感应电能传输抗偏移非均匀发射线圈的优化设计方法

感应电能传输(Inductive Power Transfer,IPT)技术具有灵活、安全、可靠等优点,适于在人类活动空间内使用。IPT系统的传输效率与线圈之间的互感密切相关。传统均匀线圈IPT系统收发线圈间的互感,受两者间相对位置偏移变化的影响大,导致无线传输功率和效率变化剧烈,大大降低了技术的实用性。非均匀发射线圈具有良好的抗偏移能力,然而基于有限元仿真方法的非均匀线圈设计方法计算量大、实用性差。基于非均匀线圈与均匀线圈间互感的计算公式,采用遗传算法给出了非均匀抗偏移发射线圈的设计方法,并通过有限元仿真方法进行了验证。

Inductive power transfer technology has the advantages of flexibility,safety and reliability,which is suitable using in the environment with human activities.The transmission efficiency of IPT system is closely related to the mutual inductance between the transfer coils.The mutual inductance between the traditional uniform transfer coils varies greatly when misalignment occurs,which resulting in a sharp drop in wireless transmission power and efficiency,which greatly reduces the practicability of the technology.The non-uniform transmitting coil has good anti-misalignment ability,but the finite element simulation which is used in coil design requires a large amount of computing resources,resulting in poor practicability.However,the coil design method based on finite element simulation has a large amount of calculation and poor practicability.Based on the calculation formula of the mutual inductance between a non-uniform coil and a uniform coil,the genetic algorithm is used to give the design method of the non-uniform anti-misalignment transmitting coil,which is verified by the finite element simulation method in this paper.