Focusing type three gallium arsenide solar cells model in the condition of following sun & MPPT control

This paper studies focusing type three gallium arsenide solar cells model in the condition of following sun, the output characteristics and the influence factors of output power. The study results show that gallium arsenide battery array has good I-U output characteristics at high magnification under spotlights. In addition, the highlights intensity leads to solar cells with the narrow width, short-circuit current (I_SC) and output power increasing, but at the same time depletion layer compound rate change, open voltage (U_OC) reduces, and restricts the output power of array. At the same time the photovoltaic array temperature and resistance increases in series. Because the temperature of the array has a lot of negative effects to its output power, this paper used the compulsory cooling way to ensure that the output of the panels efficiency. Finally, using two kinds of reliable maximum power point tracking (MPPT) algorithm verifies the model´s reliability.