Piezoelectric energy harvester featuring a magnetic chaotic pendulum

Chen，Jiatong1; Bao，Bin1,2; Liu，Jinlong1; Wu，Yufei2; Wang，Quan1,3

2022-10-01

10.1016/j.enconman.2022.116155

ENERGY CONVERSION AND MANAGEMENT   Impact Factor & Quartile

0196-8904

1879-2227

Chaos is usually accompanied by broadband properties of nonlinear energy conversion. To investigate the effects and potential of chaotic vibration in enhancing energy harvesting technologies, this study presents a piezoelectric wind energy harvester with a magnetic chaotic pendulum. The proposed structure is mainly composed of a piezoelectric clamped-clamped beam and a magnetic chaotic pendulum attached to a radial wind turbine. A chaotic pendulum is a double pendulum consisting of two pendula that swing freely in the vertical plane and are connected by a pin joint. The magnet is fixed at the end of the second pendula. When the chaotic pendulum rotates with the wind turbine, the magnetic interaction between the magnet of the second pendula and the magnet in the middle of the clamped-clamped piezoelectric beam produces chaotic beam vibration for nonlinear energy harvesting. Since the energy harvesting system of the proposed structure is chaotic, particle swarm optimization combined with a neural network was adopted to optimize the output power of the proposed structure. The results showed that the proposed structure automatically adapts to the natural wind environment. The working flow velocity range can be increased compared to that of an energy harvester with a traditional single pendulum. An experimental maximum output power of 1.25 mW can be achieved at 557.31 rpm in the investigated flow velocity range.

Chaotic pendulum Neural network Nonlinear magnetic interaction Particle swarm optimization Piezoelectric Wind energy harvesting

SCI ; EI

English

First ; Corresponding

Thermodynamics ; Energy & Fuels ; Mechanics

Thermodynamics ; Energy & Fuels ; Mechanics

WOS:000859531100003

PERGAMON-ELSEVIER SCIENCE LTD

20223612689667

Energy harvesting ; Magnetism ; Magnets ; Particle swarm optimization (PSO) ; Pendulums ; Piezoelectricity ; Wind power ; Wind turbines

Energy Conversion Issues:525.5 ; Wind Power (Before 1993, use code 611 ):615.8 ; Fluid Flow:631 ; Electricity: Basic Concepts and Phenomena:701.1 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Computer Software, Data Handling and Applications:723 ; Optimization Techniques:921.5 ; Mechanical Variables Measurements:943.2

ENGINEERING

2-s2.0-85137119971

Scopus

1.Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering,Shenzhen University,Shenzhen,518060,China
3.Department of Civil and Environmental Engineering,Shantou University,Shantou,515063,China

Chen，Jiatong,Bao，Bin,Liu，Jinlong,et al. Piezoelectric energy harvester featuring a magnetic chaotic pendulum[J]. ENERGY CONVERSION AND MANAGEMENT,2022,269.

Chen，Jiatong,Bao，Bin,Liu，Jinlong,Wu，Yufei,&Wang，Quan.(2022).Piezoelectric energy harvester featuring a magnetic chaotic pendulum.ENERGY CONVERSION AND MANAGEMENT,269.

Chen，Jiatong,et al."Piezoelectric energy harvester featuring a magnetic chaotic pendulum".ENERGY CONVERSION AND MANAGEMENT 269(2022).