适用于商业航天的全局MPPT优化算法  

A Global MPPT Optimization Algorithm for Commercial Aerospace

作　　者：徐仪圆 许祺峰[1] XU Yiyuan;XU Qifeng(Shanghai Institute of Space Power-Sources,Shanghai 200245,China)

机构地区：[1]上海空间电源研究所,上海200245

出　　处：《西北工业大学学报》2020年第S01期133-139,共7页Journal of Northwestern Polytechnical University

摘　　要：在不均匀的光照和温度条件下,商业航天中微小卫星并联使用的太阳能帆板与体装光伏面板会因为串联旁路二极管,P-V输出特性呈现多峰的特点,导致常规算法无法跟踪到全局的最大功率点。在不增加任何附加硬件电路的条件下,通过局域搜索取代全局搜索,充分运用并联光伏阵列峰值点与光伏单元的开路电压、短路电流间的比例关系,提出一种基于电压闭环的快速稳定的全局MPPT优化算法。将其运用到不调节母线的电源模块,可实现对并联光伏阵列全局最大功率点的跟踪。以百瓦级的Superbuck变换器为主搭建实验平台,验证了快速稳定MPPT优化算法的有效性。Under the condition of uneven illumination and temperature,when the solar wings and body-mounted solar panels are combined into one branch in parallel used in the Commercial micro-satellite,the multi-peak phenomenon of the output power of the branch would appear because of the bypass diodes.As a result,it is difficult for the conventional maximum power point tracking(MPPT)algorithm to track the global maximum power point(GMPP).A fast and stable voltage closed loop MPPT optimization algorithm is proposed without adding any additional hardware circuit.According to the proportion between the peak point value of parallel solar array and the open circuit voltage and short circuit current of solar unit,local searching is used instead of global searching.When it is applied to the power module of unregulated bus,it can successfully realize the global maximum power point tracking of parallel solar array.An experimental platform is built based on a hundred-watt superbuck converter to verify the effectiveness of the fast and stable MPPT optimization algorithm.

关 键 词：电源模块 并联光伏阵列 电压闭环控制 多峰值 全局最大功率点跟踪 

分 类 号：F407.5[经济管理—产业经济] F416.5