scholarly journals A Novel Piezoelectric Energy Harvester Using the Macro Fiber Composite Cantilever with a Bicylinder in Water

2015 ◽  
Vol 5 (4) ◽  
pp. 1942-1954 ◽  
Author(s):  
Rujun Song ◽  
Xiaobiao Shan ◽  
Fengchi Lv ◽  
Jinzhe Li ◽  
Tao Xie
Keyword(s):  
Energy Harvester ◽  
Fiber Composite ◽  
Piezoelectric Energy ◽  
Macro Fiber Composite

scholarly journals Experimental Study of Macro Fiber Composite-Magnet Energy Harvester for Self-Powered Active Magnetic Bearing Rotor Vibration Sensor

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4806 ◽  
Author(s):  
Arkadiusz Mystkowski ◽  
Vytautas Ostasevicius
Keyword(s):  
Energy Harvester ◽  
Fiber Optic ◽  
Fiber Composite ◽  
Magnetic Bearing ◽  
Active Magnetic Bearing ◽  
Vibration Sensor ◽  
Fiber Optic Sensor ◽  
Rotor Vibration ◽  
Macro Fiber Composite ◽  
Self Powered

The paper presents the design, fabrication, and characterization of an energy harvester for an active magnetic bearing (AMB) rotor vibration using a macro fiber composite (MFC) with magnetic coupling. The MFC cantilevers configuration, together with neodymium magnets, is used for the contact-free rotor radial vibration self-powered sensor. The permanent magnets attached to the rotor and to the four MFC element beams ensure the mechanical energy transfer and the MFC cantilever vibration excitation. In the proposed prototype, the MFC transducer output voltage depends on the air-gap between two magnets. This paper investigates the optimum conditions to harvest as much as possible electric energy at different clearances and rotational speeds. Furthermore, to assess the rotor vibration sensitivity, the experimental results of the MFC-magnet self-powered sensor are compared with measurements obtained using a fiber optic sensor. The maximal obtained harvesting power equals 673.47 µW for the rotor speed of 3150 rpm. Moreover, the MFC cantilever was proposed as the rotor vibration sensor. The MFC-magnet self-powered vibration sensor output was compared with the fiber optic laser sensor. The mismatched vibration amplitude for both sensors does not exceed 1 µm.

scholarly journals Experimental Study and Parameter Optimization of a Magnetic Coupled Piezoelectric Energy Harvester

2018 ◽  
Vol 8 (12) ◽  
pp. 2609 ◽  
Author(s):  
Xiaobo Rui ◽  
Yibo Li ◽  
Yue Liu ◽  
Xiaolei Zheng ◽  
Zhoumo Zeng
Keyword(s):  
Flux Density ◽  
Parameter Optimization ◽  
Energy Harvester ◽  
Fiber Composite ◽  
Electrical Power ◽  
Low Frequency ◽  
Harmonic Excitation ◽  
Lumped Parameter Model ◽  
Peak Output Power ◽  
Piezoelectric Energy

Piezoelectric energy harvesting is a promising way to develop self-sufficient systems. Structural design and parameter optimization are key issues to improve the performance in applications. This paper presents a magnetic coupled piezoelectric energy harvester to increase the output and bandwidth. A lumped parameter model considering the static position is established and various modes are simulated. This paper focuses on the “Low frequency repulsion mode”, which is more practical. The experiment platform is built with the Macro Fiber Composite (MFC) material, and the results are consistent with the analytical simulation. The optimization process of some key parameters, such as magnets spacing and flux density, is carried out. The results show that there is a corresponding optimal spacing for each flux density, which is positive correlated. With the optimized parameter design, the system achieves peak electrical power of 3.28 mW under the harmonic excitation of 4 m/s2. Compared with the conventional single cantilever harvester, the operated bandwidth is increased by 66.7% and the peak output power is increased by 35.0% in experiment.

Fatigue study and durability improvement of piezoelectric single crystal macro-fiber composite energy harvester

2020 ◽  
Vol 57 (6) ◽  
pp. 645-650
Author(s):  
Jongmoon Jang ◽  
Geon-Tae Hwang ◽  
Yuho Min ◽  
Jong-Woo Kim ◽  
Cheol-Woo Ahn ◽  
...  
Keyword(s):  
Single Crystal ◽  
Energy Harvester ◽  
Fiber Composite ◽  
Macro Fiber Composite ◽  
Composite Energy

An enhanced hybrid piezoelectric–electromagnetic energy harvester using dual-mass system for vortex-induced vibrations

2021 ◽  
pp. 107754632110418
Author(s):  
Asan GA Muthalif ◽  
Muhammad Hafizh ◽  
Jamil Renno ◽  
Mohammad R Paurobally
Keyword(s):  
Bluff Body ◽  
Energy Harvester ◽  
Fiber Composite ◽  
Body Movement ◽  
Secondary Beam ◽  
Element Analysis ◽  
Mass System ◽  
Hybrid Energy ◽  
Piezoelectric Energy ◽  
Electromechanical Transduction

This article proposes a novel hybrid piezoelectric–electromagnetic vortex-induced vibration energy harvester from flow of water inside of a pipe. The piezoelectric energy harvester was modeled with a macro-fiber composite P2-type while the electromechanical transduction was modeled by an elastic magnet coupled to the bluff body movement. A dual-mass configuration was proposed to increase the energy harvesting efficiency. Theoretical models and the submerged natural frequencies of the hybrid energy harvesters were outlined. Computational fluid dynamics and finite element analysis with ANSYS were used to visualize the response in synchronization and output the voltage extracted from the harvesting mechanisms. The addition of a secondary system improves the amount of harvestable energy and outputs more energy than just a single system. This demonstrates the superiority of a dual-mass hybrid system. A tuned secondary beam was used for L-body configurations to make use of inline oscillations, and the secondary piezoelectric output improved for all configurations. Secondary beam tuning also improved the performance of the harvester by any amount between 21% and 52% when compared against a single-mass hybrid energy harvester. A comparative study showed that the L-vertical and vertical bluff-body-tuned was the best performing hybrid-PE energy harvester based on total voltage output.

Macro fiber composite-based energy harvester for human knee

2019 ◽  
Vol 115 (3) ◽  
pp. 033901 ◽  
Author(s):  
Fei Gao ◽  
Gaoyu Liu ◽  
Brendon Lik-Hang Chung ◽  
Hugo Hung-Tin Chan ◽  
Wei-Hsin Liao
Keyword(s):  
Energy Harvester ◽  
Fiber Composite ◽  
Human Knee ◽  
Macro Fiber Composite
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