Abstract

Finite control set model predictive control (MPC) is one of the popular techniques for the control of power electronic converters. In this paper we explore the effect of sampling frequency in FCS-MPC of non-minimum phase converters. Usually a higher sampling frequency is linked to an improved performance. However, due to finite duration of prediction horizon in MPC and its dependence on sampling frequency we have observed that reducing the sampling frequency could improve the performance in terms of transients, efficiency and computational complexity. Based on these observations a variable frequency control scheme has also been proposed.

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