INITIAL POLE POSITION ESTIMATION METHOD OF PMSM(PERMERNAT MAGNET SYNCHRONOUS MOTOR)

摘要

The present invention relates to a method estimates an initial angle to increase the estimation accuracy sikimyeo short shorten the estimation time initial ??? Reduce the rotor movement to each estimated period and the addition the initial magnetic pole of the permanent magnet type synchronous motor to reduce the motor noise during initial Estimation relates to, the amount of half a sine wave test current applied to the D-axis, and additionally movement of the rotor (slider) for applying a half sine wave of sound to minimize the travel distance, and a constant current proportional to the torque and the magnetic pole position to use the displacement of the movement instead of the torque value using the relationship with the cosine value by finding the point where the generation torque of the motor is minimized for estimating a magnetic pole position, and the test current to the Q axis with respect to the estimated initial angle the application will be characterized by determining the sign of the magnetic pole position.