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投稿时间：2018-04-18
投稿时间：2018-04-18
中文摘要: 基于电路理论，建立了双发射结构磁谐振式无线电能传输（WPT）系统的等效互感模型。与单发射结构相比，双发射结构可以提高负载接收功率和传输效率，而且随着发射线圈与接收线圈之间耦合系数的降低，双发射结构的优势更加明显。结合数值仿真试验，对比得出当两种结构的接收线圈发生横向偏移与角度偏转时，负载功率和传输效率的比值分别可达2.8和1.39以上，验证了理论分析的正确性。最后，进一步分析了两种结构在欠耦合、临界耦合、过耦合3种区域的传输效率，发现双发射结构可以增加系统的纵向传输距离，且在临界耦合区域内可以有效扩大系统的横向传输范围。
Abstract:Firstly,the mutual inductance equation of the double transmitters(DT) structure is established,which theoretically demonstrates that the structure can significantly improve the received power(RP) and transmission efficiency(TE).Especially,the lower coupling coefficient,the more obvious advantage of the double transmitters structure.And then combined with numerical simulation,the ratio of RP and TE are more than 2.8 and 1.39 respectively when the receiving coil of two structures has horizontal movement and angular deflection,which verifies the theoretical analysis.Finally,the TE of two structures in three regions (over-coupled,critical-coupled and under-coupled)is analyzed,and the results show that DT structure can increase the longitudinal distance and under the critical-coupled region,it also can expand the lateral transmission range.
keywords: wireless power transmission double transmitters coupling coefficient transmission efficiency transmission direction
文章编号：20194004 中图分类号：TM72 文献标志码：
基金项目:国家自然科学基金（51607110）。
| 作者 | 单位 | |
| 吴晓春 | 上海电力学院 | |
| 田孟林 | 国网山东省电力公司济宁供电公司 | |
| 连海生 | 上海电力学院 | |
| 夏能弘 | 上海电力学院 | xia_nh@shiep.edu.cn |
引用文本：
吴晓春,田孟林,连海生,等.双发射结构磁谐振式无线电能传输系统传输特性研究[J].上海电力大学学报,2019,35(4):321-326,332.
WU Xiaochun,TIAN Menglin,LIAN Haisheng,et al.Analysis of Double Transmitters in Magnetic Resonance Coupled WPT System[J].Journal of Shanghai University of Electric Power,2019,35(4):321-326,332.
吴晓春,田孟林,连海生,等.双发射结构磁谐振式无线电能传输系统传输特性研究[J].上海电力大学学报,2019,35(4):321-326,332.
WU Xiaochun,TIAN Menglin,LIAN Haisheng,et al.Analysis of Double Transmitters in Magnetic Resonance Coupled WPT System[J].Journal of Shanghai University of Electric Power,2019,35(4):321-326,332.