Design, analysis and experimental investigation of a rotational piezoelectric energy harvester with storage system
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DOI 10.1007/s12206-020-1008-4
Journal of Mechanical Science and Technology 34 (11) 2020 Original Article DOI 10.1007/s12206-020-1008-4 Keywords: · Analytical modeling · Capacitor storage · Finite-element analysis · Piezoelectric energy harvesting · Rotational motion system · Wireless sensor
Correspondence to: G. Uma [email protected]
Citation: Raja, V., Umapathy, M., Uma, G., Praveen, K. B., Premkumar S. (2020). Design, analysis and experimental investigation of a rotational piezoelectric energy harvester with storage system. Journal of Mechanical Science and Technology 34 (11) (2020) 4475~4487. http://doi.org/10.1007/s12206-020-1008-4
Received March 28th, 2020 Revised
August 13th, 2020
Accepted August 27th, 2020
Design, analysis and experimental investigation of a rotational piezoelectric energy harvester with storage system Raja V1, Umapathy M1, Uma G1, Praveen kumar B2 and Premkumar S2 1
Department of Instrumentation and Control Engineering, National Institute of Technology, Tiruchirappalli, 2 Tamil Nadu, India, Armament Research and Development Establishment, Defence Research and Development Organisation, Pune, India
Abstract
Energy harvesting from rotational motion has drawn attention over the years to energise low-power wireless sensor networks in a rotating environment. The harvester works efficiently in a small frequency range which has to be similar to the driving frequency. Because of the constraints of size, precision, and the energy harvester’s weight, it is challenging to design it to suit micro applications. To deal with this problem, this paper proposes a rotational piezoelectric energy harvester (RPEH), which generates a voltage output from rotational motion. This design increases the gravitational force acting on the system by increasing the length of the beam, which in turn increases its vibration in a transverse direction. Euler-Bernoulli’s theory is utilized to derive the mathematical model of the RPEH under rotational motion, and harvester dynamic equations are derived using the electromechanical Lagrange equations. A prototype of RPEH is developed and the exactness of the proposed mathematical model is verified using experimental results and numerical simulation. Maximum power of 43.77 µW is produced at a rotating frequency of 21 Hz (1260 rpm) with an optimum load resistance of 1141.3 kΩ.
† Recommended by Editor No-cheol Park
1. Introduction
© The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2020
In recent years, internet of things (IoT) has drawn attention to aspects of human life such as healthcare centers, agriculture, industrial automation, etc. [1]. Wireless sensor networks (WSNs) are normally involved sensing and data transmission [2, 3]. An important challenge for the WSN system is powering nodes in hazardous locations and harsh environments [4]. These nodes are normally powered by batteries that have restricted durability require periodic replacement. Exploiting ambient energy to power these nodes is a promising solution. En
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