Investigation of a hybrid piezo-electromagnetic energy harvester
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Murugesan Rajarathinam
Mr. M. Rajarathinam received his B. E. in Mechanical Engineering from Periyar University, India. He received his M. E. in Engineering Design from Anna University, India. Currently, he is a research scholar in the Department of Applied Mechanics, Indian Institute of Technology Madras (IIT-M), India. His research area includes energy harvesting, smart structures, and nonlinear dynamics.
Dr. Shaikh Faruque Ali has received his Doctorate from Indian Institute of Science, India in 2008. He was a Newton International Fellow in the University of Swansea, Swansea, UK. Dr. Ali joined the Department of Applied Mechanics, Indian Institute of Technology Madras (IIT-M) on December 2011 and currently he is an Assistant Professor. His research interest includes vibration control, control of nonlinear systems, feedback linearisation, energy harvesting and structural dynamics.
Abstract
A hybrid energy harvester combining piezoelectric and electromagnetic transduction mechanisms is designed to scavenge vibration energy. The system comprises of a cantilever beam, a piezoelectric harvester and a magnetic mass hung through a spring at the free end. The beam with piezoelectric harvests electrical energy due to the strain induced in the piezoelectric patch. The hung mass oscillates in and out a solenoid to harvest energy due to electromagnetic induction. The system can generate power from any vertically oscillating vibrating host structure. This paper studies the power harvested from the hybrid harvester under harmonic excitation using experimental and analytical evaluations. Comparisons are made with the standalone piezoelectric and electromagnetic harvester under the same excitation environment. The study shows that the present hybrid harvester can harvest energy at a broad range of frequencies. Furthermore few parametric studies are carried out for understanding the device performance. Finally, the efficiency of the proposed hybrid energy harvester is compared with the existing hybrid energy harvester.
Zusammenfassung
Ein hybrider Energy-Harvester, welcher piezoelektrische und elektromagnetische Umwandlungsmechanismen kombiniert, wurde entwickelt, um Vibrationsenergie zu gewinnen. Das System besteht aus einem Biegebalken (Cantilever), einem darauf befestigten piezoelektrischen Harvester und einer magnetischen Masse, die über eine Feder mit dem Biegebalken verbunden ist. Der Biegebalken gewinnt elektrische Energie aufgrund der im piezoelektrischen Harvester induzierten mechanischen Spannungen. Die aufgehängte magnetische Masse oszilliert innerhalb einer Spule und erlaubt die Gewinnung von Energie durch elektromagnetische Induktion. Das System kann Strom von jeder vertikal schwingenden, vibrierenden Trägerstruktur erzeugen. Im Aufsatz wird die vom hybriden Harvester unter harmonischer Erregung gewinnbare Energie sowohl analytisch als auch experimentell untersucht. Dabei werden Vergleiche mit einzelnen piezoelektrischen und elektromagnetischen Harvestern unter dem gleichen Anregungsszenario durchgeführt. Es wird gezeigt, dass der vorgestellte Harvester Energie in einem breiten Spektrum an Frequenzen gewinnen kann. Darüber hinaus werden einige parametrische Studien durchgeführt, um die Leistungsfähigkeit des Harvesters zu verstehen. Schließlich wird der vorgeschlagene hybride Energy-Harvester mit bestehenden Harvestern verglichen.
About the authors
Mr. M. Rajarathinam received his B. E. in Mechanical Engineering from Periyar University, India. He received his M. E. in Engineering Design from Anna University, India. Currently, he is a research scholar in the Department of Applied Mechanics, Indian Institute of Technology Madras (IIT-M), India. His research area includes energy harvesting, smart structures, and nonlinear dynamics.
Dr. Shaikh Faruque Ali has received his Doctorate from Indian Institute of Science, India in 2008. He was a Newton International Fellow in the University of Swansea, Swansea, UK. Dr. Ali joined the Department of Applied Mechanics, Indian Institute of Technology Madras (IIT-M) on December 2011 and currently he is an Assistant Professor. His research interest includes vibration control, control of nonlinear systems, feedback linearisation, energy harvesting and structural dynamics.
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© 2018 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Research Articles
- Numerical analysis and experimental verification of broadband tristable energy harvesters
- Use it or lose it: The influence of second order effects of practical components on storing energy harvested by pyroelectric effects
- Investigation of a hybrid piezo-electromagnetic energy harvester
- Stiffness control of a nonlinear mechanical folded beam for wideband vibration energy harvesters
- Numerical investigation of nonlinear mechanical and constitutive effects on piezoelectric vibration-based energy harvesting
- Evaluation of multiple transducers implementation in a magnetoelectric vibration energy harvester
Articles in the same Issue
- Frontmatter
- Research Articles
- Numerical analysis and experimental verification of broadband tristable energy harvesters
- Use it or lose it: The influence of second order effects of practical components on storing energy harvested by pyroelectric effects
- Investigation of a hybrid piezo-electromagnetic energy harvester
- Stiffness control of a nonlinear mechanical folded beam for wideband vibration energy harvesters
- Numerical investigation of nonlinear mechanical and constitutive effects on piezoelectric vibration-based energy harvesting
- Evaluation of multiple transducers implementation in a magnetoelectric vibration energy harvester
