Title :
Towards the development of efficient low frequency piezoelectric energy harvesters
Author :
Shukla, Rahul ; Qaisar, S. Adam ; Bell, Andrew J.
Author_Institution :
Sch. of Process Environ. & Mater. Eng., Univ. of Leeds, Leeds, UK
Abstract :
Piezoelectric energy harvesters are being examined thoroughly as a potential source of electrical power when harnessing surrounding mechanical vibrations. In literature, high frequency energy harvesters are discussed in sufficient details. The development of piezoelectric energy harvester becomes extremely challenging when source vibration frequency is very low. This is due to incompatible stiffness over mass ratio of piezoelectric device for resonance. This paper addresses the issues involved with the piezoelectric energy harvesting using the very low frequency mechanical vibrations of 2 Hz or less. The generated maximum power from THUNDER, Macro Fibre Composite (MFC) and Polyvinylidene flouride (PVDF) devices are compared with the conventional PbZrO3-PbTiO3 (PZT) bimorph devices under varying input displacements and forces.
Keywords :
elastic constants; energy harvesting; fibres; piezoelectric devices; polymers; vibrations; conventional bimorph devices; electrical power; low frequency piezoelectric energy harvesters; macrofibre composite devices; mass ratio; mechanical vibrations; polyvinylidene flouride devices; source vibration frequency; stiffness; Energy harvesting; Generators; Materials; Piezoelectric devices; Resonant frequency; Vibrations; Wireless sensor networks; energy harvester; low frequency; piezoelectric; power generator;
Conference_Titel :
Applications of Ferroelectrics (ISAF), 2010 IEEE International Symposium on the
Conference_Location :
Edinburgh
Print_ISBN :
978-1-4244-8190-3
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2010.5712228
