一种大功率SAR卫星电源系统设计

摘要

SAR satellites have the characteristics of high power pulse and quick response.The power supply topologies of the foreign SAR satellites are analyzed and summarized.A novel power supply topology with parallel busbar function for SAR satellite is proposed.The two busbars can be paralleled with the parallel operation unit applied between the platform busbar and the payload busbar to improve power supply reliability in the failure mode.The work mode of the parallel operation unit on orbit is introduced.The ground and on orbit test verifies the correctness of the scheme.The scheme proposed in this paper can provide reference for the other SAR satellite power supply system design.%SAR卫星电源系统具有大功率脉冲供电、响应速度快的特点.文章分析和总结了国外SAR卫星供电拓扑结构,提出了一种具有并网供电功能的双母线SAR卫星供电拓扑结构.通过在平台母线和SAR载荷母线之间的并网控制器,实现故障时SAR载荷母线对平台负载并网供电,提高了供电可靠性.文章还给出了并网控制器在轨使用策略,地面和在轨测试验证了电源系统设计的正确性,可为我国后续大功率SAR卫星电源系统设计提供参考.