Abstract
The power sector increasingly prioritizing the improvement of power quality (PQ), due to increase automation in industries and integration of power-electronics-based distributed generation systems. This paper proposed a novel method of enhancing the PQ by using Unified Power Quality Conditioner (UPQC) and Distribution Static Compensator (DSTATCOM) with 12-switch Voltage Source Inverter (VSI) configuration with bidirectional DC-DC converter used for Electric Vehicle (EV) for charging station. A novel UPQC system topological design is introduced. Typically, a three phase three wire (3P-3W) UPQC consisting of two VSI connected back to back. However, in this configuration, six switches belonging to the series inverter are often underutilized. As a solution for this problem, for enhancing semiconductor utilization with reduced overall switch count, a new reduced-switch UPQC topology is proposed in this paper. The proposed design requires only nine switches and retains all performance benefits of conventional 12-switch UPQC without increasing switch voltampere (VA) rating. A comprehensive analytical comparison between the proposed topology and the existing 12 and 9-switch UPQC configurations is provided. Simulated results obtained using MATLAB/Simulink, along with real-time validation on an OPAL-RT platform, confirm that the proposed topology enhances PQ while achieving significant hardware optimization