Research on trilateral positioning technology for wireless 
charging system based on auxiliary coils

CHEN Qixu; LI Peng; WANG Qunjing

Chinese

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Research on trilateral positioning technology for wireless charging system based on auxiliary coils

Research & Approach | 更新时间：2026-03-18

- Research on trilateral positioning technology for wireless charging system based on auxiliary coils
- Vol. 45, Issue 3, Pages: 36-43(2026)
- 作者机构：
  
  1. 安徽大学电气工程与自动化学院,安徽,合肥,230601
  2. 工业节电与电能质量控制安徽省级协同创新中心,安徽,合肥,230601
  3. 教育部电能质量工程研究中心,安徽,合肥,230601
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP212;TM724
- Published：2026
- 稿件说明：
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CHEN Qixu, LI Peng, WANG Qunjing. Research on trilateral positioning technology for wireless charging system based on auxiliary coils[J]. 2026, 45(3): 36-43.
DOI：

CHEN Qixu, LI Peng, WANG Qunjing. Research on trilateral positioning technology for wireless charging system based on auxiliary coils[J]. 2026, 45(3): 36-43. DOI：

摘要

无线电力传输（WPT）基于非接触方式进行电力传输。WPT系统工作时

发射线圈与接收线圈会存在相对位置的偏移

使得线圈间互感降低

系统无法工作在最佳工况。在三边定位技术的基础之上

提出基于质心定位和最小二乘法定位的三边定位算法

建立了三辅助线圈系统仿真模型

仿真确认了当接收线圈与辅助线圈之间的距离

≥84.53mm时

线圈组之间的交叉互感可忽略不计

在此基础上

实现了发射线圈的精确定位

为收、发线圈对中、提升传输性能提供依据。仿真和实验表明了所提的两种定位算法的可行性。

Abstract

Wireless power transmission(WPT)realizes power transmission based on contactless mode.When the WPT system is operating

the relative position of the transmitting coil and the receiving coil may be offset

which will reduce the mutual inductance between the coils

and the system can not operate in the optimal working condition. Based on the trilateral positioning technology

a trilateral positioning algorithm based on centroid positioning and least square positioning is proposed

and a simulation model of the three-auxiliary-coil system is established.The simulation confirms that when the distance between the receiving coil and the auxiliary coil

≥ 84.53mm

the cross mutual inductance between the coil groups can be ignored.On this basis

the precise positioning of the transmitting coil is realized

which provides a basis for centring and improving the transmission performance of the transceiver coil.Simulation and experiments show the feasibility of the two proposed positioning algorithms.

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