基于多物理场耦合分析的水下副边旋转阵列式LCT温升研究  

Research on Temperature Rise of Underwater Secondary Edge Rotating Array LCT Based on Multi Physics Field Coupling Analysis

作　　者：程志远 刘亭亭 张志芹 宋晓逸 吴海丽 CHENG Zhiyuan;LIU Tingting;ZHANG Zhiqin;SONG Xiaoyi;WU Haili(College of Electrical Engineering,Shanghai University of Electric Power,Yangpu District,Shanghai 200090,China)

机构地区：[1]上海电力大学电气工程学院,上海市杨浦区200090

出　　处：《中国电机工程学报》2025年第6期2367-2377,I0028,共12页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

基　　金：国家自然科学基金项目(51877129)。

摘　　要：松耦合变压器(loosely coupled transformer,LCT)是实现水下无线电能传输(wireless power transfer,WPT)的核心组件,一般需满足简易充电对位、强抗偏移能力、轻量化及低电磁辐射与温升需求。为此,首先提出一种副边旋转阵列式水下LCT结构,该结构配合所设计的笼状对接装置,简化充电对位同时可有效防止径向偏移,由于拾取机构采用旋转阵列式磁芯结构,极大降低了自主式水下航行器(autonomous underwater vehicles,AUV)负重,进而提高AUV的机动性与续航能力。关于水下LCT温升研究,鉴于传统三维电磁模型和传热原理难以估计水下LCT不均匀损耗与温度分布,利用COMSOL搭建水下LCT电磁-热-流多物理场耦合仿真模型,同时为实现热点分布的精准计算,建模过程中充分考虑海水涡流及外壳等相关因素对水下LCT温升的影响。仿真与实验结果表明,所建立的物理模型热点与实际测量值最大误差仅为2.13%,模型温升分布规律能够较准确反映实际情况,验证了该模型的有效性与合理性。结果可为水下LCT优化散热进而提升水下WPT系统性能、寿命及可靠性提供一定理论依据。The loose coupled transformer(LCT)is the core component for implementing wireless power transfer(WPT)underwater.It generally needs to meet the requirements of simple charging alignment,strong anti-offset ability,lightweight,and low electromagnetic radiation and temperature rise.For this purpose,this article first proposes a secondary-side rotating array underwater LCT structure.In conjunction with the designed cage docking device,this structure simplifies charging alignment and effectively prevents radial displacement.Due to the use of a rotating array magnetic core structure in the picking mechanism,the weight of autonomous underwater vehicles(AUVs)is greatly reduced,thereby improving the maneuverability and endurance of AUVs.Regarding the research on the temperature rise of underwater LCT,considering that traditional three-dimensional electromagnetic models and heat transfer principles are difficult to estimate the uneven losses and temperature distribution of underwater LCT,this paper uses COMSOL to build a multi-physics coupling simulation model of underwater LCT electromagnetic heat flow.At the same time,to achieve accurate calculation of hotspot distribution,the modeling process fully considers the influence of factors such as seawater eddy currents and shells on the temperature rise of underwater LCT.The simulation and experimental results show that the maximum error rate between the established physical model hotspot and the actual measurement value is only 2.13%.The temperature rise distribution law of the model can accurately reflect the actual situation,verifying the effectiveness and rationality of the model.This provides a theoretical basis for optimizing the heat dissipation of underwater LCT and improving the performance,lifespan,and reliability of underwater WPT systems.

关 键 词：水下无线电能传输 旋转阵列式松耦合变压器 多物理场耦合 热点分布 轻量化 

分 类 号：TM724[电气工程—电力系统及自动化]