The Effect of Axial Displacement of Magnets in Piezoelectric Energy Harvester

  • Authors

    • Li Wah Thong
    • Yu Jing Bong
    • Swee Leong Kok
    • Roszaidi Ramlan
    2018-07-04
    https://doi.org/10.14419/ijet.v7i3.7.16221
  • Energy Harvesting, Nonlinear Dynamics, Vibration, Piezoelectric, Repulsive Magnetic Force

  • The utilization of vibration energy harvesters as a substitute to batteries in wireless sensors has shown prominent interest in the literature. Various approaches have been adapted in the energy harvesters to competently harvest vibrational energy over a wider spectrum of frequencies with optimize power output.   A typical bistable piezoelectric energy harvester, where the influence of magnetic field is induced into a linear piezoelectric cantilever, is designed and analyzed in this paper. The exploitations of the magnetic force specifically creates nonlinear response and bistability in the energy harvester that extends the operational frequency spectrum for optimize performance.  Further analysis on the effects of axial spacing displacement between two repulsive magnets of the harvester, in terms of x-axis (horizontal) and z-axis (vertical) on its natural resonant frequency and performance based on the frequency response curve are investigated for realizing optimal power output. Experimental results show that by selecting the optimal axial spacing displacement, the vibration energy harvester can be designed to produce maximized output power in an improved broadband of frequency spectrum.

     

     

  • References

    1. [1] Spreemann, D., et al., Electromagnetic vibration energy harvesting devices: Architectures, design, modeling and optimization. Springer Science & Business Media, 2012.

      [2] Elvin, N., et al., Advances in energy harvesting methods. Springer Science & Business Media, 2013.

      [3] Mohammadi, S., et al., Magnetostrictive vibration energy harvesting using strain energy method. Energy 2015. 81: p. 519–525.

      [4] Caliò, R., et al., Piezoelectric energy harvesting solutions. Sensors, 2014. 14(3): p. 4755-4790.

      [5] Tang, L., et al., Toward Broadband Vibration-based Energy Harvesting. Journal of Intelligent Material Systems and Structures, 2010. 21(18): p. 1867–1897.

      [6] Thong, L.W., et al., A broadband vibration energy harvesting model for multiple cantilever beams. International Conference on Electronics, Information and Communications, 2014: p. 1-3.

      [7] Lin, Z., et al., Enhanced Broadband Vibration Energy Harvesting Using a Multimodal Nonlinear Magnetoelectric Converter. Journal of Electronic Materials, 2016. 45(7): p.3554-3561.

      [8] Cheng, Y., et al., An efficient piezoelectric energy harvester with frequency self-tuning. Journal of Sound and Vibration, 2017. 396: pp. 69-82.

      [9] Pellegrini, S.P., et al., Bistable vibration energy harvesters: A review. Journal of Intelligent Material Systems and Structures, 2012. 24(11): p. 1303–1312.

      [10] Harne, R.L., et al., A review of the recent research on vibration energy harvesting via bistable systems. Smart Materials and Structures, 2013. 22: p. 23001.

      [11] Mann, B.P., et al., Investigations of a nonlinear energy harvester with a bistable potential well. Journal of Sound and Vibration, 2010. 329(9): p. 1215–1226.

      [12] Karami, M.A., et al., Equivalent damping and frequency change for linear and nonlinear hybrid vibrational energy harvesting systems. Journal of Sound and Vibration, 2011. 330(23): p. 5583 – 5597.

      [13] Tang, L., et al., A nonlinear piezoelectric energy harvester with magnetic oscillator. Applied Physics Letters, 2012. 101(9): p. 094102.

      [14] Abdelkefi, A., et al., Nonlinear analysis and power improvement of broadband low-frequency piezomagnetoelastic energy harvesters. Nonlinear Dynamics, 2016. 83(1-2): p. 41-56.

  • Downloads

  • How to Cite

    Wah Thong, L., Jing Bong, Y., Leong Kok, S., & Ramlan, R. (2018). The Effect of Axial Displacement of Magnets in Piezoelectric Energy Harvester. International Journal of Engineering & Technology, 7(3.7), 95-99. https://doi.org/10.14419/ijet.v7i3.7.16221