Lowering the potential barrier of a bistable energy harvester with mechanically rectified motion of an auxiliary magnet oscillator
In this study, we propose a bistable energy harvester with an auxiliary magnet oscillator (BEH-O), whose motion is mechanically rectified to enhance its broadband energy harvesting performance. The design of the proposed BEH-O system is based on local modification of the double-well potential. The a...
| Үндсэн зохиолчид: | , , , |
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| Бусад зохиолчид: | |
| Формат: | Journal Article |
| Хэл сонгох: | English |
| Хэвлэсэн: |
2018
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| Нөхцлүүд: | |
| Онлайн хандалт: | https://hdl.handle.net/10356/102951 http://hdl.handle.net/10220/47275 |
| _version_ | 1826116120634982400 |
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| author | Nguyen, Minh Sang Yoon, Yong-Jin Kwon, Ojin Kim, Pilkee |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Nguyen, Minh Sang Yoon, Yong-Jin Kwon, Ojin Kim, Pilkee |
| author_sort | Nguyen, Minh Sang |
| collection | NTU |
| description | In this study, we propose a bistable energy harvester with an auxiliary magnet oscillator (BEH-O), whose motion is mechanically rectified to enhance its broadband energy harvesting performance. The design of the proposed BEH-O system is based on local modification of the double-well potential. The auxiliary oscillator with the mechanical rectifier is designed in such a manner that its rectified half-sine motion tends to reduce the saddle barrier of restoring potential, leading to a possibility of an easier escape from the potential well, while keeping other parts of the potential, thereby maintaining high-energy orbital motion. Consequently, the lower bound of the operating frequency band of the BEH-O is reduced, when compared to its conventional counterpart, i.e., conventional bistable energy harvester (CBEH), while its upper bound remains unchanged. Such a broader frequency band of the BEH-O can be directly compared with that of the CBEH, as there is little difference in the high-energy orbital motion between the two. This beneficial effect of the BEH-O system is theoretically and experimentally supported by bifurcation analyses and frequency response analyses. |
| first_indexed | 2024-10-01T04:06:11Z |
| format | Journal Article |
| id | ntu-10356/102951 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:06:11Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/1029512023-03-04T17:17:28Z Lowering the potential barrier of a bistable energy harvester with mechanically rectified motion of an auxiliary magnet oscillator Nguyen, Minh Sang Yoon, Yong-Jin Kwon, Ojin Kim, Pilkee School of Mechanical and Aerospace Engineering Interdisciplinary Graduate School (IGS) Energy Research Institute @ NTU (ERI@N) DRNTU::Engineering::Mechanical engineering Magnetic Devices Energy Harvester In this study, we propose a bistable energy harvester with an auxiliary magnet oscillator (BEH-O), whose motion is mechanically rectified to enhance its broadband energy harvesting performance. The design of the proposed BEH-O system is based on local modification of the double-well potential. The auxiliary oscillator with the mechanical rectifier is designed in such a manner that its rectified half-sine motion tends to reduce the saddle barrier of restoring potential, leading to a possibility of an easier escape from the potential well, while keeping other parts of the potential, thereby maintaining high-energy orbital motion. Consequently, the lower bound of the operating frequency band of the BEH-O is reduced, when compared to its conventional counterpart, i.e., conventional bistable energy harvester (CBEH), while its upper bound remains unchanged. Such a broader frequency band of the BEH-O can be directly compared with that of the CBEH, as there is little difference in the high-energy orbital motion between the two. This beneficial effect of the BEH-O system is theoretically and experimentally supported by bifurcation analyses and frequency response analyses. MOE (Min. of Education, S’pore) Published version 2018-12-28T06:05:16Z 2019-12-06T21:02:39Z 2018-12-28T06:05:16Z 2019-12-06T21:02:39Z 2017 Journal Article Nguyen, M. S., Yoon, Y.-J., Kwon, O., & Kim, P. (2017). Lowering the potential barrier of a bistable energy harvester with mechanically rectified motion of an auxiliary magnet oscillator. Applied Physics Letters, 111(25), 253905-. doi:10.1063/1.4994111 0003-6951 https://hdl.handle.net/10356/102951 http://hdl.handle.net/10220/47275 10.1063/1.4994111 en Applied Physics Letters © 2017 American Institute of Physics. This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of American Institute of Physics. The published version is available at: [http://dx.doi.org/10.1063/1.4994111]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 5 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Mechanical engineering Magnetic Devices Energy Harvester Nguyen, Minh Sang Yoon, Yong-Jin Kwon, Ojin Kim, Pilkee Lowering the potential barrier of a bistable energy harvester with mechanically rectified motion of an auxiliary magnet oscillator |
| title | Lowering the potential barrier of a bistable energy harvester with mechanically rectified motion of an auxiliary magnet oscillator |
| title_full | Lowering the potential barrier of a bistable energy harvester with mechanically rectified motion of an auxiliary magnet oscillator |
| title_fullStr | Lowering the potential barrier of a bistable energy harvester with mechanically rectified motion of an auxiliary magnet oscillator |
| title_full_unstemmed | Lowering the potential barrier of a bistable energy harvester with mechanically rectified motion of an auxiliary magnet oscillator |
| title_short | Lowering the potential barrier of a bistable energy harvester with mechanically rectified motion of an auxiliary magnet oscillator |
| title_sort | lowering the potential barrier of a bistable energy harvester with mechanically rectified motion of an auxiliary magnet oscillator |
| topic | DRNTU::Engineering::Mechanical engineering Magnetic Devices Energy Harvester |
| url | https://hdl.handle.net/10356/102951 http://hdl.handle.net/10220/47275 |
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