研究目的
To design and implement a high-performance photovoltaic emulator that accurately reproduces the electrical behavior of photovoltaic panels under variable environmental conditions and load changes, including the effect of the incidence solar angle.
研究成果
The developed photovoltaic emulator accurately reproduces the electrical behavior of the reference photovoltaic panel under variable environmental conditions and load changes, including the effect of the incidence solar angle. The emulator's performance is validated through real-time comparison with the panel, demonstrating its potential for indoor testing and analysis of photovoltaic systems.
研究不足
The study focuses on fixed photovoltaic panels and does not explore the emulation of tracking systems. The experimental validation is limited to specific environmental conditions and load changes.
1：Experimental Design and Method Selection:
The study employs a direct calculation method for the photovoltaic model to avoid the memory demands of look-up tables. The model is implemented using a MATLAB C MEX S-function and a dSPACE 1104 controller board.
2：Sample Selection and Data Sources:
The SR-20 photovoltaic panel is used as the reference panel, with its specifications provided in the manufacturer's datasheet.
3：List of Experimental Equipment and Materials:
The setup includes a dSPACE board 1104, a controlled DC/DC converter, LEM LA55-P and LEM LV20-P sensors for current and voltage measurement, and a conditioning circuit.
4：Experimental Procedures and Operational Workflow:
The emulator's performance is validated by comparing its output with the reference panel under variable load, temperature, and irradiation levels, including the effect of the incidence solar angle.
5：Data Analysis Methods:
The validation involves real-time comparison of the emulator and panel outputs, with results analyzed for accuracy and performance.
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