摘要
针对电动汽车需要分段式恒流充电以及无线充电的输出电流易受自身参数和环境变化影响的问题,应用电路理论分析了双LCC拓扑无线充电系统的动态特性,并通过扩展函数描述法(EDF)建立了描述该系统受扰动时的小信号模型,进而提出了一种基于双LCC补偿拓扑结构下电流-电流环的双闭环控制策略,实现了电动汽车无线充电的自整定控制。最后通过仿真验证了该系统能够有效减小动态响应时间和输出电流纹波系数,并且搭建谐振频率为85kHz电动汽车无线充电实验平台,验证了理论与仿真的正确性。
Aiming at the problem that electric vehicles need sectional constant current charging and the output current of wireless charging is susceptible to the influence of their own parameters and environmental changes,Application of circuit theory to analyze the dynamic characteristics of a dual LCC topology wireless charging system.A small signal model describing the disturbance of the system is established by EDF modeling method.A double closed-loop current-current loop system based on double LCC compensation topology is proposed to realize the self-tuning control of electric vehicle wireless charging.Finally,the simulation results show that the system can effectively reduce the dynamic response time and output current ripple coefficient.The experimental platform of wireless charging with resonant frequency of 85 kHz is built to verify the correctness of the theory and simulation.
作者
张献
任年振
杨庆新
王杰
Zhang Xian;Ren Nianzhen;Yang Qingxin;Wang Jie(Tianjin Key Laboratory of Advanced Technology of Electrical Engineering and Energy Tianjin Polytechnic University,Tianjin 300387 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2020年第23期4825-4834,共10页
Transactions of China Electrotechnical Society
基金
国家自然科学基金(51677132,51977147)
国家重点研发计划(2018YFB0106303)资助。
关键词
双LCC补偿拓扑
小信号模型
双闭环
自整定控制
Double LCC compensation topology
small signal model
double closed loop
self-tuning control
