Bifacial photovoltaic modules are designed to generate electricity by absorbing both front and rear irradiance at the same time,which enhances the power generation compared to mono-facial photovoltaic modules.In this paper,a two-mode power control strategy is proposed based on bifacial photovoltaic modules.Firstly,the modified equivalent irradiation model is used to construct a parametric model of the electrical characteristics of bifacial photovoltaic modules;according to the power output characteristics of bifacial photovoltaic modules and then based on the judgement of irradiance,a two-mode control strategy with the maximum power output and the power reserve control is proposed;finally,the model is used to experiment and simulate the 365 W crystalline silicon bifacial photovoltaic module.The experimental results show that the relative error between the predicted power and the measured power is less than 3.5%,and the relative error of the voltage at the maximum power point under the measured condition is 0.3%.The two-mode power control strategy can achieve the real-time active power reserve without increasing the energy storage,in which the maximum active standby capacity at the transient equivalent irradiance of 1006 W/m2 is 69 W,and at the transient equivalent irradiance of 1031 W/m2 is 78 W.
关键词
双面组件/降功率/最大功率点/双模式功率控制
Key words
bifacial PV module/power reserve/maximum power point/two-mode power control
维普
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