A Stator Flux Calculation Method for Permanent Magnet Synchronous Motor in 60° Coordinate System

The direct torque control of permanent magnet synchronous motor is with a greater concern. The space vector modulation mode algorithm can greatly improve the torque ripple of traditional direct torque control. The 60° coordinate system used in the space vector pulse width modulation algorithm can make it simpler. The accurate observation of stator flux is the premise of direct torque control. A simple and effective method is to adopt the voltage model based on low-pass filter. In order to ensure the consistency of the algorithm, the form of calculating the stator flux based on low pass filter is deduced in 60° coordinate system. (paper)