Abstract
This paper presents a cantilever structure as energy harvester by introducing a trapezoidal cavity to increase the amplitude of the generated voltage and the overall mechanical to electrical energy conversion efficiency. An analytical model of the proposed structure is developed using Euler-Bernoulli beam theory. The effect of taper angle of the trapezoidal cavity and the neutral axis shift on the generated voltage is analyzed using analytical model and through experimentation. The generated output voltage from the energy harvester with trapezoidal cavity is compared with the beam having rectangular cavity and the beam without cavity. The generated voltage for the beam with trapezoidal cavity is 97.5% and 108% higher as compared with the beam having rectangular cavity and the beam without cavity. The characteristics of the energy harvester are evaluated through analytical model and experimentation and the results are in close agreement.
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Levron, Y., Shmilovitz, D., and Martínez-Salamero, L., “A Power Management Strategy for Minimization of Energy Storage Reservoirs in Wireless Systems with Energy Harvesting,” IEEE Transactions on Circuits and Systems I: Regular Papers, Vol. 58, No. 3, pp. 633–643, 2011.
Ferrari, M., Ferrari, V., Guizzetti, M., and Marioli, D., “An Autonomous Battery-Less Sensor Module Powered by Piezoelectric Energy Harvesting with RF Transmission of Multiple Measurement Signals,” Smart Materials and Structures, Vol. 18, No. 8, Paper No. 085023, 2009.
Barker, S., Brennan, D., Wright, N. G., and Horsfall, A. B., “Piezoelectric-Powered Wireless Sensor System with Regenerative Transmit Mode,” IET Wireless Sensor Systems, Vol. 1, No. 1, pp. 31–38, 2011.
Sodano, H. A., Inman, D. J., and Park, G., “A Review of Power Harvesting from Vibration using Piezoelectric Materials,” Shock and Vibration Digest, Vol. 36, No. 3, pp. 197–206, 2004.
Priya, S., “Advances in Energy Harvesting using Low Profile Piezoelectric Transducers,” Journal of Electroceramics, Vol. 19, No. 1, pp. 167–184, 2007.
Junior, C. D. M., Erturk, A., and Inman, D. J., “An Electromechanical Finite Element Model for Piezoelectric Energy Harvester Plates,” Journal of Sound and Vibration, Vol. 327, No. 1, pp. 9–25, 2009.
Chen, X. R., Yang, T. Q., Wang, W., and Yao, X., “Vibration Energy Harvesting with a Clamped Piezoelectric Circular Diaphragm,” Ceramics International, Vol. 38, pp. S271–S274, 2012.
Kim, N. L., Jeong, S. S., Cheon, S. K., Park, T. G., and Kim, M. H., “Generating Characteristics of Hollow-Plate-Type Piezoelectric Energy Harvesters,” Journal of the Korean Physical Society, Vol. 63, No. 12, pp. 2310–2313, 2013.
Li, W. G., He, S., and Yu, S., “Improving Power Density of a Cantilever Piezoelectric Power Harvester through a Curved LShaped Proof Mass,” IEEE Transactions on Industrial Electronics, Vol. 57, No. 3, pp. 868–876, 2010.
Guan, Q. C., Ju, B., Xu, J. W., Liu, Y. B., and Feng, Z. H., “Improved Strain Distribution of cantilever Piezoelectric Energy Harvesting Devices using H-Shaped Proof Masses,” Journal of Intelligent Material Systems and Structures, Vol. 24, No. 9, pp. 1059–1066, 2013.
Abdelkefi, A., Najar, F., Nayfeh, A., and Ayed, S. B., “An Energy Harvester using Piezoelectric Cantilever Beams Undergoing Coupled Bending-Torsion Vibrations,” Smart Materials and Structures, Vol. 20, No. 11, Paper No. 115007, 2011.
Abdelkefi, A., Nayfeh, A., Hajj, M., and Najar, F., “Energy Harvesting from a Multifrequency Response of a Tuned Bending-Torsion System,” Smart Materials and Structures, Vol. 21, No. 7, Paper No. 075029, 2012.
