航天用蓄电池充电调节器的控制系统设计

摘要

提出了基于Superbuck电路拓扑的航天用电源控制器(Power Conditioning Unit,PCU)中蓄电池充电调节器(Battery Charge Regulator,BCR)的控制系统设计方法,简述了PCU的基本构成和控制区域划分基本原理,分析了BCR在PCU系统中的运行模式,根据其运行特点,对以4阶Superbuck电路为拓扑的BCR进行了建模,给出了占空比控制的多个变量的传递函数表达式,依此设计了三环并列控制的蓄电池充电调节器,并给出了BCR分别在恒压输出,恒流输出,自稳定输入母线工况下的仿真和实验结果,验证了设计的正确性.%A design of Battery Charge Regulator (BCR) control system based on the Superbuck circuit topology in aerospace' Power Conditioning Unit (PCU) is presented. Structure and the basic control concept of PCU are summarized, and operation mode of BCR is analyzed in detail. Averaged modeling is applied to obtain the BCR model under direct duty-ration control and the transfer functions are listed. According to these, a three-loop controlled BCR is designed. The simulation and experiment results listed at last verify the validity of the design.