飞行状态对太阳能飞机中组件性能的影响

doi:10.7527/S1000-6893.2020.23851

Abstract

Abstract: The effects of flight state parameters such as speed, altitude, time, and regions of solar aircraft on the performance of photovoltaic modules are studied based on the power generation model of photovoltaic modules. Taking the monocrystalline silicon module and the Xihe solar aircraft as research objects, this paper concludes that with the increase of flight speed, the power generated by the module increases but tends to saturate, because the speed increase will effectively reduce the surface temperature of the modules. However, the performance improvement is limited, since the power required by the aircraft increases exponentially with the speed increase, and there is an energy balance between the power generated by the modules and that required by the aircraft. The power generated by the modules also increases with the tendency to saturate when the flight altitude rises because of temperature drop in the air and on the surface of the module; meanwhile, the higher the altitude, the smaller the atmospheric density and atmospheric permeability, the larger the solar radiation intensity, and thus the more power generated by the module. The saturation is due to the performance limitations of the components. During a day, the power generated by the components is approximately symmetrical around the axis of 12 o'clock solar time, and is strongest at noon. The battery performance is strongest in summer and weakest in winter, because the module performance is mainly determined by the intensity of solar radiation. As the latitude increases, the power produced by the components decreases, because the higher the latitude and thus the smaller the solar altitude angle, the less the solar radiation the photovoltaic module can receive. The lower the latitude, the higher and more stable the total power generated by the module is. This paper can provide reference for the energy distribution of solar aircraft and long-time space flight.

Key words: solar aircraft, photovoltaic modules, flight parameters, photovoltaic cell performance, performance prediction

CLC Number:

V242.9

JIN Xin, XIAO Wenbo, YE Guomin, XIA Qinggan, WU Huaming, ZHANG Wenlong, TU Jiliang, HE Yinshui. Effect of flight state parameters of solar aircraft on photovoltaic module performance[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2020, 41(10): 223851-223851.

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Effect of flight state parameters of solar aircraft on photovoltaic module performance

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