Improving Power Density of Piezoelectric Vibration-Based Energy Scavengers

Subject Areas : Engineering

R Hosseini ¹ , O Zargar ² , M Hamedi ³

1 - Young Researchers and Elite Club, South Tehran Branch, Islamic Azad University, Tehran, Iran
2 - School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran
3 - Department of Mechanical Engineering, Faculty of Engineering, University of Tehran, Iran

Received: 2017-09-27 Accepted : 2017-12-14 Published : 2018-03-01

Keywords: Design optimization, Natural frequency, Piezoelectric, Vibration energy harvesting, Power scavenger,

Abstract :

Vibration energy harvesting with piezoelectric materials currently generate up to 300 microwatts per cm2, using it to be mooted as an appropriate method of energy harvesting for powering low-power electronics. One of the important problems in bimorph piezoelectric energy harvesting is the generation of the highest power with the lowest weight. In this paper the effect of the shape and geometry of a bimorph piezoelectric cantilever beam harvester on the electromechanical efficiency of the system is studied. An analytic model has been presented using Rayleigh cantilever beam approximations for piezoelectric harvesters with tapered bimorph piezoelectric cantilever beam. In order to study the effect of a cantilever beam length and geometry on the generated voltage, finite element simulation has been performed using ABAQUS. Design optimization has been used to obtain the maximum output power and tapered beams are observed to lead to more uniform distribution of strain in the piezoelectric layer, thus increasing efficiency.

References:

[1] Beeby S.P., Tudor M.J., White N., 2006, Energy harvesting vibration sources for microsystems applications, Measurement Science and Technology 17: R175.
[2] Erturk A., Inman D.J., 2011, Piezoelectric Energy Harvesting, John Wiley & Sons.
[3] Jagtap S.N., Paily R., 2011, Geometry optimization of a MEMS-based energy harvesting device, Students' Technology Symposium (TechSym) 2011: 265-269.
[4] Patel R., McWilliam S., Popov A.A., 2011, A geometric parameter study of piezoelectric coverage on a rectangular cantilever energy harvester, Smart Materials and Structures 20: 085004.
[5] Zhu M., Worthington E., Tiwari A., 2010, Design study of piezoelectric energy-harvesting devices for generation of higher electrical power using a coupled piezoelectric-circuit finite element method, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 57: 427-437.
[6] Ayed S.B., Najar F., Abdelkefi A., 2009, Shape improvement for piezoelectric energy harvesting applications, 3rd International Conference, IEEE 2009: 1-6.
[7] Roundy S., Leland E.S., Baker J., Carleton E., Reilly E., Lai E., Otis B., Rabaey J.M., Wright P.K., Sundararajan V., 2005, Improving power output for vibration-based energy scavengers, IEEE Pervasive Computing 4: 28-36.
[8] Hosseini R., Hamedi M., 2016, An investigation into resonant frequency of trapezoidal V-shaped cantilever piezoelectric energy harvester, Microsystem Technologies 22: 1127-1134.
[9] Yang B., Yun K.-S., 2011, Efficient energy harvesting from human motion using wearable piezoelectric shell structures, 16th International Solid-State Sensors, Actuators and Microsystems Conference, IEEE 2011: 2646-2649.
[10] Hu H., Xue H., Hu Y., 2007, A spiral-shaped harvester with an improved harvesting element and an adaptive storage circuit, IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control 54: 1177-1187.
[11] Karami M.A., Inman D.J., 2012, Parametric study of zigzag microstructure for vibrational energy harvesting, Journal of Microelectromechanical Systems 21: 145-160.
[12] Thomson W., 1996, Theory of Vibration with Applications, CRC Press.
[13] Rao S.S., 2007, Vibration of Continuous Systems, John Wiley & Sons.
[14] Muthalif A.G., Nordin N.D., 2015, Optimal piezoelectric beam shape for single and broadband vibration energy harvesting: Modeling, simulation and experimental results, Mechanical Systems and Signal Processing 54: 417-426.
[15] Hosseini R., Hamedi M., 2015, Improvements in energy harvesting capabilities by using different shapes of piezoelectric bimorphs, Journal of Micromechanics and Microengineering 25:125008.
[16] Hosseini R., Hamedi M., 2015, Study of the resonant frequency of unimorph triangular V-shaped piezoelectric cantilever energy harvester, International Journal of Advanced Design and Manufacturing Technology 8: 75-82.
[17] Hosseini R., Hamedi M., 2016, An investigation into resonant frequency of triangular V-shaped cantilever piezoelectric vibration energy harvester, Journal of Solid Mechanics 8: 560-567.
[18] Hosseini R., Hamedi M., 2016, Resonant frequency of bimorph triangular V-shaped piezoelectric cantilever energy harvester, Journal of Computational and Applied Research in Mechanical Engineering 6: 65-73.
[19] Yang K., Li Z., Jing Y., Chen D., Ye T., 2009, Research on the resonant frequency formula of V-shaped cantilevers, 4th IEEE International Conference on Nano/Micro Engineered and Molecular Systems.
[20] Fakhzan M., Muthalif A.G., 2013, Harvesting vibration energy using piezoelectric material: Modeling, simulation and experimental verifications, Mechatronics 23: 61-66.
[21] Ambrosio R., Gonzalez H., Moreno M., Torres A., Martinez R., Robles E., Sauceda A., Hurtado A., Heredia A., 2014, Study of cantilever structures based on piezoelectric materials for energy harvesting at low frequency of vibration, Advanced Materials Research 2014: 159-163.