改进的电导增量法在光伏系统MPPT中的应用

摘要

According to analyze the output characteristics of photovoltaic (PV) array and the advantages and disadvantages of the traditional maximum power point tracking (MPPT) method, an improved increment conductance (INC) method was proposed. Using Matlab/Simulink modeling and simulating the Boost DC/DC convert system,apply the improved method and the traditional INC to control the system respectively. The simulation results show that the improved method in the premise of ensuring stability of the system, make the PV array tracking the maximum power point more quickly and exactly under the change of circumstance.%分析了太阳能光伏阵列的输出特性和传统最大功率跟踪方法的优缺点,并在此基础上提出了一种改进的电导增量法.用Matlab/Simulink 对Boost DC/DC变换器系统进行了建模与仿真,将改进的方法和传统的电导增量法分别应用于控制该系统.仿真结果表明.在外界环境变化的情况下,改进的方法在保证系统稳定性的前提下,使得光伏阵列能更快速、准确地跟踪最大功率点.