Low-frequency and wideband vibration energy harvester with flexible frame and interdigital structure

Journal Article · Wed Apr 15 04:00:00 EDT 2015 · AIP Advances

DOI:https://doi.org/10.1063/1.4919711· OSTI ID:22488552

Li, Pengwei; Wang, Yanfen; Luo, Cuixian; Li, Gang; Hu, Jie; Zhang, Wendong ^[1]; Liu, Ying ^[1]; Liu, Wei ^[2]

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1. MicroNano System Research Center of College of Information Engineering and Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, Shanxi (China)
2. Baicheng Ordnance Test Center of China, Baicheng 137000, Jilin (China)

As an alternative to traditional cantilever beam structures and their evolutions, a flexible beam based, interdigital structure, vibration energy harvester has been presented and investigated. The proposed interdigital-shaped oscillator consists of a rectangular flexible frame and series of cantilever beams interdigitally bonded to it. In order to achieve low frequency and wide-bandwidth harvesting, Young’s modulus of materials, frame size and the amount of the cantilevers have been studied systematically. The measured frequency responses of the designed device (PDMS frame, quintuple piezoelectric cantilever beams) show a 460% increase in bandwidth below 80Hz. When excited at an acceleration of 1.0 g, the energy harvester achieves to a maximum open-circuit voltage of 65V, and the maximum output power 4.5 mW.

• OSTI ID: 22488552
• Journal Information: AIP Advances, Journal Name: AIP Advances Journal Issue: 4 Vol. 5; ISSN AAIDBI; ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
BEAMS
DESIGN
ELECTRIC POTENTIAL
OSCILLATORS
PIEZOELECTRICITY
SIMULATION