中国电机工程学报2024，Vol.44Issue(8)：3189-3201,中插21,14.DOI:10.13334/j.0258-8013.pcsee.230367
双有源桥串联谐振变换器的暂态过程与控制
Transient Process and Control of Dual-bridge Series Resonant Converter
摘要
Abstract
During the rapid adjustment of transmission power,the dual-bridge series resonant converter(DBSRC)based on phase-shifting control will have a large step change in the phase shift angle,resulting in a large amplitude and long settling time oscillation process in the resonant cavity.Not only the dynamic performance of the converter is seriously deteriorated,but also the circuit components suffer from serious overvoltage and overcurrent.In this paper,a general calculation model of the transient process in DBSRC based on the fundamental harmonic approximation is derived,and the oscillation characteristics in the transient process are analyzed.Then,the resonant voltage peak,the resonant current peak and the transient settling time in the transient process are estimated accurately.Based on the transient process calculation model,this paper proposes a suppression method for the oscillation phenomenon,which can force the converter to reach a new steady state after one switching cycle,thereby effectively avoid the risk of overvoltage and overcurrent and greatly improve the dynamic performance of the closed-loop control.Finally,the theoretical analysis results and the proposed control method are verified by simulations and experiments.关键词
双有源桥串联谐振变换器/暂态过程/暂态建模/电压应力/电流应力/振荡抑制Key words
dual-bridge series resonant converter(DBSRC)/transient process/transient model/voltage stress/current stress/oscillation suppression分类
信息技术与安全科学引用本文复制引用
李卓蓝,张宇..双有源桥串联谐振变换器的暂态过程与控制[J].中国电机工程学报,2024,44(8):3189-3201,中插21,14.基金项目
国家自然科学基金项目(51977092). Project Supported by National Natural Science Foundation of China(51977092). （51977092）
