任意空间位置下改进的互感系数计算方法  

An Improved Method for Calculation of Mutual Inductance at Arbitrarily Spatial Location

作　　者：熊慧[1,2] 刘来 刘近贞[1,2] XIONG Hui;LIU Lai;LIU Jin-zhen(College of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin 300387, China;Tianjin Key Laboratory of Advanced Electrical Engineering and Energy Technology, Tianjin 300387, China)

机构地区：[1]天津工业大学电气工程与自动化学院,天津300387 [2]天津市电工电能新技术重点实验室,天津300387

出　　处：《传感器世界》2018年第6期7-11,共5页Sensor World

基　　金：天津市高等学校创新团队培养计划资助(NO.TD13-5036)

摘　　要：在无线能量传输系统中,两个线圈之间的互感系数是影响传输效率的关键性因素之一。当两个线圈之间的相对空间位置变化时,对不同空间位置下两个线圈之间互感系数的计算就显得尤为重要。针对多层平面螺旋圆线圈,基于聂以曼公式提出了一种改进的互感系数的理论计算方法。计算出两个线圈之间出现轴心偏移、横向偏移以及角度偏移情况下的互感系数,并与有限元仿真和实验测量结果进行对比,验证了所提出理论计算方法的正确性。该计算方法可以计算任意空间位置下多层平面螺旋线圈之间的互感系数,而且适用于螺线管线圈和单层平面螺旋线圈,为线圈的设计和优化提供了理论依据。In the wireless power transfer system, the mutual inductance between two coils is one of the key factors affecting transfer efficiency. The calculation of the mutual inductance between two coils is especially important when the relative spatial location varies. In this paper, an improved calculation method based on Neumann formula for the mutual inductance calculation between multi-layer planar spiral coils is presented. The mutual inductance coefficients between two coils under axial offset, lateral displacement and angular misalignment are calculated and compared with the results of finite element simulation and experimental measurement, and the correctness of the proposed theoretical calculation method is verified. This calculation method can be used to calculate the mutual inductance between the multi-layer planar spiral coils in arbitrary space position and applied to helical coil and singlelayer planar spiral coil, which provides a theoretical basis for the design and optimization of coils.

关 键 词：无线能量传输 互感系数 空间位置 多层平面螺旋线圈 

分 类 号：TP724[自动化与计算机技术—检测技术与自动化装置]