Multi-perforated Energy-Efficient Piezoelectric Energy Harvester Using Improved Stress Distribution

ABSTRACT

The principle of piezoelectricity has been used to design the micro-electro-mechanical system-based piezoelectric energy harvester for generating electrical energy from surrounding vibrations. The huge popularity of these energy harvesters (EHs) is due to their small size. This paper designs the EH for the heating, ventilation, and air conditioning system. Different cantilever structures with different shapes of the same fabricated area have been designed and investigated at an excited acceleration of 1 g (9.8 ms⁻²). The multi-perforated cantilever structure has the better stress distribution within the cantilever structure and generates better output voltage and power than their basic design. The proposed tapered multi-perforated cantilever structure has the least value of the resonant frequency of 98.59 Hz which is 31.13% less than the rectangular cantilever structure. The proposed structure generates the output voltage of 14 V which is 91.78% higher than the basic rectangular cantilever structure. It also generates the average output power of 7.15 µW which is 213.59% higher than basic rectangular cantilever structure.

KEYWORDS:

• MEMS
• Piezoelectric energy harvester
• Resonant frequency
• Von Mises stress
• Piezoelectric

ACKNOWLEDGEMENTS

All the authors would like to express our special thanks to the Science and Engineering Research Board (SERB), Govt. of India for funding to execute this research through project ref. no. ECR/2016/001279. This research was not possible without the help and support of BIT Mesra, Ranchi and SERB, Govt. of India.

Additional information

Funding

Funding for this work was supported by Science and Engineering Research Board (SERB), Govt. of India to execute this research through project ref. no. ECR/2016/001279.

Notes on contributors

Ashutosh Anand

Ashutosh Anand currently works as a research scholar at the Department of Electronics and Communication Engineering, Birla Institute of Technology, Mesra. He has done his master's in engineering in ECE from BIT Mesra Ranchi. He completed BTech from NIT Jamshedpur. The current research interests include MEMS, piezoelectric energy harvester and biomedical devices. He is currently involved in the project ‘Mems based energy harvesting for medical devices’.

Srikanta Pal

Srikanta Pal received the BTech from NIT Warangal. He received his ME degree from Jadavpur University and DPHIL from Oxford University. He is currently working as a professor in ECE Department at BIT Mesra Ranchi. He has a vast experience with 8 years in the industry, 22 years in research in various research facilities around the globe. He has the teaching experience of more than 15 years. His research interests include antennas, filters synthesis and analysis, metamaterials, microwave / terahertz imaging & sensors, statistical signal processing, radio astronomy, fractals, EBG/PBG, DGS, reconfigurable geometries and frequency selective surfaces (FSS), RF MEMS, computational electromagnetics, 3D printing, thin film based wireless components using high temperature superconductors, ferroelectrics etc, signal processing of manufacturing processes. Email: [email protected]

Sudip Kundu

Sudip Kundu received the BTech degree in electronics and communication engineering from the Kalyani Govt Engg College, Kalayani, India, in 2003. He received the MS degree in electronics & electrical communication engineering from the Indian Institute of Technology (IIT), Kharagpur, India, in 2010. During MS degree, he worked on modelling of compound semiconductor hetero-structure devices. He was with Bhaba Atomic Research Center from 2005 to 2007. He completed his PhD from IIT, Kharagpur. He worked as an assistant professor in BIT Mesra, Ranchi from 2015 to 2020. Currently, he is working as an assistant professor in NIT Rourkela. His research interests include MEMS, low power VLSI, CMOS power conditioning circuit, design automation of CMOS analog VLSI. Email: [email protected]