Array Configurations for Higher Power Generation in Piezoelectric Energy Harvesting

2010 ◽  
Vol 49 (7) ◽  
pp. 07HD04 ◽  
Author(s):  
Daisuke Koyama ◽  
Kentaro Nakamura
Keyword(s):  
Power Generation ◽  
Energy Harvesting ◽  
Piezoelectric Energy Harvesting ◽  
Piezoelectric Energy ◽  
Higher Power

scholarly journals Design of Piezoelectric Tile for Energy Harvesting: Experimental Approach

2021 ◽  
Vol 10 (2) ◽  
pp. 83-89
Author(s):  
Ehsan Maani Miandoab ◽  
Amir Hossein Jafari ◽  
Aref Valipour
Keyword(s):  
Power Generation ◽  
Energy Harvesting ◽  
Piezoelectric Material ◽  
External Force ◽  
Experimental Approach ◽  
Electrical Circuit ◽  
Piezoelectric Energy Harvesting ◽  
Piezoelectric Energy ◽  
Higher Power ◽  
Piezoelectric Elements

The generation of electricity by renewable energies is an important need of today's society. Piezoelectric energy harvesting is one of these useful technologies which can generate electricity by applying external force on piezoelectric material. This study illustrates more power generation from piezoelectric tile by changing the situation of piezo discs and connect to proportional electrical circuit. Two different designs of piezoelectric tile are presented by performing experimental analyses. The experimental results showed that placing piezoelectric elements in a bending position leads to higher power generation in comparison with traditional flat positioning, which was approximately 78 times far superior. It is also revealed that by design of an electrical circuit, the tile can be advantageous for lighting in crowded sidewalks with required lighting time. The results of this paper can be beneficial in the design and fabrication of these tiles for different applications.

Analysis of Piezoelectric Energy Harvesting Schemes and a Proposition for State-of-the-Art Approach in Hydro-Electric Power Generation

2021 ◽  
pp. 173-183
Author(s):  
Anindita Deb ◽  
Debapratim Goswami ◽  
Bishal Bhowmik ◽  
Chandana Shil Sharma ◽  
Debasish Singha ◽  
...  
Keyword(s):  
Power Generation ◽  
Energy Harvesting ◽  
Electric Power ◽  
State Of The Art ◽  
Piezoelectric Energy Harvesting ◽  
Electric Power Generation ◽  
Piezoelectric Energy

Demonstrating the effects of elastic support on power generation and storage capability of piezoelectric energy harvesting devices

2018 ◽  
Vol 30 (2) ◽  
pp. 323-332 ◽  
Author(s):  
Mohammad Reza Zamani Kouhpanji
Keyword(s):  
Power Generation ◽  
Energy Harvesting ◽  
Elastic Properties ◽  
Elastic Support ◽  
Physical Parameters ◽  
Piezoelectric Energy Harvesting ◽  
Piezoelectric Energy ◽  
Piezoelectric Beam ◽  
Energy Harvesting Devices ◽  
And Storage

This study represents effects of an elastic support on the power generation and storage capability of piezoelectric energy harvesting devices. The governing equations were derived and solved for a piezoelectric energy harvesting device made of elastic support, multilayer piezoelectric beam, and a proof mass at its free end. Furthermore, a Thevenin model for a rechargeable battery was considered for storage of the produced power of the piezoelectric energy harvesting device. Analyzing the time-domain and frequency-domain responses of the piezoelectric energy harvesting device on an elastic support shows that the elastic deformation of the support significantly reduces the power generation and storage capability of the device. It was also found that the power generation and storage capability of the piezoelectric energy harvesting device can be enhanced by choosing appropriate physical parameters of the piezoelectric beam even if the elastic properties of the support are poor relative to elastic properties of the piezoelectric beam. These results provide an insightful understanding for designing and material selection for the support in order to reach the highest possible power generation and storage capability for piezoelectric energy harvesting devices.

