一种宽输入范围高效率宇航二次电源的设计  

Design of a wide input range and high efficiency space secondary converter

作　　者：李双刚 徐欢 曹佳君 Li Shuanggang;Xu Huan;Cao Jiajun(Shanghai Institute of Space Power-sources,Shanghai 200245,China)

机构地区：[1]上海空间电源研究所,上海200245

出　　处：《电子技术应用》2024年第11期109-113,共5页Application of Electronic Technique

摘　　要：提出一种宽输入电压、高效率100 W宇航二次电源的设计方法。输入电压范围达到20 V~50 V,可覆盖星上28 V母线、42 V母线电压范围。峰值效率达到90%以上,具有体积小、功率密度高的特点。采用单端反激电路拓扑,通过加入斜坡补偿技术,使得反激变换器的占空比工作在60%以上,拓宽了输入电压范围。同时采用平面变压器技术,降低变压器漏感,提高效率并减小尺寸。This article proposes a design method for a wide input voltage and high efficiency 100 W space secondary power sup‐ply.The input voltage range reaches 20 V~50 V,which can cover the voltage range of 28 V and 42 V buses on the satellite.The peak efficiency reaches over 90%,with the characteristics of small size and high power density.Adopting a single ended flyback circuit topology and incorporating slope compensation technology,the duty cycle of the flyback converter operates at over 60%,expanding the input voltage range.Simultaneously using planar transformer technology to reduce transformer leakage inductance,improve efficiency,and reduce size.

关 键 词：二次电源 反激 斜坡补偿 平面变压器 

分 类 号：TN86[电子电信—信息与通信工程]