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| A New Electromagnetic Vibration-Powered Generator and Its Model and Experiment Research |
| Yang Xiaoguang, Wang Youhua, Zhang Bo, Cao Yingying |
| Hebei University of Technology Tianjin 300130 China |
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Abstract This paper presents a new electromagnetic vibration-powered generator with a double-ends fixed annular permanent magnet spring. The wires are winded both inside and outside of the annular permanent magnet to form inner coil and outer coil, respectively. The input-output mathematical model of axial magnetization annular permanent magnet spring is built. Taking advantage of the model, the characteristic curve of the magnetic force versus the displacement of the movable magnet is obtained. The magnetic field distribution of the designed generator and the output voltage waveforms of the outer coil and inner coil are simulated by using finite element method (FEM). The simulated result of the magnetic force characteristic curve agrees with the analytical result obtained from the mathematical model. The natural frequency is calculated based on the magnetic force characteristic curve. The tested result of natural frequency of the magnet spring agrees with the calculated result. Tests results of the output voltage waveforms have good agreement with the simulation results. The maximum output power of the designed vibration-powered generator is 28.3 mW, and the open circuit RMS voltage is 5.1 V with the vibration frequency of 20 Hz and the amplitude of 5 mm.
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Received: 02 November 2011
Published: 27 November 2013
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[1] Li H, Pillay P. A linear generator powered from bridge vibrations for wireless sensors[C]. Proceedings of the IEEE Industry Applications Society Annual Meeting, New Orleans, 2007: 523-529.
[2] Asada G, Dong M, Lin T S, et al. Wireless integrated network sensors: low power systems on a chip[C]. Proceedings of the 24th European Solid-State Circuits Conference, Hague, 1998: 9-16.
[3] Kulah H Najafi K. Energy scavenging from low- frequency vibrations by using frequency up-conversion for wireless sensor applications [J]. IEEE Sensors Journal, 2008, 8(3): 261-268.
[4] Saadon S Sidek O. Ambient vibration-based MEMS piezoelectric energy harvester for green energy source[C]. Proceedings of the 4th International Conference on Modeling, Simulation and Applied Optimization, Kuala Lumpur, 2011: 1-6.
[5] Sidek O, Khalid M A, Ishak M Z, et al. Design and simulation of soi-mems electrostatic vibration energy harvester for micro power generator[C]. Proceedings of the 1st International Conference on Electrical, Control and Computer Engineering, Kuantan, Pahang, 2011: 207-212.
[6] Greiner A, Smith P J, Korvink J G. A low-cost electromagnetic generator for vibration energy harvesting[J]. IEEE Sensors Journal, 2009, 11(1): 107-113.
[7] Park J C, Bang D H, Park J Y. Micro-fabricated electromagnetic power generator to scavenge low ambient vibration[J]. IEEE Transactions on Magnetics, 2010, 46(6):1937-1942.
[8] Wang Z, Wang B, Zhang H, et al. Model and experimental study of permanent magnet vibration- to-electrical power generator[J]. IEEE Transactions on Applied Superconductivity, 2010, 20(3): 1110-1113.
[9] Sala C R, O’Donnell T, Wang N, et al. McCloskey. Electromagnetic generator for harvesting energy from human motion[J]. Sensors and Actuators A, 2008, 147(1):248-253.
[10] 田录林, 李言, 田琦, 等. 轴向磁化的双环永磁轴承轴向磁力研究[J]. 中国电机工程学报, 2007, 37(36): 41-45.
Tian Lulin, Li Yan, Tian Qi, et al. Research on the axial magnetic force of axially magnetized bi-annular-shaped permanent magnetic bearings[J] Proceedings of the CSEE, 2007, 37(36): 41-45. |
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2013, Vol. 28 
