电工技术学报  2022, Vol. 37 Issue (16): 4019-4028    DOI: 10.19595/j.cnki.1000-6753.tces.211330
电工理论 |
基于双边LCL变补偿参数谐振式无线充电系统的研究与分析
王党树1, 董振1, 古东明1, 仪家安1, 栾哲哲1, 王新霞2
1.西安科技大学电气与控制工程学院 西安 710054;
2.西安科技大学理学院 西安 710054
Research and Analysis of Resonant Wireless Charging System Based on Bilateral LCL Variable Compensation Parameters
Wang Dangshu1, Dong Zhen1, Gu Dongming1, Yi Jiaan1, Luan Zhezhe1, Wang Xinxia2
1. School of Electrical and Control Engineering Xi’an University of Science and Technology Xi’an 710054 China
2. School of Science Xi’an University of Science and Technology Xi’an 710054 China
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摘要 为了解决无线充电中恒流充电模式向恒压充电模式切换过程复杂、控制电路设计难度系数高的问题,该文基于双边LCL拓扑设计一种变补偿参数的磁耦合谐振式无线充电系统,该系统仅需投切副边额外增加的电感即可完成恒流充电向恒压充电的平滑转换,省去原、副边之间的通信,降低控制电路设计的复杂性,提高无线充电系统整体的效率和稳定性。该文首先对双边LCL变补偿拓扑进行理论分析,推导得到系统原边恒流、副边恒流恒压的条件;然后通过对系统恒流向恒压切换过程进行瞬态分析,实现切换的平滑过渡;最后对所设计的无线充电系统进行仿真与实验验证。结果表明:该系统可以实现恒流向恒压的平滑切换,且在恒流3A和恒压60V的充电条件下充电电流偏差和充电电压偏差较低,分别为1.65%和1.8%,均满足电池充电要求;并在恒压充电模式下,系统副边谐振网络输出电流波形得到明显改善,波形畸变率由15.43%降到1.24%。
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王党树
董振
古东明
仪家安
栾哲哲
王新霞
关键词 无线充电双边LCL恒流恒压    
Abstract:In wireless charging, the switching process from constant current charging mode to constant voltage charging mode is complicated, and the control circuit design is difficult. Therefore, this paper designs a magnetic coupling resonant wireless charging system with variable compensation parameters based on the bilateral LCL topology. The system only needs to switch the additional inductance of the secondary side to complete the smooth conversion from constant current charging to constant voltage charging, thereby eliminating the communication between the original secondary side, reducing the complexity of control circuit design and improving the overall efficiency and stability of the wireless charging system. Firstly, the paper theoretically analyzes of the bilateral LCL variable compensation topology, and derives the conditions for the constant current and constant voltage of the primary side of the system. Then, through the transient analysis of the system constant current to constant voltage switching process, the smooth transition of the switching is realized. Finally, the designed wireless charging system is simulated and experimentally verified. The results show that the system can achieve smooth switching from constant current to constant voltage, and the charging current deviation and charging voltage deviation are 1.65% and 1.8% respectively under the charging conditions of constant current 3A and constant voltage 60V, which meet the battery charging. requirements. In the constant voltage charging mode, the output current waveform of the secondary side resonant network of the system is significantly improved, and the waveform distortion rate is reduced from 15.43% to 1.24%.
Key wordsWireless charging    bilateral LCL    constant current    constant voltage   
收稿日期: 2021-08-23     
PACS: TM46  
基金资助:国家自然基金面上项目(51777167)和国家自然基金青年项目(51604217)资助
通讯作者: 董振,男,1997年生,硕士研究生,研究方向为电力电子技术。E-mail: 1174762596@qq.com   
作者简介: 王党树,男,1976年生,副教授,研究方向为电力电子技术。E-mail: wangdangshu@126.com
引用本文:   
王党树, 董振, 古东明, 仪家安, 栾哲哲, 王新霞. 基于双边LCL变补偿参数谐振式无线充电系统的研究与分析[J]. 电工技术学报, 2022, 37(16): 4019-4028. Wang Dangshu, Dong Zhen, Gu Dongming, Yi Jiaan, Luan Zhezhe, Wang Xinxia. Research and Analysis of Resonant Wireless Charging System Based on Bilateral LCL Variable Compensation Parameters. Transactions of China Electrotechnical Society, 2022, 37(16): 4019-4028.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.211330          https://dgjsxb.ces-transaction.com/CN/Y2022/V37/I16/4019