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Modeling and realization of photovoltaic simulator based on a buck DC-DC converter

This paper presents a simple accurate model for photovoltaic (PV) modules
 suitable for implementation by digital signal processors (DSPs). A buck
 DC-DC converter is employed to realize the PV characteristic appropriately.
 Three controllers set forth for current control according to PV voltage to
 achieve fast and accurate convergence. Computer simulation results are
 presented to investigate the effectiveness of the proposed PV system.
 Moreover, a practical setup is made and the proposed method using the
 obtained model for different temperatures and solar irradiations is tested
 in MATLAB/Simulink environment.