重庆理工大学学报2025，Vol.39Issue(5)：186-194,9.DOI:10.3969/j.issn.1674-8425(z).2025.03.024
光储三有源桥变换器占空比移相控制策略
Phase-shifting control strategy of duty cycle of photo-storage three-active bridge converter
摘要
Abstract
To address the voltage mismatch and soft switching of the three-port converter due to the fluctuation of the input voltage of the photovoltaic and energy storage terminals,the duty cycle phase shift control is employed to optimize the soft switching.First,the equivalent circuit based on the optical storage isolation three-port converter is analyzed and the soft switching conditions of the converter are derived.Then,for the voltage fluctuation of the input port of optical storage,a simple and effective duty cycle control strategy is given and the duty cycle applied to the transformer winding voltage is adjusted through the DC voltage change at the port to realize soft switching in the whole working range and improve the transmission efficiency of the converter.Next,the control strategy based on double PI rings is adopted to achieve the coordinated distribution of constant output voltage and power.After the theoretical analysis,the simulation software is employed to preliminarily verify the advantages of duty cycle phase shift control over single phase shift control.Finally,an experimental prototype of the converter is built for verification.Our results demonstrates the feasibility and effectiveness of our control strategy.关键词
三端口变换器/软开关/占空比/功率协调分配Key words
three-port converter/soft switching/duty cycle/coordinated distribution of power分类
信息技术与安全科学引用本文复制引用
李山,肖冬阳,李海啸,冉卓鑫..光储三有源桥变换器占空比移相控制策略[J].重庆理工大学学报,2025,39(5):186-194,9.基金项目
重庆市自然科学基金面上项目(CSTB2022NSCQ-MSX0997) （CSTB2022NSCQ-MSX0997）
重庆市教委青年研究项目(KJQN202201153) （KJQN202201153）
重庆理工大学科研启动基金项目(2021ZDZ013) （2021ZDZ013）
