Design and Analysis of a Piezoelectric-Based AC Current Measuring Sensor
Electrical current measurement is a suitable method for the performance determination of electrical devices. There are two contact and noncontact methods in this measuring process. Contact method has some disadvantages like having direct connection with wire which may endamage the system. Thus, in this paper, a bimorph piezoelectric cantilever beam which has a permanent magnet on its free end is used to measure electrical current in a noncontact way. In mathematical modeling, based on Galerkin method, the governing equation of the cantilever beam is solved, and the equation presenting the relation between applied force and beam’s output voltage is presented. Magnetic force resulting from current carrying wire is considered as the external excitation force of the system. The results are compared with other references in order to demonstrate the accuracy of the mathematical model. Finally, the effects of geometric parameters on the output voltage and natural frequency are presented.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1132447Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 669
 J. S. Donnal and S. B. Leeb, "Noncontact Power Meter," Sensors Journal, IEEE, vol. 15, pp. 1161-1169, 2015.
 K. Rajitha and M. Manasa, "Home Electrical Parameters Measurements Using Power Sensor Tag," Journal research in electrical electronics and communications, vol. 02.
 E. J. Moniz, "Engaging Electricity Demand," presented at the MIT Study on the Future of the Electric Grid, Cambridge, MA, USA, Dec. 2011.
 S. S. Rao and M. Sunar, "Piezoelectricity and its use in disturbance sensing and control of flexible structures: a survey," Applied mechanics reviews, vol. 47, pp. 113-123, 1994.
 A. Vázquez Carazo and R. Bosch i Tous, "Novel piezoelectric transducers for high voltage measurements," Doctoral, d'Enginyeria Elèctrica, Universitat Politècnica de Catalunya, Barcelona, 2000.
 J. Yang, An introduction to the theory of piezoelectricity vol. 9: Springer Science & Business Media, 2004.
 E. Leland, P. Wright, and R. White, "Design of a MEMS passive, proximity-based AC electric current sensor for residential and commercial loads," in Procedings of PowerMEMS, Freiburg Germany, 2007, pp. 77-80.
 E. S. Leland, P. Wright, and R. M. White, "A MEMS AC current sensor for residential and commercial electricity end-use monitoring," Journal of Micromechanics and Microengineering, vol. 19, p. 094018, 2009.
 E. S. Leland, C. T. Sherman, P. Minor, R. M. White, and P. K. Wright, "A new MEMS sensor for AC electric current," in Sensors, Kona, HI, 2010, pp. 1177-1182.
 K. Isagawa, D. F. Wang, T. Kobayashi, T. Itoh, and R. Maeda, "Development of a MEMS DC electric current sensor applicable to two-wire electrical appliance cord," in International Conference on Nano/Micro Engineered and Molecular Systems (NEMS), 2011, pp. 932-935.
 Q. Xu, M. Seidel, I. Paprotny, R. M. White, and P. K. Wright, "Integrated centralized electric current monitoring system using wirelessly enabled non-intrusive ac current sensors," in IEEE Sensors, Limerick, Ireland, 2011, pp. 1998-2001.
 W. He, P. Li, Y. Wen, and C. Lu, "A self-powered high sensitive sensor for AC electric current," in Sensors, 2011, pp. 1863-1865.
 D. K. Cheng, Field and wave electromagnetics: Pearson Education India, 1989.
 S. S. Rao, Vibration of continuous systems: John Wiley & Sons, 2007.
 A. Erturk and D. J. Inman, Piezoelectric energy harvesting: John Wiley & Sons, 2011.
 A. Erturk and D. J. Inman, "An experimentally validated bimorph cantilever model for piezoelectric energy harvesting from base excitations," Smart materials and structures, vol. 18, p. 025009, 2009.
 J. W. Yi, W. Y. Shih, and W.-H. Shih, "Effect of length, width, and mode on the mass detection sensitivity of piezoelectric unimorph cantilevers," Journal of applied physics, vol. 91, pp. 1680-1686, 2002.
 D. Shen, J.-H. Park, J. H. Noh, S.-Y. Choe, S.-H. Kim, H. C. Wikle, et al., "Micromachined PZT cantilever based on SOI structure for low frequency vibration energy harvesting," Sensors and actuators A: physical, vol. 154, pp. 103-108, 2009.
 X. Li, W. Y. Shih, I. A. Aksay, and W. H. Shih, "Electromechanical Behavior of PZT‐Brass Unimorphs," Journal of the American Ceramic Society, vol. 82, pp. 1733-1740, 1999.
 Z. De-Qing, W. Da-Wei, Y. Jie, Z. Quan-Liang, W. Zhi-Ying, and C. Mao-Sheng, "Structural and electrical properties of PZT/PVDF piezoelectric nanocomposites prepared by cold-press and hot-press routes," Chinese Physics Letters, vol. 25, p. 4410, 2008.
 L. Capineri, L. Masotti, V. Ferrari, D. Marioli, A. Taroni, and M. Mazzoni, "Comparisons between PZT and PVDF thick films technologies in the design of low-cost pyroelectric sensors," Review of Scientific Instruments, vol. 75, pp. 4906-4910, 2004.
 M. J. Ramsay and W. W. Clark, "Piezoelectric energy harvesting for bio-MEMS applications," in SPIE's 8th Annual International Symposium on Smart Structures and Materials, 2001, pp. 429-438.