微纳卫星用可扩展MPPT功率调节器稳定性分析  

Stability Analysis of Extensible MPPT Power Regulator for Micro-nano Satellite Applications

作　　者：张玺 黄军[2] 常佳杰 陈海涛[2] ZHANG Xi;HUANG Jun;CHANG Jia-jie;CHEN Hai-tao(Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China;不详)

机构地区：[1]南京航空航天大学,江苏南京211106 [2]上海空间电源研究所,上海201100

出　　处：《电力电子技术》2020年第3期24-26,39,共4页Power Electronics

摘　　要：针对微纳卫星多电压体系的功率变换需求,提出了一种输出串并联型的最大功率点跟踪(MPPT)功率调节器,相较于传统的集中式MPPT功率调节器,该调节器具有拓展灵活、模块化程度高的优点。首先介绍了基本功率调节单元(PRU)的电路结构,分析了其工作原理,并给出了输出串并联拓展的示意图;然后分别使用李雅普诺夫判据和Middlebrook阻抗比判据分析了功率调节器输入侧和中间直流母线的稳定性,给出了稳定条件;最后以四路输出串联为例,仿真和实验验证了稳定性分析的有效性。In order to meet the demand of multi-voltage power transformation for micro-nano satellite system,a maximum power point tracking(MPPT) power regulator with output in series or parallel connection is proposed.Compared with the traditional centralized MPPT power regulator,it has the advantages of flexibility and high modularity.Firstly,the circuit structure of the basic power regulating unit(PRU) is introduced,and its working principle is analyzed.Then the stability of the input side and the middle DC bus of the power regulator is analyzed using Lyapunov criterion and Middlebrook impedance ratio criterion respectively,and the stability conditions are given.Finally,the accuracy of power regulator stability analysis is verified in simulation and experiment by connecting four units in series.

关 键 词：功率调节器 串并联拓展 稳定性 

分 类 号：TP214[自动化与计算机技术—检测技术与自动化装置]