研究目的
To model and simulate a solar photovoltaic plant using MATLAB Simulink, study its I-V and P-V characteristics under varying ambient conditions, and evaluate its performance using real data for Upington, South Africa.
研究成果
The study successfully modeled and simulated a photovoltaic system, revealing its dependency on ambient temperature and solar irradiance. The SPWM inverter was designed and simulated, converting DC to AC as expected. Future studies will focus on evaluating the plant's reliability using different methods, such as neural network and fuzzy logic.
研究不足
The study assumes all modules are identical, which may not be the case in practice due to manufacturing variations and different operating conditions in different parts of the plant. The real data used was limited to solar irradiance, with temperature kept constant for the study.
1：Experimental Design and Method Selection:
The study involved developing a solar photovoltaic plant model using MATLAB Simulink, simulating a single PV module, a string of series-connected modules, and an array of parallel-connected strings under standard testing conditions (STC).
2：Sample Selection and Data Sources:
The PV module used was a monocrystalline silicon type, with data extracted from the datasheet. Real data for Upington, South Africa, was used for simulations.
3：List of Experimental Equipment and Materials:
MATLAB Simulink was used for simulation. The PV module specifications included open circuit voltage, short circuit current, maximum power point voltage, and current.
4：Experimental Procedures and Operational Workflow:
The plant was simulated under varying temperature and irradiance levels to study its I-V and P-V characteristics. A DC-AC inverter model using Sinusoidal Pulse Width Modulation (SPWM) was also simulated.
5：Data Analysis Methods:
The performance of the plant was analyzed under different environmental conditions, and the results were compared to evaluate the plant's reliability.
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