Photovoltaic module model parameter identification method and system

Abstract

Disclosed is a photovoltaic module model parameter identification method, including the following steps: 1) measuring and recording an I-V curve of a photovoltaic module in a standard test environment; 2) deriving an explicit expression of voltages and currents on the basis of an equivalent circuit of a single-diode model; 3) converting a parameter identification problem into an optimization problem, determining a parameter search space of an objective function in the optimization problem, solving the optimization problem and obtaining five parameter values of the model by means of parameter conversion; and 4) using the explicit expression in step 2) to simulate the I-V curve, and calculating a simulation error. The present disclosure improves a parameter identification method for a single-diode model, which requires only one calculation, thereby reducing the calculation load and improving the accuracy and stability of identification.

Dependencies are inferred from the claim text.