This paper investigates the stability and reliability analysis of a non-isolated high-gain DC-DC converter. The proposed DC-DC converter produces a high gain output voltage with a lower duty ratio and reduced voltage stress on the semiconductor switch. A reliability analysis is performed to predict the failure rate and lifetime of the individual components using the military handbook (MIL-HDBK-217F). A state space equation and small signal modeling of the proposed converter are derived to elucidate the performance of the proposed converter through stability analysis. A closed-loop using PID controller is incorporated to attain the constant regulated output voltage during sudden parameter changes. The validation of the closed-loop using the PID controller is verified with the wide range of variations in the different parameters, such as input voltage, load value, and reference voltage value. The laboratory-based prototype is developed for the proposed converter and validated the performance with 250 W. The power density and efficiency of the proposed converter are 1.360 kW/L and 93%, respectively.

中文翻译：

---

非隔离高增益DC-DC变换器的稳定性和可靠性分析

本文研究了非隔离高增益 DC-DC 转换器的稳定性和可靠性分析。所提出的 DC-DC 转换器可产生具有较低占空比的高增益输出电压，并减少半导体开关上的电压应力。使用军事手册 (MIL-HDBK-217F) 进行可靠性分析，以预测各个组件的故障率和使用寿命。推导出所提出转换器的状态空间方程和小信号建模，以通过稳定性分析阐明所提出转换器的性能。采用闭环 PID 控制器，可在参数突然变化时获得恒定的调节输出电压。使用 PID 控制器的闭环验证通过不同参数（例如输入电压、负载值和参考电压值）的大范围变化进行验证。基于实验室的原型是为所提议的转换器开发的，并在 250 W 功率下验证了性能。所提议的转换器的功率密度和效率分别为 1.360 kW/L 和 93%。