摘要
探究三线圈磁耦合谐振式无线电能传输系统中继线圈的最优轴向位置对优化系统传输性能至关重要,为此深入研究三线圈MCR-WPT系统的传输特性,应用电路互感耦合理论结合同轴线圈互感计算方法得出了系统最大功率和最大效率传输条件;基于上述最优传输条件,对宽负载范围内中继线圈轴向偏移对系统传输特性的影响进行了电磁仿真。仿真结果表明:中继线圈传输功率和传输效率的最优轴向位置与负载有关,均随负载的增大向接收线圈一侧偏移,当电源内阻与负载相等,中继线圈位于耦合机构中间位置时系统可获得最大传输功率,靠近发射线圈一侧时可获得最大传输效率。最后,搭建了三线圈MCR-WPT系统实验平台,实验验证了理论与仿真的正确性。
Exploring the optimal axial position of the relay coil of the three-coil magnetic coupling resonant wireless power transmission system is very important to optimize the transmission performance of the system.To this end,the transmission characteristics of the three-coil MCR-WPT system are deeply studied,the maximum power and maximum efficiency transmission conditions of the system are obtained by applying the circuit mutual inductance coupling theory combined with the coaxial coil mutual inductance calculation method.Based on the above optimal transmission conditions,the electromagnetic simulation of the influence of the axial offset of the relay coil on the transmission characteristics of the system in a wide load range is carried out.The simulation results show that the optimal axial position of the relay coil transmission power and transmission efficiency is related to the load,and both shift to the receiving coil side with the increase of the load.When the internal resistance of the power supply is equal to the load,the system can obtain the maximum transmission power when the relay coil is located in the middle of the coupling mechanism,and the system can obtain the maximum transmission efficiency when it is close to one side of the transmitting coil.Finally,a three-coil MCR-WPT system experimental platform is built,and the experiment verifies the correctness of the theory and simulation.
作者
赵永秀
万光一
王亚辉
魏艺超
Zhao Yongxiu;Wan Guangyi;Wang Yahui;Wei Yichao(School of Electrical and Control Engineering,Xi′an University of Science&Technology,Xi′an 710054,China)
出处
《电子测量技术》
北大核心
2023年第4期1-5,共5页
Electronic Measurement Technology
基金
国家自然科学基金(51777167,51604217)
陕西省教育厅自然科学基金(19JK0529,19JK0545)项目资助
关键词
中继线圈
磁耦合谐振
最优轴向位置
传输特性
relay coil
magnetic coupling resonance
optimal axial position
transmission characteristics
作者简介
赵永秀,博士,副教授,主要研究方向为无线电能传输技术、电力电子技术等。E-mail:yongxiu_zhao@163.com;通信作者:万光一,硕士研究生,主要研究方向为无线电能传输技术。E-mail:969633405@qq.com
