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J. Hefei Univ. Tech. (Nat. Sci.)

合肥工业大学学报(自然科学版)

JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY (NATURAL SCIENCE)

Competent Authorities: Ministry of Education of the People's Republic of China

Sponsor by: Hefei University of Technology

ISSN 1000-1646, CN 34-1001/N

Optimization strategy for electric field leakage of magnetic coupling mechanism in ICPT system

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ICPT 系统磁耦合机构电场泄露优化策略

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), May.2026, Vol.49 No.5: 604-612

DOI: 10.3969/j.issn.1003-5060.2026.05.005

Authors

ZHAO Shicheng, SU Jianhui, ZHANG Jian, TONG Zhan'anxin, SHI Yong, YANG Gang

(School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China)

Abstract and Keywords

Abstract: Inductively coupled power transfer (ICPT) is a wireless transmission technology that utilizes near-field coupling of medium to low frequency (10-1 000 kHz) electromagnetic fields. Adding a metal shielding layer to the coil coupling mechanism can effectively reduce magnetic field leakage, but it cannot effectively shield the electric field, resulting in a leakage field around the coil. Therefore, there may be a risk of electric shock when the human body comes into contact with the conductors around the coupling mechanism. In this paper, an equivalent capacitance model of the magnetic coupling mechanism is first established to analyze the leakage field induced voltage, thereby calculating the induced voltage when the human body contacts the metal shielding layer of the magnetic coupling mechanism. Then, a new ICPT system structure and its optimization strategy are proposed, effectively lowering the induced voltage of the metal conductor near the coupling mechanism to comply with the safety standards. Finally, experiments were conducted on the ICPT system prototype to verify the accuracy of the established model and the effectiveness of the optimization method.

Keywords: inductively coupled power transfer (ICPT); equivalent capacitance model; induced voltage; safety issue

作者信息

赵士澄，苏建徽，张健，童湛安心，施永，杨刚

（合肥工业大学电气与自动化工程学院，安徽合肥230009）

摘要和关键词

摘要: 感应耦合式无线电能传输(inductively coupled power transfer, ICPT)是利用中低频(10～1 000 kHz)电磁场的近场耦合实现电能的无线传输技术, 在线圈耦合机构中添加金属屏蔽层可以有效减少磁场泄露, 但对电场的屏蔽效果有限, 导致线圈周围存在漏电场, 当人体接触到耦合机构周围的导体时可能存在触电危险。文章首先建立用于分析漏电场感应电压问题的磁耦合机构等效电容模型, 并计算出人体接触磁耦合机构金属屏蔽层时的感应电压; 进而提出一种新型ICPT系统结构及其优化策略, 有效地将耦合机构附近金属导体的感应电压降低到安全标准以内; 最后通过ICPT系统样机实验, 验证了所建立模型的准确性与优化方法的有效性。

关键词: 感应耦合式无线电能传输（ICPT）；等效电容模型；感应电压；安全问题

Funding

安徽省自然科学基金资助项目（2308085ME180）；中央高校基本科研业务费专项资金资助项目（PA2022GDGP0032）

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