LEO卫星电源系统拓扑研究

摘要

Based on 30 low earth orbit (LEO) satellite missions and applications of electrical pow- er system, the comparison of five electrical power system topologies at system level is presented including configuration, principle, efficiency and devices. The maximum power point tracking (MPPT) buck-boost regulator (B2R)is selected as a flexible one because of its good compromise between regulating performances and composition cost. MPPT B2R fulfils LEO satellite require- ments and is one of widely applied electrical power systems, and the required reliability and modulari ty can been achieved by arranging power regulation module in hot redundancy. This topology provides a high level of flexibility and satisfies various Chinese LEO satellite mission needs.%基于30个近地轨道（LEO）卫星任务及其电源系统应用情况，在系统层面上对5种电源系统拓扑进行了分析比较，包括配置方式、控制原理、效率及器件等。针对功率调节性能和器件组成规模，选择配有最大功率点跟踪（MPPT）的升一降压调节器（B2R）作为多适用的电源系统拓扑。此系统适应LEO卫星需求，属于拓扑用途广泛的电源系统，可通过合理配置热备份的功率调节模块来实现功率组合及可靠性设计，具有较高的兼容性，能够满足中国LEO卫星任务需求。