...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Transactions on Industry Applications >Analytical Calculation of Proximity-Effect Resistance for Planar Coil With Litz Wire and Ferrite Plate in Inductive Power Transfer
【24h】

Analytical Calculation of Proximity-Effect Resistance for Planar Coil With Litz Wire and Ferrite Plate in Inductive Power Transfer

机译：Litz线和铁氧体板在感应功率传递中平面线圈的接近效应电阻的解析计算

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Planar coils are popularly used in inductive power transfer applications. The coils' efficiency is improved with litz wire by eliminating the winding's skin-effect loss, but the proximity-effect loss still needs to be considered. To calculate the proximity-effect resistance, the magnetic fields across the windings are required. During the coils' optimization process, numerical methods of field calculation are too time-consuming due to the parametric sweep of physical parameters. The analytical calculation of the magnetic field is preferred in this scenario, but it becomes complex with the existence of the ferrite plate, which is used to increase the coils' coupling. In this paper, the method of image is applied to simplify the analytical calculation, in which the magnetic fields across the windings are derived from Ampere's law and Biot-Savart law. The proximity-effect resistance is then calculated with these fields. The study also proves that the size of the ferrite plate has negligible influence on the proximity-effect resistance as long as it is larger than the size of the winding. A planar coil was fabricated and measured to verify the analytical calculation of the proximity-effect resistance, using litz wire composed of 100 strands with 0.1 mm diameter. A square plate of 3C96 ferrite with the dimensions of 100 mm x 100 mm x 5 mm was placed below the winding. The difference between calculation and measurement is less than 15%.
机译：平面线圈广泛用于感应功率传输应用。利兹线通过消除绕组的集肤效应损耗而提高了线圈的效率，但仍需考虑邻近效应损耗。为了计算邻近效应电阻，需要跨绕组的磁场。在线圈的优化过程中，由于物理参数的参数扫描，场计算的数值方法太耗时。在这种情况下，磁场的解析计算是首选方法，但是由于铁氧体板的存在而变得复杂，铁氧体板用于增加线圈的耦合。在本文中，使用图像方法简化了分析计算，其中绕组两端的磁场是根据安培定律和比奥-萨瓦特定律得出的。然后使用这些字段计算接近效应电阻。研究还证明，只要铁氧体板的尺寸大于绕组的尺寸，其对邻近效应电阻的影响就可以忽略不计。使用由100股直径为0.1 mm的绞合线组成的绞合线，制造并测量了平面线圈，以验证对邻近效应电阻的分析计算。将尺寸为100 mm x 100 mm x 5 mm的3C96铁氧体方形板放置在绕组下方。计算和测量之间的差异小于15％。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号