A New Time Sequence for Predictive Current Control in PMSM Drives

Conventional deadbeat predictive current control is a powerful control strategy for electric drive because of the advantages of fast dynamic response and easy implementation. In this paper, an improved deadbeat control algorithm for PMSM is employed based on timing optimization. The current controller calculates the current instruction piecewise, then generates the compensation value of the voltage command, thus eliminating the one-beat delay of the current instruction. Simulation and experimental results both show that the improved current prediction algorithm can effectively improve the dynamic performance of the current loop, and the steady-state behavior will not be influenced.