提出了一种基于扰动观察法的改进最大功率点跟踪(MPPT)算法,并与常见的MPPT算法(扰动观察法和电导增量法)进行对比分析.结合加拿某公司推出的RT-LAB实时仿真平台建立数字主电路,进行数模混合实时仿真验证,分析了改进MPPT算法与传统MPPT算法的控制效果.实验结果表明,改进的变步长扰动观察法振荡范围小于2种传统MPP算法,同时该算法在光照强度及电池温度改变时,跟踪至新的最大功率点所需时间也小于另外2种算法,验证了改进控制算法的有效性及优越性.%In this paper,an improved maximum power point tracking (MPPT) algorithm based on perturbation observation method is proposed and compared with the common MPPT algorithms-perturbation observation method and conductance increment method.Combined with CRT-LAB real-time simulation platform promoted by Canadian Opal-RT company,a digital main circuit is established,and digital analog realtime simulation verification is carried out,and the control effects of the improved MPPT algorithm and the traditional MPPT algorithm are analyzed and compared.The experimental results show that the oscillation range of the improved variable step perturbation and observation method is less than those of two kinds of traditional MPPT algorithms and the time the improved MPPT algorithm takes to track to the new maximum power is less than those of the other two when the light density and battery temperature are changed.The experiment verifies the effectiveness and superiority of the control algorithm.
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