Standard electrical characteristic simulation test bench for photoelectric system

摘要

The invention relates to a continuous simulation real-time photovoltaic system I = F（ The simulator is provided by the dual diode PV model and controlled by the PI regulator.On the digital platform based on FPGA, MLI pulse is generated to the power converter of resistance load. In Matlab / Simulink environment, the PV model with two diodes has better stability near the open circuit voltage.V lt sub gt Co lt/ The new design method used in this invention, namely XSG, represents the graphic block and control algorithm of two diode models, and ensures rapid prototyping and optimization of FPGA structure. Once realized, the electrical characteristics I = f ((V) and P = f ((V)) are fully simulated E.CE The test bench provides a good balance between accuracy, computational speed, cost, and the space allocated for testing compared to existing or commercial simulators. The invention allows users toIn both industrial and research fields, its test is applied to improve the power efficiency and quality of photovoltaic conversion system, and control strategies independent of intermittent weather conditions are formulated.