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作者:

Chen, Lihua (Chen, Lihua.) | Ma, Yuxuan (Ma, Yuxuan.) | Hou, Chaoran (Hou, Chaoran.) | Su, Xinlin (Su, Xinlin.) | Li, Haoqun (Li, Haoqun.)

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EI Scopus SCIE

摘要:

Based on the cantilever beam, this paper proposes and designs a novel electret-based electrostatic energy harvester (e-EEH) with dual modules: module I is a capacitor of nonparallel plate electrodes; module II is a multi-electrode array capacitor. Two stoppers are presented in concern with reliability by limiting the motion of proof mass to prevent capacitor breakdown and pull-in. Meanwhile the stoppers serve as a functional element to realize broadband harvesting. Considering the bending of the cantilever beam, the expression of the module I capacitance is analytically derived as a function of the deflection. Conformal transformation is applied to obtain the expression of the module II capacitance, simultaneously considering the change of distance and overlap area between movable and fixed electrodes. According to Hamilton's principle and Kirchhoff's circuit law, the electromechanical coupling nonlinear dynamics equations of the proposed energy harvesters are established. The output performance of the energy harvester is obtained and analyzed by numerical calculation. The results show that the double-model electrostatic energy harvester can output high power in low- frequency broadband.(c) 2022 Published by Elsevier Inc.

关键词:

Stopper Dual modules Electrostatic energy harvester (EEH) Cantilever beam Capacitance calculation

作者机构:

  • [ 1 ] [Chen, Lihua]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 2 ] [Ma, Yuxuan]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 3 ] [Hou, Chaoran]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 4 ] [Su, Xinlin]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 5 ] [Li, Haoqun]Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
  • [ 6 ] [Chen, Lihua]Beijing Univ Technol, 100 Pingleyuan, Beijing 100124, Peoples R China

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来源 :

APPLIED MATHEMATICAL MODELLING

ISSN: 0307-904X

年份: 2022

卷: 116

页码: 350-371

5 . 0

JCR@2022

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JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:49

JCR分区:1

中科院分区:1

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