电动汽车无线电能传输系统中Buck电路非理想模型及其效率优化  

Non-Ideal Model and Efficiency Optimization of Buck Converter in Electric Vehicle Wireles Power Transfer System

作　　者：肖静 吴宁 冯玉斌 姚知洋 郭小璇 XIAO Jing;WU Ning;FENG Yubin;YAO Zhiyang;GUO Xiaoxuan(Electric Power Research Institute,Guangxi Power Grid Co.,Ltd.,Nanning 530023,China)

机构地区：[1]广西电网有限责任公司电力科学研究院,广西南宁530023

出　　处：《电器与能效管理技术》2020年第4期77-82,112,共7页Electrical & Energy Management Technology

基　　金：南方电网公司科技项目(GXKJXM20162018)。

摘　　要：为了提高电动汽车无线电能传输(EV-WPT)系统中Buck电路的效率,进而提高系统的整体效率,在原有两种简化模型的基础上建立了带寄生参数和开关过程的更接近实际的非理想Buck电路分段线性状态空间模型。基于频闪映射及相轨迹理论,通过仿真,对三种模型下稳态工作点进行了对比分析。最后,基于非理想模型实现了对Buck电路的效率优化设计。In order to improve the efficiency of Buck converter in electric vehicle wireles power transfer(EV-WPT)system and further the overall efficiency of the whole system,a piecewise linear state space model with parasitic parameters and switching process were established based on the original two simplified models,which was closer to the actual non-ideal Buck converter.Based on the stroboscopic mapping and phase trajectory theory,the steady-state working points of the three models were analyzed and compared by simulation.Finally,based on the non-ideal model,the efficiency optimization of the Buck converter was realized.

关 键 词：电动汽车无线电能传输(EV-WPT) BUCK电路 效率优化 频闪映射 相轨迹 

分 类 号：TM724[电气工程—电力系统及自动化]