...
  • 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 >Improved Cooling Performance of Large Motors Using Fans
【24h】

Improved Cooling Performance of Large Motors Using Fans

机译：使用风扇改善大型电机的冷却性能

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

This paper studies the cooling performance by axial fans with forward-swept and inclined blades and a structure with low ventilation resistance for large-capacity open-type motors. The ventilation resistance of axial fans for motors is much greater than that of common fans for creating draughts. Flow separates remarkably on the blades' surfaces and fluid noise is large. We reduced the ventilation resistance inside an electric motor and adopted axial fans with forward-swept and inclined blades. We confirmed by wind tunnel experiment that the flow rate with this combination increases remarkably compared with the conventional ventilation structure and axial fans. Numerical fluid analysis was performed on the flow around the blade at this flow rate. It was confirmed that no flow separation appeared for the air flow along the blade surfaces. This was also observed in a flow visualization experiment. Furthermore, an actual motor with both the low-ventilation-resistance structure and axial fans with forward-swept and inclined blades showed that the flow rate of cooling air increased by 80% compared with that of conventional machines, and the average temperature rise of stator windings decreased by 30%. Thus, the cooling performance was greatly improved.
机译：本文研究了具有前掠和倾斜叶片的轴流风扇的冷却性能，以及一种用于大容量开放式电机的低通风阻力的结构。电机用轴流风扇的通风阻力远大于产生通风的普通风扇的通风阻力。叶片表面的流动明显分开，流体噪音很大。我们降低了电动机内部的通风阻力，并采用了带有前掠和倾斜叶片的轴流风扇。我们通过风洞实验证实，与传统的通风结构和轴流风机相比，这种组合的流量显着增加。以该流速对叶片周围的流动进行数值流体分析。确认没有出现沿叶片表面的气流分离现象。在流动可视化实验中也观察到了这一点。此外，一台既具有低通风阻力结构又具有前掠和倾斜叶片的轴流风扇的实际电动机表明，与传统机械相比，冷却空气的流量增加了80％，并且定子的平均温度上升绕组减少了30％。因此，冷却性能大大提高。

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