| Bifacial photovoltaic modules are favored by the photovoltaic industry because of their advantages such as high photoelectric conversion rate,strong environmental adaptability,and decreasing production cost year by year.With the booming development of the new-energy electric vehicle industry,in many application scenarios,distributed photovoltaic modules are needed to achieve safe and efficient charging of electric vehicles through contactless power transmission system.This thesis focuses on the above requirements,and the specific work contents are as follows:First of all,MATLAB/Simulink was used to build a bifacial photovoltaic module model,and the seven parameters affecting the bifacial photovoltaic receiving irradiance were simulated and analyzed,and the influence of each parameter on the positive and negative receiving irradiance of the module was studied.The simulation verifies the output characteristics of bifacial photovoltaic system under different light intensity and temperature environment.Secondly,the mathematical model of photovoltaic contactless power transmission system is built,and three-dimensional modeling of magnetic field with and without shielding of resonant coil is carried out with Ansys,and the loss of shielding magnetic field is simulated and analyzed.By combining the bifacial photovoltaic power generation system with the contactless power transmission system,the experimental test of energy storage battery charging is carried out,and the effectiveness of the system is verified.Thirdly,an energy storage system combined with photovoltaic contactless power transmission system and its control strategy are studied.The working process of the system is divided into seven modes,which can maximize the use of photovoltaic module output power when the light fluctuates and ensure the continuous power supply of the load.The feasibility of this strategy is proved by simulating five presets of actual working conditions.Finally,the selection of circuit components is completed,and the contactless power transmission experimental platform of bifacial photovoltaic power generation system is built.The working state of each module under different working conditions is tested experimentally,and the effectiveness of the experimental platform is verified.There are 86 figures,14 tables and 89 references in this thesis. |
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