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Performance of a speed bump piezoelectric energy harvester for an automatic cellphone charging system

Title
Performance of a speed bump piezoelectric energy harvester for an automatic cellphone charging system
Author
성태현
Keywords
Speed bump; Road-capable piezoelectric energy harvester; Autonomous charging cellphone; Vehicle; Actual road
Issue Date
2019-08
Publisher
ELSEVIER SCI LTD
Citation
APPLIED ENERGY, v. 247, Page. 221-227
Abstract
We propose a piezoelectric energy harvesting technology installed in a roadway speed bump. We have installed a module that can charge mobile phones utilizing a speed bump piezoelectric harvester (SBPH), which is easy to apply to roads. A highly integrated module with 40 piezo-generators was fixed and installed at the center of the speed bump. When a medium-sized vehicle passed the module at a speed of 30 km/h, an output voltage of 144 V-max, output current of 45.2 mA(max), and output power of 4086.08 mW(max) (6.81 W/m(2)) were measured at a load resistance of 2 k5-2. When the vehicle passed over the SBPH nine times, it charged a capacitor (10,000 mu F) to provide 6 V for about 200 s, and the charged electrical energy was enough to operate a cellphone. The self-controlled battery charging system via electricity generated by the piezoelectric module could be applied to a speed bump installed on an actual road.
URI
https://www.sciencedirect.com/science/article/pii/S0306261919306737?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/153625
ISSN
0306-2619; 1872-9118
DOI
10.1016/j.apenergy.2019.04.040
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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