Investigation of Soft and Hard Ceramics and Single Crystals for Resonant and Off-Resonant Piezoelectric Energy Harvesting

2010 ◽  
Author(s):  
Alper Erturk ◽  
Ho-Yong Lee ◽  
Daniel J. Inman
Keyword(s):  
Power Generation ◽  
Energy Harvesting ◽  
Resonance Frequency ◽  
Single Crystals ◽  
Energy Harvester ◽  
Low Frequency ◽  
Harmonic Excitation ◽  
Resonant Excitation ◽  
Piezoelectric Energy Harvesting ◽  
Piezoelectric Energy

Piezoelectric materials have received the most attention for vibration-to-electricity conversion over the last decade. Harmonic excitation is the most commonly investigated form of excitation in piezoelectric energy harvesting and it can be divided into two subgroups as resonant and off-resonant excitations. Although resonant excitation is preferred for extracting the maximum electrical power output from the device, there are several practical cases where it is not possible to excite the energy harvester at its resonance frequency (e.g. varying frequency excitations or very low frequency excitations where the input frequency is much lower than the fundamental resonance frequency). Several researchers have used soft piezoceramics (e.g. PZT-5A and PZT-5H) for power generation under resonant excitation. Typically, these soft piezoceramics have larger piezoelectric strain constant and larger elastic compliance compared to hard piezoceramics (e.g. PZT-4 and PZT-8). However, it is known that hard piezoceramics can have an order of magnitude larger mechanical quality factor compared to soft piezoceramics. Consequently, hard piezoceramics can generate more power under resonant excitation even though researchers have mostly focused on the soft piezoceramics. On the other hand, soft piezoceramics can generate more power for low frequency excitation below the resonance frequency due to their large effective piezoelectric stress constants. This difference is also the case for soft and hard single crystals (e.g. soft PMN-PZT versus hard PMN-PZT-Mn). In addition, single crystals can generate more power than ceramics at low off-resonant frequencies due to their large dynamic flexibilities (which is related to their large elastic compliances). This work investigates the specific advantages of soft and hard piezoceramics and single crystals for vibration-based energy harvesting. An experimentally validated piezoelectric energy harvester model is used to compare the power generation performances of soft and hard ceramics as well as soft and hard single crystals. The soft and the hard piezoceramics considered in this work are PZT-5H and PZT-8, respectively, while the soft and the hard single crystals considered here are PMN-PZT and PMN-PZT-Mn, respectively.

Performance Analysis of Single Crystal PMN-PZT Unimorphs for Piezoelectric Energy Harvesting

2008 ◽  
Author(s):  
Alper Erturk ◽  
Onur Bilgen ◽  
Daniel J. Inman
Keyword(s):  
Power Generation ◽  
Performance Analysis ◽  
Energy Harvesting ◽  
Single Crystal ◽  
Power Output ◽  
Piezoelectric Ceramic ◽  
Piezoelectric Energy Harvesting ◽  
Piezoelectric Energy ◽  
Shunt Damping ◽  
Power Generation Performance

This paper presents the performance analysis of the single crystal piezoelectric ceramic PMN-PZT (where PMN stands for lead magnesium niobate and PZT stands for lead zirconate titanate) for piezoelectric energy harvesting. Unimorph cantilevers using PMN-PZT layers with Al (aluminum) and SS (stainless steel) substrates are tested under base excitation for a wide range of load resistance (from 10 ohms to 2.2 Mohms). Electrical power generation performance of the unimorphs using PMN-PZT is compared against that of the unimorphs using the conventional piezoelectric ceramic PZT-5H with Al and SS substrates. For both substrates, it is observed that the power density (power output per device volume) and the specific power (power output per device mass) results of the unimorphs using PMN-PZT are about two orders of magnitude larger than those of the unimorphs using PZT-5H. Outstanding power generation performance of the unimorphs with PMN-PZT is associated with stronger resistive shunt damping effect compared to unimorphs with PZT-5H. In addition to the experimental analyses and comparisons, power generation and shunt damping results of a single crystal unimorph are successfully predicted by using a distributed parameter electromechanical model. Results show that single crystal PMN-PZT is a very strong interface for piezoelectric energy harvesting and shunt damping. However, the improved power generation and shunt damping performance of PMN-PZT comes with reduced robustness due to the brittle nature of the single crystalline structure.

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