Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Smart Structures and Systems Volume 32, Number 6, December 2023 , pages 383-391 DOI: https://doi.org/10.12989/sss.2024.32.6.383 |
|
|
|
Broadband energy harvester for varied tram vibration frequency using 2-DOF mass-spring-damper system |
||
Hamza Umar, Christopher Mullen, Soobum Lee, Jaeyun Lee and Jaehoon Kim
|
||
| Abstract | ||
| Energy harvesting in trams may become a prevalent source of passive energy generation due to the high density of vibrational energy, and this may help power structural health monitoring systems for the trams. This paper presents a broadband vibrational energy harvesting device design that utilizes a varied frequency from a tram vehicle using a 2 DOF vibrational system combined with electromagnetic energy conversion. This paper will demonstrate stepwise optimization processes to determine mechanical parameters for frequency tuning to adjust to the trams' operational conditions, and electromagnetic parameters for the whole system design to maximize power output. The initial optimization will determine 5 important design parameters in a 2 DOF vibrational system, namely the masses (m1, m2 (and spring constants (k1, k2, k3). The second step will use these parameters as initial guesses for the second optimization which will maintain the ratios of these parameters and present electrical parameters to maximize the power output from this system. The obtained values indicated a successful demonstration of design optimization as the average power generated increased from 1.475 mW to 17.44 mW (around 12 times). | ||
| Key Words | ||
| 2-DOF vibration system; broadband energy harvesting; design optimization; electromagnetic; tram vibration | ||
| Address | ||
| (!) Hamza Umar, Christopher Mullen, Soobum Lee: Department of Mechanical Engineering, University of Maryland Baltimore County, 21250 Hilltop circle, Baltimore, MD 21250, USA; (2) Jaeyun Lee: CORECHIPS Co., Ltd., 33, Omokcheon-ro 132beon-gil, Gwonseon-gu, Suwon-si, Gyeonggi-do, Republic of Korea, Republic of Korea; (3) Jaehoon Kim: Korea Railroad Research Institute, 176, Cheoldobangmulgwan-ro, Uiwang-si, Gyeonggi-do, Republic of Korea. | ||