SIMULATION STUDY OF A THREE-PHASE GRID-CONNECTED PHOTOVOLTAIC SYSTEM USING SVPWM TECHNIQUE FOR THE INVERTER

Nguyen Thi Van Anh; Nguyen Huu Cuong; Dao Van Da; Do Thanh Hieu

Nguyen Thi Van Anh Hung Yen University of Technology and Education
Nguyen Huu Cuong Hung Yen University of Technology and Education
Dao Van Da Hung Yen University of Technology and Education
Do Thanh Hieu Hung Yen University of Technology and Education

Abstract

This paper presents the design and simulation of a two-stage grid-connected three-phase photovoltaic (PV) system using the MATLAB/Simulink platform. The research focuses on evaluating the performance of the Perturb and Observe (P&O) MPPT algorithm integrated with Space Vector Pulse Width Modulation (SVPWM). Simulation results under varying irradiance conditions demonstrate that the P&O algorithm provides a fast dynamic response while maintaining a stable DC-link voltage at 800 V. Furthermore, the proposed control scheme optimizes the quality of the grid-injected current, achieving a Total Harmonic Distortion (THD) range of 1.89% to 4.17%, which strictly complies with the IEEE Std. 519-2022 requirements. The study confirms that the synergy between P&O and SVPWM effectively enhances the efficiency and reliability of high-power PV systems.

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