Predictive Current Deadbeat Control for Permanent Magnet Synchronous Machine Based on Space Vector Moduation

Abstract

In this paper, a kind of predictive current deadbeat control for permanent magnet synchronous motor is proposed, which is deduced from the PI control stratege and conventional rotor field-oriented vector control. The expected reference voltage veclor is calculated from the current error and the rotating voltage and realized by space vector modulation. This new method realizes the dynamic decoupling effect of dq axis current and improves the transient performance by eliminating time delay caused by the current loop. The predictive current value is equal to the reference current value and in this way the expected voltage vector can be predicted one sample period ahead, which eliminates the time delay caused by calculation. The experimental results prove the validity of this method.