现代电子技术2026，Vol.49Issue(18)：1-5,10,6.DOI:10.16652/j.issn.1004-373X.2026.18.001
一种适用于卫星姿态控制的移相全桥变换器研究
Research on phase-shifted full-bridge converter for attitude control of satellite
摘要
Abstract
Phase-shifted full-bridge(PSFB)converters boasts have advantages such as simple control,soft-switching operation of switching devices and small size,which are widely applied in the field of secondary power conversion for aeronautics and astronautics.However,for some aeronautics and astronautics loads that require wide-range adjustment of the output power of power supplies,the PSFB converter has drawbacks including large circulating current in bridge arms under light load and low operating efficiency.In allusion to the efficiency optimization issues including low light-load efficiency of PSFB converters and the inability of the radiation-hardened analog controller UC1875J to realize multi-mode control,on the basis of the traditional phase-shift control strategy,a method of hybrid control combining PWM mode and variable frequency mode based on analog circuit is proposed,which can automatically make judgments and switch to the corresponding control mode under light-load conditions of the output load.An engineering prototype with a power rating of 300 W and an output voltage of 46 V is built to verify the proposed method.The experimental results demonstrate that the proposed hybrid control method can improve the light-load efficiency of the converter,and its light-load efficiency is better than traditional phase-shift control after actual measurement and comparison of different mixing mode control methods.The efficiency of the prototype at 0.5 A load is increased from 66%to 71%,while the converter can maintain stable operation across the entire load range with a peak efficiency of 85%.关键词
移相全桥变换器/卫星姿态控制/变频调制/PWM控制/混合控制/效率优化Key words
phase-shifted full-bridge/satellite attitude control/variable frequency modulation/PWM control/hybrid control/efficiency optimization分类
信息技术与安全科学引用本文复制引用
王立伟,原大康,刘飞,李荷丹,翟百臣..一种适用于卫星姿态控制的移相全桥变换器研究[J].现代电子技术,2026,49(18):1-5,10,6.基金项目
国防科技基础加强计划先进能源技术领域基金(2022-JCJQ-JJ-0265) （2022-JCJQ-JJ-0265）
