...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Smart Materials & Structures >Numerical analysis of an electromagnetic energy harvester driven by multiple magnetic forces under pulse excitation
【24h】

Numerical analysis of an electromagnetic energy harvester driven by multiple magnetic forces under pulse excitation

机译：脉冲激发下多磁力驱动的电磁能量收割机的数值分析

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 presents a numerical analysis model for an electromagnetic energy harvester that is driven by multiple magnetic forces under pulse excitation. The energy harvester consists of a tube with magnets on both ends and a shuttle magnet moving inside. It converts pulse excitation to oscillation of the shuttle magnet with higher frequency and amplitude. A numerical model was developed to model operation of the energy harvester. The model correlates analytical calculation of magnetic forces and simulation results of magnetic field in Maxwell. Operation of the structure was then analysed using fundamental equations of motion in the time domain. A prototype was fabricated and two example scenarios were tested to verify the numerical model. Experimental results in both scenarios were found to agree with results obtained from the numerical analysis. It was also found in the numerical analysis that initial positions of the end magnets with respect to the shuttle magnet are crucial to the performance of the energy harvester. If the distance between the end magnet and the shuttle magnet reduces, oscillation of the shuttle magnet will last longer but have smaller amplitude. If such distance reduces below a threshold, the shuttle magnet cannot move at all. Furthermore, friction between the shuttle magnet and the tube also affects its oscillation. The lower the friction becomes, the longer the oscillation can last and the higher the oscillation amplitude can be.
机译：本文介绍了电磁能量收割机的数值分析模型，该模型由脉冲激励下的多个磁力驱动。能量收割机由两端的带有磁铁的管和梭子磁铁移动。它将脉冲激励转换为具有更高频率和幅度的梭磁体的振荡。开发了一种数值模型，以模拟能量收割机的运行。该模型与麦克斯韦磁场磁力分析和仿真结果相关联。然后使用时域中的基本运动来分析结构的操作。制造了原型，并测试了两个示例场景以验证数值模型。发现这两种情况的实验结果都同意从数值分析中获得的结果。在数值分析中也发现，终端磁体相对于梭磁体的初始位置对能量收割机的性能至关重要。如果端部磁铁和梭磁体之间的距离减少，则梭磁铁的振荡将持续较长但具有较小的振幅。如果这样的距离减少到阈值以下，则梭磁体根本不能移动。此外，梭子磁铁和管之间的摩擦也会影响其振荡。摩擦越低，振荡能够持续越长，振荡幅度越高。

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