线圈高频损耗解析算法改进及在无线电能传输磁系统设计的应用.pdfVIP

20 15 年 4 月 电 工 技 术 学 报 Vol.30 No. 8 第30 卷第8 期 TRANSACTIONS OF CHINA ELECTROT ECHNICAL SOCIET Y Apr. 2015 线圈高频损耗解析算法改进及在无线电能 传输磁系统设计的应用 黄晓生 陈 为 （福州大学电气工程与自动化学院 福州 350116） 摘要 圆导体环形线圈在磁耦合谐振式无线电能传输系统中应用广泛，线圈高频损耗对磁耦 合系统的分析设计和效率至关重要。针对目前解析计算方法在计算邻近效应损耗时的不足以及有 限元仿真的局限性，本文以螺旋型线圈为例，深入分析了圆导体线圈的趋肤效应与邻近效应，提 出了多匝圆导体线圈高频损耗的通用解析计算方法。该方法适用于任意形状（如螺旋型、涡状） 的漆包线以及多股绞线线圈，比目前其他解析计算方法具有更高的精度和适用范围，且计算速度 快。本文进一步将该方法应用于线圈 Q 值的优化，并通过实测验证了所提出的解析计算方法的计 算高效性和模型准确性。 关键词：无线电能传输 线圈 高频损耗 邻近效应 品质因数 中图分类号：TM15 Improved Analytical Calculation Model of High-Frequency Coil Losses and Its Usage in WPT Magnetic System Huang Xiaosheng Chen Wei （College of Electrical Engineering and Automation, Fuzhou University Fuzhou 350116 China ） Abs tract Circular coil made from cylindrical solid conductor has been wildly used in magnetic resonance wireless power transfer(W PT) system. As key components of sys tem, high frequency losses of coupling coils affects the system efficiency more directly when the operation frequency increase. The existing analytical methods cant meet the requirement of precis ion. Moreover, numerical calculation method such as finite e lement method(FEM) can be used for calculating high frequency losses of multi-turn coil, however, it’s time -consuming and high cost. After fully analyzed s kin effect and proximity effect of helix coil, this paper presents a new analytic method for evaluating high frequency losses of multi-turn cylindrical solid coil. It is fix all cylindrical solid or Litz wire coil which is shaped as