摘要
功率变换器的工作点影响无线充电系统的输出功率和传递效率,进而影响系统的传输性能。以SS型磁耦合谐振机构为研究对象,构建系统模型,基于互感理论建立T形等效电路;推导系统功率传输公式,从阻抗传输系数的角度分析接收端功率变换器在单边控制和双边控制下不同充电阶段的工作曲线,给出工作点的确定方法。最后,搭建仿真模型和实验平台,完成工作点理论值、仿真值和实验值的对比,并进行了系统传输特性分析,验证了所提出的计算方法的正确性。结果表明,提出的计算方法可以快速确定工作点且具有通用性,对充电系统的电路结构选择和控制方法设计提供了一定参考。
The operating point of the power converter affects the output power and transmission efficiency of the wireless charging system,which further affects the transmission performance of the system.The system model of SS magnetic coupling resonant organization is taken as the research object,the system model is constructed,and the T⁃Type equivalent circuit is built based on mutual induction theory.The power transmission formula of the system is derived,and the working curves of the receiver power converter at different charging stages under unilateral control and bilateral control are analyzed from the perspective of the impedance transfer coefficient,and the determination method of the working point is given.The simulation model and the experimental platform are constructed,the theoretical value,simulation value and experimental value of the operating point are compared,and the transmission feature of the system is analyzed,by which the correctness of the computing method is verified.The proposed computing method can quickly determine the operating points and has commonality,which provides some references for the circuit structure selection and control method design of the charging system.
作者
赵靖英
王雪峰
赵纪新
崔玉龙
ZHAO Jingying;WANG Xuefeng;ZHAO Jixin;CUI Yulong(State Key Laboratory of Reliability and Intelligence of Electrical Equipment of Provincial and Ministerial Joint Construction,Hebei University of Technology,Tianjin 300130,China;Hebei Province Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability,School of Electrical Engineering,Hebei University of Technology,Tianjin 300130,China;Beijing University of Chemical Technology,Beijing 100029,China)
出处
《现代电子技术》
北大核心
2020年第2期118-123,共6页
Modern Electronics Technique
基金
河北省科技型中小企业技术创新资金（16C1303121010）
河北省科技型中小企业技术创新资金(15C1303121014)
关键词
功率变换器
工作点设置
无线充电系统
磁耦合谐振
仿真建模
实验验证
power converter
operating point setting
wireless charging system
magnetic coupling resonant
simulation modeling
experiment verification
