Enumerated-MPC-based dynamic voltage restorer using lc filter with damping resistor

Abstract

This paper presents an enumerated model predictive control (MPC) based method for the dynamic voltage restorer (DVR), which consists of a series-connected transformer and a voltage source inverter. The filter adopted in the DVR is a LC filter with a damping resistor. The design of the discrete model for the voltage source inverter and the corresponding controller are discussed in this paper. The proposed method is capable to regulate the DVR to compensate the sag, swell and harmonic distortions of the grid voltage. Simulation studies are conducted to verify the performance of the proposed enumerated MPC-based method, and the simulation results demonstrate that the proposed method is effective to achieve the protection of the loads from the grid voltage sag, swell and harmonic distortion.