Discrete-Time Current Regulator for AC Machine Drives

In a practical alternating current (ac) machine drive system, zero-order hold equivalent discrete-time model motivates the development of direct regulator structure. However, it is complicated to establish for asymmetric 1 1 Asymmetric denotes ac salient in this article, whereas symmetric non-salient machine. due involvement complex matrix exponential related unequal inductance parameters. order overcome barrier, novel based on flux proposed, where modified considering delay compensation developed and new feed-forward voltage designed eliminate exponential. addition, observer proposed can work suppress adverse one-step effect regulator. The theoretical analysis has shown that have good parameter robustness stability. Also, experimental verification performed an test rig.