...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Transactions on Energy Conversion >A Closed-Form Analytical Method for Reliable Estimation of Equivalent Thermal Conductivity of Windings With Round-Profile Conductors
【24h】

A Closed-Form Analytical Method for Reliable Estimation of Equivalent Thermal Conductivity of Windings With Round-Profile Conductors

机译：A Closed-Form Analytical Method for Reliable Estimation of Equivalent Thermal Conductivity of Windings With Round-Profile Conductors

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

摘要

Overheating of windings is one of the key factors limiting the power density of electric machines. However, thermal modeling of windings is challenging due to the extremely fine and heterogeneous structures. Without adequately addressing the microscopic heat flux field in windings, the commonly used models, even those with conductor insulation accounted for, may give divergent estimations for the equivalent thermal conductivity of windings. Considering the negligible thermal resistance of conductors, we propose a perfect-conductor methodology for thermal modeling of windings, which enables us to derive a closed-form solution to the heat flux field in the impregnation between round wires. From this heat flux solution, the effective thermal resistance of the impregnation, which constitutes the vast majority of that of the whole winding, can then be calculated, based on which a homogenization model is obtained for the equivalent thermal conductivity of the winding. A comparative study confirms that the present perfect-conductor model is more reliable than those commonly used ones. Although only windings formed with round wires are considered here, the perfect-conductor methodology can also facilitate addressing the heat flux profile for other winding constructions.

著录项

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