Dynamic Response of a Pendulum-Driven Energy Harvester in the Presence of Noise

13th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Borowiec, M.^1 ; Litak, G.^1 ; Rysak, A.^1 ; Mitcheson, P.D.^2 ; Toh, T.T.^2

Lublin University of Technology, Nadbystrzycka 36, 20-618 Lublin, Poland^1

Department of Electrical and Electronic Engineering, Imperial College London, London SW7 2AZ, United Kingdom^2

关键词: Energy harvesting systems;    Output characteristics;    Random excitations;    Resonant frequency tuning;    Standard deviation;    Time- and frequency-domain analysis;    Wave energy harvesters;    Wave energy harvesting;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/476/1/012038/pdf
DOI  :  10.1088/1742-6596/476/1/012038

来源: IOP

【 摘 要 】

This paper presents time- and frequency-domain analyses of a previously reported wave energy harvesting system in the presence of noise. The energy harvester comprises a pendulum that drives two DC generators connected electrically in series. A mechanical model of the wave energy harvester is developed and simulated in Matlab. The output voltage and output power of the energy harvester is evaluated and compared for two input signal types: a deterministic case and a stochastic case. The latter consists of a white noise random excitation source that is bounded in amplitude at a fixed standard deviation. Simulation results indicate that a stochastic input signal shows considerable influence on the output characteristics of the energy harvester. The simulation models developed in this paper can be used to complement the design of resonant frequency tuning electronics for energy harvesting systems.