Position sensorless control for interior permanent magnet synchronous motor using adaptive flux observer

This paper describes position sensorless vector control method for interior permanent magnet synchronous motor. We examined the vector control system that used the adaptive flux observer on rotational coordinate. First, we derived the expression for adaptive flux observer on rotational coordinate, and defined design method of observer gain and speed estimate gain. Second, we simplified equation of observer by the obtained gains and d-axis estimation rotor flux. Third, we constructed this method from a simulation using Matlab/simulink and a real machine. Finally, we reported because we obtained the wonderful result from simulation and experiment.