A Dimensionless Parameter Analysis of a Cylindrical Tube Electromagnetic Vibration Energy Harvester and Its Oscillator Nonlinearity Effect

Zhenwei Liu, Xu Wang, Ran Zhang and Liuping Wang
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Zhenwei Liu: School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, 124 La Trobe St., Melbourne, VIC 3000, Australia
Xu Wang: School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, 124 La Trobe St., Melbourne, VIC 3000, Australia
Ran Zhang: School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, 124 La Trobe St., Melbourne, VIC 3000, Australia
Liuping Wang: School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, 124 La Trobe St., Melbourne, VIC 3000, Australia

Energies, 2018, vol. 11, issue 7, 1-21

Abstract: This paper investigates a single degree of freedom oscillator in a cylindrical tube vibration energy harvester which is applicable in a low-frequency range. A duffing-type nonlinear dynamic differential equation of the oscillator was developed for the nonlinear analysis and solved by using the harmonic balance method in order to widen energy harvesting frequency bandwidth. The exploitation of nonlinear spring force interactions of the oscillator to enhance the generator’s performance is also presented in this paper. The dimensionless harvested power formula of the nonlinear mass-spring-damper system was derived, and a parameter study was conducted for the design optimization of the harvester. The main contribution of this paper is to establish a dimensionless performance analysis method of a nonlinear electromagnetic vibration energy harvester system and to disclose the effects of the parameters and nonlinearity of the system on the harvesting performance.

Keywords: dimensionless analysis; nonlinear parameters; electromagnetic; vibration energy harvester; Monte Carlo simulation; sensitivity analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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