Performance Analysis of Solar PV-Based Unified Power Quality Conditioner System for Power Quality Improvement Under Nonlinear Load Condition

In this paper, the power quality (PQ) profile like harmonics and voltage sag is improved in the power system by integrating a solar PV-based unified power quality conditioner (UPQC). The control technique of the UPQC is designed by using a basic a synchronous reference frame technique for reference current generation, hysteresis current controller technique for switching pulse generation and conventional proportional- and integral- (PI)based DC-link voltage controller. The foremost objective of the proposed research is to control the DC-link voltage of the UPQC which is achieved by integrating a solar PV-based renewable energy source across its DC-link capacitor. The analysis is carried using MATLAB simulated results. To verify the outcomes, the proposed UPQC results are also compared with conventional PI controller.