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电动汽车无线充电技术研究

Analysis of Wireless Charging Technology for Electric Vehicles
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摘要 电动汽车的无线充电技术因其高安全性、智能操作和灵活便利而受到广泛关注。本文介绍了无线充电技术体系结构、电动汽车的种类和特点,然后建立了一个基于磁耦合谐振技术的无线充电系统。分析了PSpice中无线电力传输系统的特点,并在MATLAB/Simulink中建立了充电系统和DC/DC降压变换器电路。通过公式推导和仿真研究了补偿拓扑、谐振频率、谐振线圈降压变换器与系统传输效率和输出功率之间的关系。结果表明,改变线圈参数(如增加线圈半径和匝数),选择合适的工作频率、补偿和逆变电路,可以提高系统的输电效率和负载功率。最后,分析了无线充电技术在电动汽车中可能的发展趋势和应用趋势。 The wireless charging technology(WCT)of electric vehicles(EVs)has attracted widespread attention due to its high safety,intelligent operation and flexible charging.This paper introduces the WCT technical architecture,categories and characteristic of EVs.Then build a wireless charging system based on magnetically coupled resonance technique.Analyze the characteristics of wireless power transfer system in PSpice,and set up charging system and DC/DC buck converter circuit in MATLAB/Simulink.Study the relationship between compensation topologies,resonant frequency,resonant coils buck converter,high-frequency inverter circuit,and system transmission efficiency,output power via formula derivation and simulation.The results show that changing coils parameters(such as increasing coil radius and turns),selecting a suitable operating frequency,compensation,and inverter circuits could improve the system power transmission efficiency and load power.Finally,analyze the possible development trend and application trend of WPT in EVs.
作者 岳娇 吕惠 王亚飞 李佳 Yue Qiao;Lu Hui;Wang Yafei;Li Jia(China Auto Information Technology(Tianjin)Co.,Ltd.,Tianjin 300300)
出处 《中国汽车》 2024年第4期50-58,共9页 China Auto
关键词 无线电能传输 磁耦合系数 传输效率 输出功率 wireless power transfer(WPT) coupled magnetic resonance transmission efficiency output power
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