Today power quality issues related to electric power distribution companies are one of major concerns. In this paper, compensation voltage sag/swell by Dynamic Voltage Restorer (DVR) based on Modular Multilevel Cascade Converter - Double Star Chopper Cell (MMCC-DSCC) has been studied and simulated. The proposed half-bridge inverter six cells in each phase is composed The output voltage of the inverter line to level was thirteen, so very low harmonic content of using a very small LC filter output sinusoidal voltage quality can be found. To extract the switching pattern of the phase shift multi-carrier modulation (PSHM) is used. Performance DVR at Voltage sag/swell multilevel inverter (MMCC-DSCC) structure-based DVR and DVR based two-level inverters have been compared. The results of simulation software MATLAB / SIMULINK shows a properly functioning system
کلید واژگان :
Dynamic Voltage Restorer (DVR), Modular Multilevel Cascade Converter - Double Star chopper Cell, Phase Shift Modulation (PSHM).
