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为满足卫星电源蓄电池充电调节器(BCR)高可靠的要求,提出了一种BCR稳健性设计分析方法。首先根据BCR的数学模型,设计了电压外环、电流内环控制器,进而在Saber软件环境下建立了BCR仿真模型,获得了标称设计下的系统性能。考虑温度漂移、器件老化等不利因素,依次进行了BCR电路的灵敏度分析、应力分析、参数扫描分析和最坏情况电路分析。分析结果表明设计的BCR母线电压、电路器件降额均满足设计要求,能够保证系统在空间环境中的可靠工作。
In order to meet the high reliability requirements of satellite power supply battery charge regulators (BCRs), a BCR robustness design and analysis method is proposed. First, according to the mathematical model of BCR, the voltage outer loop and current inner loop controller are designed. Then the BCR simulation model is built under the Saber software environment, and the system performance under nominal design is obtained. Considering the unfavorable factors such as temperature drift and device aging, the sensitivity analysis, stress analysis, parameter scanning analysis and worst-case circuit analysis of BCR circuits were carried out in turn. The analysis results show that the design of the BCR bus voltage, circuit device derating all meet the design requirements, to ensure that the system in the space environment, reliable work.