...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Smart Materials & Structures >Hybrid piezoelectric-electromagnetic energy harvester for scavenging energy from low-frequency excitations
【24h】

Hybrid piezoelectric-electromagnetic energy harvester for scavenging energy from low-frequency excitations

机译：混合压电电磁能量收割机，用于从低频激发中清除能量

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

Capturing mechanical energy from our living environment is an effective approach for implementing self-sustained electronics. One of the key challenges is how to generate more electricity from the low-frequency and multi-directional excitations. To address this interesting issue, this paper reports a hybrid energy harvester (HEH) that consists of a piezoelectric energy harvester (PEH) and an electromagnetic energy harvester (EMEH), which can scavenge energy from both low-frequency and bi-directional excitations. The PEH is composed of two piezoelectric cantilever beams, each of which can deliver a peak power of approximately 0.13 mW when excited directly by a harmonic vibration of 0.8 g. A spherical magnet is utilized to not only trigger the PEH to function, which endows the PEH with bi-directional energy-harvesting capability, but also induce the coil to generate electricity, achieving the integration of EMEH with PEH. When the magnet is subjected to a sinusoidal excitation of 1.24 g, each beam of the PEH generates a peak power of 0.058 mW at 7 Hz and the coil outputs a peak power of 2.94 mW at 7.2 Hz. The HEH exhibits a better charging performance than the PEH or EMEH for charging a capacitor, and the fabricated HEH prototype can light up tens of light-emitting diodes (LEDs) when excited by hand-shaking vibrations.
机译：从我们的生活环境中捕获机械能是实现自我持续电子产品的有效方法。其中一个关键挑战是如何从低频和多方向激励产生更多电力。为了解决这个有趣的问题，本文报告了一种混合能源收割机（HEH），其由压电能量收割机（PEH）和电磁能量收割机（EMEH）组成，可以从低频和双向激发中清除能量。 PEH由两个压电悬臂梁组成，每个压电悬臂梁可以在直接通过0.8g的谐振振动直接激发时提供约0.13mW的峰值功率。球形磁体不仅触发PEH以使PEH与双向能量收集能力赋予PEH，而且诱导线圈产生电力，实现EMEH与PEH的集成。当磁体经受1.24g的正弦激发时，每根束在7 Hz时产生0.058mW的峰值，并且线圈在7.2Hz处输出2.94mW的峰值功率。 HEH表现出比用于对电容器充电的PEH或EMEH更好的充电性能，并且制造的HEH原型可以在通过手动振动激发时亮起几十发光二极管（LED）。

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