Four-stage Deadbeat Control with Dead-time Compensation Based on PMSM

Abstract:
With the advancement of science and technology, the control strategies of permanent magnet synchronous motors are becoming more and more diverse. For surface-mounted permanent magnet synchronous motor (PMSM), based on the four-stage deadbeat control strategy, deadtime compensation is introduced. First, the fast vector selection method is used to determine the first optimal vector and the sector where it is located, and then the second optimal vector is selected by the method of current prediction, and the action time of the two optimal vectors and the zero vector is calculated at the same time, effectively reduce computational difficulty and system complexity. The action time of each zero vector is consistent. Secondly, in order to reduce the switching frequency, the zero vector is allocated to the beginning and the end of the control period, and the optimal vector is sorted according to the zero vector. On this basis, dead-time compensation is performed, and finally failed to verify the effectiveness and advancement of the method through simulation.