研究目的
To propose a power optimized based converter and its control for low voltage solar photovoltaic (PV) modules for grid-tied solar PV systems.
研究成果
The proposed power optimized architecture based single phase grid tied SPVSSA effectively harvests maximum power from solar PV modules using FLC for MPHC and SOGI based hysteresis control for grid synchronization. The system demonstrates fast dynamic response under abrupt changes in solar insolation and maintains sinusoidal grid current with low THD under varying load conditions.
研究不足
The study focuses on a single-phase grid-tied solar photovoltaic system and may not cover all aspects of three-phase systems or other configurations. The experimental setup is simulated in MATLAB, and real-world conditions may vary.
1：Experimental Design and Method Selection:
The study employs a non-isolated high gain DC-DC converter for each PV module to boost PV voltage and harvest maximum solar energy. Fuzzy logic control (FLC) is used for maximum power harvesting under various conditions. A voltage source inverter (VSI) is controlled to stabilize dc-link voltage and synchronize with the grid supply.
2：Sample Selection and Data Sources:
The system is designed for a 510W solar panel, with each converter rated at 255W. Performance is analyzed under shading in solar insolation and perturbation in loads.
3：5W. Performance is analyzed under shading in solar insolation and perturbation in loads.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Includes solar PV modules, high gain DC-DC converters, single H-Bridge VSC, series interfacing inductor (Lf) filter, shunt high frequency (Cf) ripple filter, single phase grid, linear and non-linear loads.
4：Experimental Procedures and Operational Workflow:
The proposed model is developed using MATLAB 2015a, and results are obtained under various operating conditions including abrupt changes in solar insolation and load conditions.
5：Data Analysis Methods:
Performance is recorded in terms of solar insolation, PV voltages, PV power, DC bus voltage, DC bus power, grid injected current, load current, PCC voltage, grid injected power, and load demanded power.
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