一种航天用高增益Weinberg放电调节电路

A high gain Weinberg discharge regulating circuit for aerospace use

电源分系统是航天器的保障系统,负责航天器电能的存储、转换以及分配等工作。航天器电源分系统包括分流、充电和放电以及其他保护电路。而放电电路是在地影期或负载瞬时功率大于太阳阵最大输出功率时,保障蓄电池安全可靠的给负载供电,起到稳定母线电压和功率传输的作用。传统的Weinberg放电调节电路的电压增益M的范围为1≦M≦2,只适用于中低压母线场合。针对航天器高压母线电源的要求,提出一种高增益Weinberg放电调节电路。文中详细分析了新型Weinberg电路的电性能以及主要参数的计算,最后通过搭建600 W实验样机进行实验验证,实验结果表明该新型Weinberg电路能够有效提高电路增益。

Power subsystem is the support system of spacecraft,which is responsible for the storage,conversion and distribution of spacecraft power.The spacecraft power subsystem includes shunt,charging and discharging,and other protection circuits.The discharge circuit is to ensure the safe and reliable power supply of the battery when the earth shadow period or the instantaneous power of the load is greater than the maximum output power of the solar array.It plays a role in stabilizing the bus voltage and power transmission.The traditional Weinberg discharge regulator circuit has a voltage gain M of 1≤M≤2,which is only suitable for medium and low voltage bus applications.A high gain Weinberg discharge regulation circuit is proposed for spacecraft high voltage bus power supply.In this paper,the electrical performance and the calculation of the main parameters of the new Weinberg circuit are analyzed in detail.Finally,the 600 W experimental prototype is built to verify the experimental results.The experimental results show that the new Weinberg circuit can improve the circuit gain effectively.