reduce the delay effect of conventional analog filters. The coefficients of the digital filter are optimized by using Genetic Algorithm (GA). Also the speed and current PI controllers which are used in the vector control scheme are adjusted based on GA. Simulation results for a 370 V 2.8 Kw, 1500rpm SMPMSM confirm the good performances of the proposed method in standstill and low speed cases.