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J Electromagn Eng Sci > Volume 8(1); 2008 > Article
Journal of the Korean Institute of Electromagnetic and Science 2008;8(1):6-11.
DOI: https://doi.org/10.5515/JKIEES.2008.8.1.006   
Analytical Models to Predict Power Harvesting with Piezoelectric Transducer
Raghava Raju Muppala1, K. Padma Raju2, Nam-Mee Moon3, Baek-Ho Jung4
1Daewoo Shipbuilding and Marine Engineering Ltd.
2Electronics and Communication Engineering, Jawaharlal Nehru Technological University
3Graduate School of Venture, Hoseo University
4Department of Information and Communication Engineering, Hoseo University
Abstract
Advances in low power design open the possibility to harvest energy from the environment to power electronic circuits. Electrical energy can be harvested from piezoelectric transducer. Piezoelectric materials can be used as mechanisms to transfer mechanical energy usually vibrating system into electrical energy that can be stored and used to power other devices. Micro- to milli-watts power can be generated from vibrating system. We developed definitive and analytical models to predict the power generated from a cantilever beam attached with piezoelectric transducer. Analytical models are pin-force method, enhanced pin-force method and Euler-Bernoulli method. Harmonic oscillations and random noise will be the two different forcing functions used to drive each system. It has been selected the best model for generating electric power based upon the analytical results obtained.
Key words: Vibration-to-Electric Energy Conversion, Self-Powered Sensors, PZT, Cantilever Beam, Power Harvesting, Harmonic Driving Force
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