Mehraeen, S., Jagannathan, S., and Corzine, K. A., “Energy Harvesting from Vibration with Alternate Scavenging Circuitry and Tapered Cantilever Beam,” IEEE Transactions on Industrial Electronics, Vol. 57, No. 3, pp. 820–830, 2010.
Paquin, S. and St-Amant, Y., “Improving the Performance of a Piezoelectric Energy Harvester using a Variable Thickness Beam,” Smart Materials and Structures, Vol. 19, No. 10, Paper No. 105020, 2010.
Benasciutti, D., Moro, L., Zelenika, S., and Brusa, E., “Vibration Energy Scavenging Via Piezoelectric Bimorphs of Optimized Shapes,” Microsystem Technologies, Vol. 16, No. 5, pp. 657–668, 2010.
Ayed, S. B., Abdelkefi, A., Najar, F., and Hajj, M. R., “Design and Performance of Variable-Shaped Piezoelectric Energy Harvesters,” Journal of Intelligent Material Systems and Structures, Vol. 25, No. 2, pp. 174–186, 2014.
Xu, J. W., Liu, Y. B., Shao, W. W., and Feng, Z., “Optimization of a Right-Angle Piezoelectric Cantilever using Auxiliary Beams with Different Stiffness Levels for Vibration Energy Harvesting,” Smart Materials and Structures, Vol. 21, No. 6, Paper No. 065017, 2012.
Wang, Z. and Xu, Y., “Vibration Energy Harvesting Device based on Air-Spaced Piezoelectric Cantilevers,” Applied Physics Letters, Vol. 90, No. 26, Paper No. 263512, 2007.
Zheng, Q. and Xu, Y., “Asymmetric Air-Spaced Cantilevers for Vibration Energy Harvesting,” Smart Materials and Structures, Vol. 17, No. 5, Paper No. 055009, 2008.
Liao, Y. and Sodano, H. A., “Optimal Placement of Piezoelectric Material on a Cantilever Beam for Maximum Piezoelectric Damping and Power Harvesting Efficiency,” Smart Materials and Structures, Vol. 21, No. 10, Paper No. 105014, 2012.
Abdelkefi, A. and Barsallo, N., “Comparative Modeling of Low-Frequency Piezomagnetoelastic Energy Harvesters,” Journal of Intelligent Material Systems and Structures, Vol. 25, No. 14, pp. 1771–1785, 2014.
Wang, Q. and Wu, N., “Optimal Design of a Piezoelectric Coupled Beam for Power Harvesting,” Smart Materials and Structures, Vol. 21, No. 8, Paper No. 085013, 2012.
Salehi-Khojin, A., Bashash, S., and Jalili, N., “Modeling and Experimental Vibration Analysis of Nanomechanical Cantilever Active Probes,” Journal of Micromechanics and Microengineering, Vol. 18, No. 8, Paper No. 085008, 2008.
Park, J., Lee, S., and Kwak, B. M., “Design Optimization of Piezoelectric Energy Harvester Subject to Tip Excitation,” Journal of Mechanical Science and Technology, Vol. 26, No. 1, pp. 137–143, 2012.
Dosch, J. J., Inman, D. J., and Garcia, E., “A Self-Sensing Piezoelectric Actuator for Collocated Control,” Journal of Intelligent Material Systems and Structures, Vol. 3, No. 1, pp. 166–185, 1992.
Challa, V. R., Prasad, M., and Fisher, F. T., “Towards an Autonomous Self-Tuning Vibration Energy Harvesting Device for Wireless Sensor Network Applications,” Smart Materials and Structures, Vol. 20, No. 2, Paper No. 025004, 2011.
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Reddy, A.R., Umapathy, M., Ezhilarasi, D. et al. Cantilever beam with trapezoidal cavity for improved energy harvesting. Int. J. Precis. Eng. Manuf. 16, 1875–1881 (2015). https://doi.org/10.1007/s12541-015-0244-5
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DOI: https://doi.org/10.1007/s12541-015-0244-5