磁隔离技术在航天器二次电源系统中的应用  

Application of magnetic isolation technology in secondary power system of spacecraft

作　　者：陈昶文 王少宁[1] CHEN Changwen;WANG Shaoning(Lanzhou Institute of Space Technology Physics,Lanzhou Gansu 730000,China)

机构地区：[1]兰州空间技术物理研究所,甘肃兰州730000

出　　处：《电源技术》2021年第3期378-381,共4页Chinese Journal of Power Sources

摘　　要：分析了航天器二次电源系统设计中信号隔离传输的需求,针对传统应用中光耦器件存在的抗辐照敏感及霍尔传感器在高电压测量时功耗大的问题,提出了基于磁隔离的电路解决方案。采用开关电源中常用的器件分别设计了DC/DC变换器中磁隔离反馈电路、磁隔离遥测采样电路、磁隔离基准电压输入电路以及磁隔离驱动电路。实验结果表明,所提出的电路均实现其设计功能,在一定场合能替代霍尔传感器、光耦合器等器件,简化航天器电源系统的设计。The requirements of signal isolation transmission in the design of spacecraft secondary power system were analyzed.Aiming at the shortcomings of the optocoupler's sensitivity to radiation and the large power consumption of the Hall sensor when measuring high voltage,a solution based on a magnetic isolation circuit was proposed.The magnetic isolation feedback circuit,the magnetic isolation telemetry sampling circuit,the magnetic isolation reference voltage input circuit,and the magnetic isolation drive circuit in the DC/DC converter were designed using commonly used devices in the switching power supply.The experimental results show that the circuits proposed in the text have realized their functions,and can replace Hall sensors,optocouplers and other devices in certain occasions,simplifying the design of spacecraft power supply.

关 键 词：二次电源 磁隔离 隔离采样 隔离反馈 

分 类 号：TM57[电气工程—电器]