一种基于变换器拓扑的新型MPPT控制算法的研究

摘要

提出一种基于变换器拓扑(Boost/Buck)的最大功率点跟踪控制方法,该方法既能准确、稳定地跟踪到最大功率点,又只需对光伏输出电压这一个模拟量进行采样.同时,对所提出的该种方法进行了仿真建模分析,并比较了这几种MPPT算法下的跟踪效果.结果表明该方法具有更好的快速性、稳定性和经济性.%This paper proposes a MPPT control method based on a converter topology(Boost/Buck),which can not only track the maximum power point more accurately and steadily,but also only needs to sample the analog quantity of the photovoltaic output voltage.Meanwhile,simulations,modeling and analysis are conducted for the method,then tracking effects of several kinds of MPPT algorithm are compared.The results verify the improved rapidity,stability and effectiveness of the proposed MPPT method.