Design of a Weighted-Rotor Energy Harvester Based on Dynamic Analysis and Optimization of Circular Halbach Array Magnetic Disk
This paper proposes the design of a weighted-rotor energy harvester (WREH) in which the oscillation is caused by the periodic change of the tangential component of gravity, to harvest kinetic energy from a rotating wheel. When a WREH is designed with a suitable characteristic length, the rotor’s nat...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2015-03-01
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| Series: | Micromachines |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2072-666X/6/3/375 |
| _version_ | 1819175441724866560 |
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| author | Yu-Jen Wang Yu-Ti Hao Hao-Yu Lin |
| author_facet | Yu-Jen Wang Yu-Ti Hao Hao-Yu Lin |
| author_sort | Yu-Jen Wang |
| collection | DOAJ |
| description | This paper proposes the design of a weighted-rotor energy harvester (WREH) in which the oscillation is caused by the periodic change of the tangential component of gravity, to harvest kinetic energy from a rotating wheel. When a WREH is designed with a suitable characteristic length, the rotor’s natural frequency changes according to the wheel rotation speed and the rotor oscillates at a wide angle and high angular velocity to generate a large amount of power. The magnetic disk is designed according to an optimized circular Halbach array. The optimized circular Halbach array magnetic disk provides the largest induced EMF for different sector-angle ratios for the same magnetic disk volume. This study examined the output voltage and power by considering the constant and accelerating plate-rotation speeds, respectively. This paper discusses the effects of the angular acceleration speed of a rotating wheel corresponding to the dynamic behaviors of a weighted rotor. The average output power is 399 to 535 microwatts at plate-rotation speeds from 300 to 500 rpm, enabling the WREH to be a suitable power source for a tire-pressure monitoring system. |
| first_indexed | 2024-12-22T20:54:55Z |
| format | Article |
| id | doaj.art-317713e0ca014dac8e14ee2249116b59 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-12-22T20:54:55Z |
| publishDate | 2015-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-317713e0ca014dac8e14ee2249116b592022-12-21T18:12:58ZengMDPI AGMicromachines2072-666X2015-03-016337538910.3390/mi6030375mi6030375Design of a Weighted-Rotor Energy Harvester Based on Dynamic Analysis and Optimization of Circular Halbach Array Magnetic DiskYu-Jen Wang0Yu-Ti Hao1Hao-Yu Lin2Department of Mechanical and Electromechanical Engineering, National Sun Yat-sen University, No. 70 Lienhai Rd., Kaohsiung 80424, TaiwanNuvoton Technology Corporation, No. 4, Creation Rd., Hsinchu Science Park 30077, TaiwanDepartment of Mechanical Engineering, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, TaiwanThis paper proposes the design of a weighted-rotor energy harvester (WREH) in which the oscillation is caused by the periodic change of the tangential component of gravity, to harvest kinetic energy from a rotating wheel. When a WREH is designed with a suitable characteristic length, the rotor’s natural frequency changes according to the wheel rotation speed and the rotor oscillates at a wide angle and high angular velocity to generate a large amount of power. The magnetic disk is designed according to an optimized circular Halbach array. The optimized circular Halbach array magnetic disk provides the largest induced EMF for different sector-angle ratios for the same magnetic disk volume. This study examined the output voltage and power by considering the constant and accelerating plate-rotation speeds, respectively. This paper discusses the effects of the angular acceleration speed of a rotating wheel corresponding to the dynamic behaviors of a weighted rotor. The average output power is 399 to 535 microwatts at plate-rotation speeds from 300 to 500 rpm, enabling the WREH to be a suitable power source for a tire-pressure monitoring system.http://www.mdpi.com/2072-666X/6/3/375weighted-rotor energy harvesternatural frequencyoptimization of Halbach arraytire-pressure monitoring system |
| spellingShingle | Yu-Jen Wang Yu-Ti Hao Hao-Yu Lin Design of a Weighted-Rotor Energy Harvester Based on Dynamic Analysis and Optimization of Circular Halbach Array Magnetic Disk Micromachines weighted-rotor energy harvester natural frequency optimization of Halbach array tire-pressure monitoring system |
| title | Design of a Weighted-Rotor Energy Harvester Based on Dynamic Analysis and Optimization of Circular Halbach Array Magnetic Disk |
| title_full | Design of a Weighted-Rotor Energy Harvester Based on Dynamic Analysis and Optimization of Circular Halbach Array Magnetic Disk |
| title_fullStr | Design of a Weighted-Rotor Energy Harvester Based on Dynamic Analysis and Optimization of Circular Halbach Array Magnetic Disk |
| title_full_unstemmed | Design of a Weighted-Rotor Energy Harvester Based on Dynamic Analysis and Optimization of Circular Halbach Array Magnetic Disk |
| title_short | Design of a Weighted-Rotor Energy Harvester Based on Dynamic Analysis and Optimization of Circular Halbach Array Magnetic Disk |
| title_sort | design of a weighted rotor energy harvester based on dynamic analysis and optimization of circular halbach array magnetic disk |
| topic | weighted-rotor energy harvester natural frequency optimization of Halbach array tire-pressure monitoring system |
| url | http://www.mdpi.com/2072-666X/6/3/375 |
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