基于光伏–储能集成功率模块的航天器分布式供电系统能量管理策略  

Power Management Strategy of a PV-battery-integrated Power Module-based Distributed Power System for Spacecrafts

作　　者：沈冲 吴红飞[1] 高尚[1] 董晓锋[1] SHEN Chong;WU Hongfei;GAO Shang;DONG Xiaofeng(Center for More-Electric-Aircraft Power System(Nanjing University of Aeronautics and Astronautics),Nanjing 211106,Jiangsu Province,China)

机构地区：[1]多电飞机电气系统工信部重点实验室(南京航空航天大学),江苏省南京市211106

出　　处：《中国电机工程学报》2020年第20期6674-6681,共8页Proceedings of the CSEE

基　　金：中央高校基本科研业务费项目(NE2018102);江苏省青蓝工程。

摘　　要：提出基于光伏–储能集成功率模块的航天器分布式供电系统及其能量管理策略。采用三端口变换器为基本模块连接航天器光伏发电单元和蓄电池储能单元,并构建空间分布式供电系统,实现了航天器分布式光伏和储能单元的高效集成化功率变换与能量管理;利用光伏剩余发电容量和蓄电池荷电状态动态调整各分布式集成三端口功率模块输出下垂系数,实现了各分布式光伏发电模块输出功率最大化,以及各分布式储能电池荷电状态均衡化。详细分析了提出的航天器分布式供电系统及其能量管理策略的基本原理,并通过实验验证了理论分析的正确性和可行性。A distributed power system based on photovoltaic(PV)-battery-integrated power modules and its energy management strategy were proposed for spacecraft applications. A three-port converter was employed as the basic power module to interface the PV module and storage battery in a spacecraft, and multiple three-port power modules were combined to build a distributed power system in space. Efficient power conversion and management of distributed PV and battery cells in spacecrafts were achieved with three-port converters. An adaptive droop control method with droop coefficient determined by the available output power of PV and the state of charge(SoC) of battery was presented. Maximum output power of each PV module and SoC balance of batteries in the distributed power system were achieved. Operation principles of the proposed distributed power system and its energy management strategy were analyzed in detail. Experimental results were presented to validate the effectiveness of the proposed solutions.

关 键 词：航天器供电系统 分布式供电 能量管理 三端口变换器 下垂控制 

分 类 号：TM46[电气工程—电器]