A high-efficiency multidirectional wind energy harvester based on impact effect for self-powered wireless sensors in the grid

2019 ◽  
Vol 28 (11) ◽  
pp. 115022 ◽  
Author(s):  
Minfeng Tang ◽  
Qihui Guan ◽  
Xiaoping Wu ◽  
Xiaohui Zeng ◽  
Zutao Zhang ◽  
...  
Keyword(s):  
Wind Energy ◽  
Wireless Sensors ◽  
Energy Harvester ◽  
High Efficiency ◽  
Impact Effect ◽  
Self Powered

scholarly journals Dual-Structured Flexible Piezoelectric Film Energy Harvesters for Effectively Integrated Performance

Sensors ◽  
2019 ◽  
Vol 19 (6) ◽  
pp. 1444 ◽  
Author(s):  
Jae Han ◽  
Kwi-Il Park ◽  
Chang Jeong
Keyword(s):  
Energy Harvesting ◽  
Energy Harvester ◽  
High Efficiency ◽  
Piezoelectric Film ◽  
Efficient Technology ◽  
Element Analysis ◽  
Energy Harvesters ◽  
Self Powered ◽  
Lift Off ◽  
Integrated Performance

Improvement of energy harvesting performance from flexible thin film-based energy harvesters is essential to accomplish future self-powered electronics and sensor systems. In particular, the integration of harvesting signals should be established as a single device configuration without complicated device connections or expensive methodologies. In this research, we study the dual-film structures of the flexible PZT film energy harvester experimentally and theoretically to propose an effective principle for integrating energy harvesting signals. Laser lift-off (LLO) processes are used for fabrication because this is known as the most efficient technology for flexible high-performance energy harvesters. We develop two different device structures using the multistep LLO: a stacked structure and a double-faced (bimorph) structure. Although both structures are well demonstrated without serious material degradation, the stacked structure is not efficient for energy harvesting due to the ineffectively applied strain to the piezoelectric film in bending. This phenomenon stems from differences in position of mechanical neutral planes, which is investigated by finite element analysis and calculation. Finally, effectively integrated performance is achieved by a bimorph dual-film-structured flexible energy harvester. Our study will foster the development of various structures in flexible energy harvesters towards self-powered sensor applications with high efficiency.

A Rotational Wind Energy Harvester and Self-Powered Portable Weather Station

2021 ◽  
Author(s):  
Kumar Shrestha ◽  
Pukar Maharjan ◽  
Trilochan Bhatta ◽  
Sudeep Sharma ◽  
Sang Hyun Lee ◽  
...  
Keyword(s):  
Wind Energy ◽  
Energy Harvester ◽  
Weather Station ◽  
Self Powered

Segmented wind energy harvester based on contact-electrification and as a self-powered flow rate sensor

2016 ◽  
Vol 653 ◽  
pp. 96-100 ◽  
Author(s):  
Yuanjie Su ◽  
Guangzhong Xie ◽  
Fabiao Xie ◽  
Tao Xie ◽  
Qiuping Zhang ◽  
...  
Keyword(s):  
Wind Energy ◽  
Flow Rate ◽  
Energy Harvester ◽  
Contact Electrification ◽  
Self Powered ◽  
Rate Sensor

Wind energy harvester based on coaxial rotatory freestanding triboelectric nanogenerators for self-powered water splitting

Nano Energy ◽  
2018 ◽  
Vol 50 ◽  
pp. 562-570 ◽  
Author(s):  
Xiaohu Ren ◽  
Huiqing Fan ◽  
Chao Wang ◽  
Jiangwei Ma ◽  
Hua Li ◽  
...  
Keyword(s):  
Wind Energy ◽  
Water Splitting ◽  
Energy Harvester ◽  
Self Powered ◽  
Triboelectric Nanogenerators

scholarly journals Harvesting Vibration Energy and Wind Energy by a Bi-stable Harvester: Modeling and Experiments

2021 ◽  
Author(s):  
Haitao Li ◽  
Bojian Dong ◽  
Fan Cao ◽  
Weiyang Qin ◽  
Hu Ding ◽  
...  
Keyword(s):  
Wind Energy ◽  
Energy Harvester ◽  
High Efficiency ◽  
Random Excitation ◽  
Vibration Energy ◽  
Total Output ◽  
Nonlinear Dynamical ◽  
Modeling And Experiments ◽  
Harvesting Efficiency ◽  
Bistable Energy Harvester

Abstract In realistic environments, there often appears the concurrence of base excitation and blowing wind. Harvesting both vibration energy and wind energy by an unique harvester is attractive. In this paper, we proposed a harvester integrating bi-stability and galloping to realize this aim. The nonlinear dynamical model of the bistable energy harvester under concurrent wind and base excitations is established. The galloping effects on the responses are explored based on the established model, for both harmonic and random excitations. The corresponding experiments are conducted to validate the theoretical prediction. The experimental results are consistent with the simulation results. At a wind speed of U=2 m/s, the bandwidth of large-amplitude inter-well motion of the bi-stable energy harvester is extended by about 18.5%. The critical random excitation level for snap-through is reduced by 58% and the total output voltage at random excitation is increased by 53.4%. Thus, the harvester could scavenge the wind and vibration energies at a high efficiency. These conclusions could be helpful for improving the harvesting efficiency in the real environment.

Omnidirectional Wind Energy Harvester for Self-Powered Agro-Environmental Information Sensing

Nano Energy ◽  
2021 ◽  
pp. 106686
Author(s):  
Shufen Dai ◽  
Xunjia Li ◽  
Chengmei Jiang ◽  
Qi Zhang ◽  
Bo Peng ◽  
...  
Keyword(s):  
Wind Energy ◽  
Energy Harvester ◽  
Environmental Information ◽  
Self Powered
Sign in / Sign up

Export Citation Format

Share Document