...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Mechatronics, IEEE/ASME Transactions on >Impedance Modeling and Analysis for Piezoelectric Energy Harvesting Systems
【24h】

Impedance Modeling and Analysis for Piezoelectric Energy Harvesting Systems

机译：压电能量采集系统的阻抗建模与分析

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

In a piezoelectric energy harvesting (PEH) system, the dynamics and harvested power vary with different interface circuits connected. The impedance matching theory was regarded as the theoretical base for the harvested power optimization in the harmonically excited PEH systems. The previous literature started the impedance analyses based on the proposition that the harvested power is maximized when the output impedance of the piezoelectric transducer is matched by the input impedance of the harvesting circuit. Yet, retrospecting to the origin of the impedance matching theory, a philosophical problem is found with this proposition. Moreover, the definition, constraint, and composition of the equivalent impedance in the real (nonlinear) harvesting circuits were not clear as well. This paper clarifies these concepts and provides the impedance modeling and analysis for the PEH systems with different interface circuits, including standard energy harvesting, parallel synchronized switch harvesting on inductor, and series synchronized switch harvesting on inductor. The equivalent impedance network and corresponding mechanical schematics of a general PEH system are proposed. The difference between the PEH equivalent impedance network and the conventional impedance network is discussed. The harvested power is investigated based on this impedance analysis. The analytical results show good agreement with the experiments carried out on a base excited PEH device.
机译：在压电能量收集（PEH）系统中，动力学和收集的功率随所连接的不同接口电路而变化。阻抗匹配理论被认为是谐波激励PEH系统中收集功率优化的理论基础。以前的文献基于以下假设开始了阻抗分析：当压电换能器的输出阻抗与采集电路的输入阻抗匹配时，采集的功率将最大化。然而，回顾阻抗匹配理论的起源，关于这一命题发现了一个哲学问题。此外，在真实（非线性）采集电路中等效阻抗的定义，约束和组成也不清楚。本文阐明了这些概念，并为具有不同接口电路的PEH系统提供了阻抗建模和分析，包括标准能量收集，电感器上的并行同步开关收集以及电感器上的串联同步开关收集。提出了普通PEH系统的等效阻抗网络和相应的机械原理图。讨论了PEH等效阻抗网络与常规阻抗网络之间的区别。基于此阻抗分析来研究收集的功率。分析结果表明与在基极激励PEH器件上进行的实验吻合良好。

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