An engineering design model of multi-cell series-parallel solar array

In the design and construction of the photovoltaic system, a method is necessary which can concisely, quickly, accurately calculate the I-V curve of the whole photovoltaic array. This article propose a method that based on basic technology parameters provided by supplier, considering solar array element number, the total number of series and parallel branch and according to real-time light intensity and temperature correction, which can calculate the Current-Voltage(I-U) characteristics curve of the solar array in an engineering calculation. This method have passed the text of MATLAB simulation, and the result is correct. This method can also be used in the MPPT control of the solar system.