Design Of Photovoltaic Simulator

PV module is the core component of photovoltaic power generation system,its performance and parameters directly determine the efficiency of the whole power system.In the design process of photovoltaic power generation system,it is necessary to calculate the parameters of the system and form the design and selection of other equipment.Under the laboratory conditions,the construction of large-scale photovoltaic array is not realistic.In order to better carry out the research and development of photovoltaic system in the laboratory,photovoltaic simulator is an indispensable auxiliary equipment.This paper first introduces the research direction and significance of PV simulator at home and abroad in recent years on the photovoltaic simulator and research,and deduces a collection point flat parabolic flat parabolic motion trajectory equation of photovoltaic mathematical model,compared with the commonly used index model of photovoltaic cells,horizontal projectile motion which contains no index operation,a small amount of calculation,more practical.In the photovoltaic simulator design of the main circuit,the topology of the ZVCS converter and BUCK ZVCS converter,rectifier as a photovoltaic simulator can run efficiently,BUCK circuit adopts double closed loop control strategy,eliminate the influence of control delay.In the photovoltaic simulator load point tracking control strategy on horizontal projectile motion model,deduced the load point of reference current and the load between the functional relation and piecewise iterative method ca n quickly and accurately find the work load,the dynamic performance of the simulator.In order to verify the photovoltaic simulator simulation platform of PSIM design,finally using DSP TMS320F28335 as the control core of the photovoltaic simulator experiment platform,and the experiment was carried out.The simulation and experimental results prove the correctness of the simulator main circuit topology and control strategy.