Enhanced power quality and efficient photovoltaic integration with a PV-based unified power quality conditioner using optimized MPPT technique

Abstract

In recent times, mounting concerns about environmental sustainability and a rising need for superior electrical power quality have propelled substantial progress in renewable energy and power quality enhancement technologies. As a consequence, the proposed work involves the fusion of Photovoltaic (PV) systems with Unified Power Quality Conditioners (UPQC). This pioneering approach not only facilitates the generation of eco-friendly and sustainable energy but also effectively tackles the critical challenge of enhancing Power Quality (PQ) within contemporary electrical grids. By incorporating PV-generated power, UPQC shunt compensator effectively mitigates load-side PQ issues. Simultaneously, series compensator ensures perfect in-phase alignment between load and source voltages. To integrate PV system with UPQC, a Modified Z-Source Single-Ended Primary-Inductance Converter (SEPIC) with hybrid Bald Eagle Search-Optimized Adaptive Neuro-Fuzzy Inference System (BESO-ANFIS) Maximum Power Point Tracking (MPPT) technique is employed, enabling optimal performance under both Partial Shading Condition (PSC) and uniform insolation conditions. For effective control of UPQC, a \(dq\) theory-based approach is adopted, complemented by an Adaptive Proportional-Integral (PI) controller. This control mechanism ensures seamless operation of the PV-based UPQC. The performance and dynamics of proposed system are extensively assessed through simulations in MATLAB. The developed hybrid MPPT technique and integrated PV-based UPQC hold significant promise for enhancing power quality while harnessing renewable energy sources efficiently.