基于PMOS型固态功率电子开关的宇航智能配电系统研究

doi:10.16180/j.cnki.issn1007-7820.2020.09.009

摘要/Abstract

摘要：

针对当前使用NMOS固态功率电子开关的载人航天器智能配电系统存在NOMS隔离驱动控制电路占用大量硬件资源,且不能满足能源系统自主健康管理遥测信息采集需求的问题,文中提出了一种基于PMOS固态功率电子开关构建的智能配电系统设计方案。相对于NMOS,PMOS用于正线开关的非隔离驱动特性避免了配置隔离控制电路带来的系统资源代价问题,在简化硬件电路设计的同时获得了更多的遥测信息,解决了有限硬件资源与更多遥测参数需求的矛盾。针对SSPC负载短路保护特性带来的固态配电系统母线电压跳变问题,文中给出了提高固态配电器可靠性的辅助电路方案,可使负载短路保护故障不影响母线稳定。

关键词: 载人航天器, 智能配电系统, 直流配电, 固态功率电子开关, PMOS, 自主健康管理

Abstract:

The NMOS driving and controlling circuit cost lots of hardware resources in the solid-state smart power distribution system based on the NMOS SSPC of manned spacecraft, and is unable to meet the requirements of telemetry information for self-health management of spacecraft energy system. To solve this problem, a new solid-state smart power distribution system which is based on PMOS SSPC is proposed. Compared with the NMOS, the PMOS which is used as a positive switch, has non-isolated driving characteristic and costs less system resource. In addition, PMOS can simplify the hardware circuit design and get more telemetry information at the same time, and solve the contradiction between limited hardware resources and more telemetry parameters requirement. Aiming at bus voltage instability of solid-state distribution system caused by SSPC load short circuit protection, an auxiliary circuit scheme for improving the reliability of solid-state power distribution is proposed in this paper, which prevents the stability of the busbar from the effect caused by load short-circuit protection fault.

Key words: manned spacecraft, smart distribution system, DC distribution system, SSPC, PMOS, self-health management.

中图分类号:

TN710

仪德英,陈恒智,于磊,王林涛,武逸然. 基于PMOS型固态功率电子开关的宇航智能配电系统研究[J]. 电子科技, 2020, 33(9): 50-55.

YI Deying,CHEN Hengzhi,YU Lei,WANG Lintao,WU Yiran. The Research of Smart Space Power Distribution System Base on PMOS Power Switch[J]. Electronic Science and Technology, 2020, 33(9): 50-55.

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