商业微纳卫星电源故障保护及恢复设计

Design of power failure protection and recovery for commercial micro/nano satellites

微纳卫星是目前极为热门的卫星应用发展方向。但大量低等级元器件提高了卫星单粒子闩锁的可能性,对微纳卫星电源管理提出了挑战。为提高微纳卫星电源管理及故障恢复能力,提出了一种低成本微纳卫星电源系统防护及自主恢复设计。该设计基于电流检测实现电源系统自动过流保护,同时,具备自主恢复供电能力,自主恢复时间可调。论文阐述了微纳卫星电源系统防护及自恢复原理,理论推导了设计参数选择依据,并利用实验实测验证了电源防护及自恢复设计的可行性。

Micro/nano satellites are currently the most popular development direction of satellite application.However,a large number of low-level components have increased the possibility of satellite single-particle latch-up,which has challenged the micro-nano satellite power management.In order to improve the capability of micronanosatellite power management and fault recovery,a low-cost micro-nano satellite power system protection and autonomous recovery design was proposed.The design was based on current detection to achieve automatic overcurrent protection of the power supply system.Moreover,it has the ability to restore the power supply autonomously,and the autonomous recovery time is adjustable.The thesis expounds the protection and selfrecovery principles of the micro-nano satellite power supply system,theoretically derives the basis for design parameter selection,and verifies the feasibility of the power protection and self-recovery design using experimental measurements.