A Novel Topology for Dynamic Voltage Restorer (DVR) with Multilevel Converters Based on Model Predictive Control (MPC)

چکیده مقاله

Voltage sags have always been a huge treat for sensitive industrial and commercial electrical equipment. This paper presents a novel topology for dynamic voltage restorer (DVR) with multilevel converters based on model predictive control (MPC) Strategy in order to compensate voltage sags and protect sensitive loads. The model predictive control is a simple and very flexible control scheme. The proposed DVR is based on 13-level diode clamped converter with H-bridge topology at its end side which injects a compensation voltage vector in series with the line voltage without the need for series transformer. Also, an autotransformer based 30 pulse ac-dc converter has been provided at input side of the DVR with the aim of harmonic elimination of input current. In addition to, the applied autotransformer provides isolation between the inverters and basic system. The proposed DVR is simulated using MATLAB/SIMULINK and finally, the simulation results are presented to demonstrate the accuracy and validity of the proposed method.

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