高增益Weinberg放电调节电路的仿真研究

Simulation Study of a High Gain Weinberg Discharge Regulating Circuit

航天器主要包括载荷系统和保障系统,而电源分系统是保障系统的核心部分,主要负责航天器上电能的产生、储存、变换、调节和分配等工作。航天器电源分系统包括分流、充电和放电以及其它保护电路。而放电调节电路是在地影期或光照期时负载瞬时功率大于太阳阵最大输出功率,保障蓄电池安全可靠的给航天器负载供电,起到稳定母线电压和功率传输的作用。传统的温伯格(Weinberg)放电调节电路的最大电压增益为2,只适用于母线电压是一倍输入电压到二倍输入电压的场合。针对航天器低压蓄电池终值,输出高压母线电源的要求,提出一种高增益Weinberg放电调节电路。详细分析了新型Weinberg电路的工作原理、电性能以及主要参数的计算,最后采用Saber和MATLAB电力电子软件进行仿真验证,仿真结果表明,新型Weinberg电路能够有效提高电路增益。

The spacecraft mainly includes the load system and the support system, and the power supply system is the core part of the support system. It is mainly responsible for the generation, storage, transformation, adjustment and distribution of the electric energy on the spacecraft. The spacecraft power subsystem includes shunt, charging and discharging, and other protection circuits. The discharge regulation circuit is the maximum output power of the load in the earth shadow period or the light period, which ensures the safety and reliability of the battery to power the load of the spacecraft, and plays the role of stabilizing the bus voltage and power transmission. The maximum voltage gain of the traditional Weinberg discharge regulator circuit is 2, which is only applicable to occasions where the bus voltage is double input voltage to two times the input voltage. In this paper, ahigh gain Weinberg discharge regulation circuit was proposed for the terminal value of low-voltage storage battery and output of high voltage bus - bar power supply. The working principle of the new Weinberg circuit, the electrical performance and the calculation of the main parameters were analyzed in detail. Finally, the Saber and MATLAB power electronic softwares were used for simula tion verification. The simulation experiment results show that the new Weinberg circuit can improve the circuit gain effectively.