Flow Driven Vibration Energy Harvester

2010 ◽  
Author(s):  
Enrico Bischur ◽  
Sebastian Pobering ◽  
Markus Menacher ◽  
Norbert Schwesinger
Keyword(s):  
Energy Harvesting ◽  
Vibration Frequency ◽  
Energy Harvester ◽  
Mechanical Vibration ◽  
Vibration Energy ◽  
Vibration Energy Harvesting ◽  
Vibration Energy Harvester ◽  
Macroscopic Models ◽  
Piezoelectric Cantilever ◽  
Working Principle

This paper describes an energy harvester working with the repeated deflection of a piezoelectric cantilever. The harvester works in flowing media like wind or water. The bending of the cantilever is driven by vortices traveling across it. The presented device is an easy solution for vibration energy harvesting without the need of external mechanical vibration. The working principle was determined with macroscopic models in wind and water channels. The harvester does not need in general a mechanical adaption to the external vibration frequency, because it oscillates always with its resonance frequency at different flow velocities. Furthermore a self synchronization of cantilevers arranged beside each other could be observed in water. A second system was able to supply a load of approximatly 2 mW in a wind channel at a flow velocity of 8 m/s.

A Broadband Frequency Piezoelectric Vibration Energy Harvester

2011 ◽  
Vol 483 ◽  
pp. 626-630 ◽  
Author(s):  
Hua An Ma ◽  
Jing Quan Liu ◽  
Gang Tang ◽  
Chun Sheng Yang ◽  
Yi Gui Li ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Frequency Band ◽  
Energy Harvester ◽  
Vibration Energy ◽  
Vibration Energy Harvesting ◽  
Vibration Energy Harvester ◽  
Piezoelectric Cantilever ◽  
Working Frequency ◽  
Piezoelectric Vibration Energy Harvester ◽  
Piezoelectric Vibration

As the low-power wireless sensor components and the development of micro electromechanical systems, long-term supply of components is a major obstacle of their development. One of solutions to this problem is based on the environmental energy collection of piezoelectric vibration energy harvesting. Currently, frequency band of piezoelectric vibration energy harvester is narrow and the frequency is high, which is not fit for the vibration energy acquisition in the natural environment. A piezoelectric vibration energy harvester with lower working frequency and broader band is designed and a test system to analyze the harvester is presented in this paper. The traditional mass is replaced by a permanent magnet in this paper, While other two permanent magnets are also placed on the upper and above of the piezoelectric cantilever. Experiments showed, under the 0.5g acceleration, compared with the traditional non-magnetic piezoelectric vibration energy harvesting, a piezoelectric cantilever (length 40mm, width 8mm, thickness 0.8mm) has a peak-peak voltage of 32.4V, effectively enlarges working frequency band from 67HZ-105HZ to 63HZ-108HZ.

Energy Harvesting Performance of Vertically Staggered Rectangle-Through-Holes Cantilever in Piezoelectric Vibration Energy Harvester

2020 ◽  
Vol 142 (10) ◽  
Author(s):  
Shan Gao ◽  
Hongrui Ao ◽  
Hongyuan Jiang
Keyword(s):  
Energy Harvesting ◽  
Integrated Circuits ◽  
Resonant Frequency ◽  
Power Density ◽  
Energy Harvester ◽  
Vibration Energy ◽  
Vibration Energy Harvesting ◽  
Vibration Energy Harvester ◽  
Cantilevered Beam ◽  
Piezoelectric Vibration

Abstract Piezoelectric vibration energy harvesting technology has attracted significant attention for its applications in integrated circuits, microelectronic devices, and wireless sensors due to high power density, easy integration, simple configuration, and other outstanding features. Among piezoelectric vibration energy harvesting structures, the cantilevered beam is one of the simplest and most commonly used structures. In this work, a vertically staggered rectangle-through-holes (VS-RTH) cantilevered model is proposed, which focuses on the multi-directional vibration collection. To verify the output performance of the device, this paper employs basic materials and fabrication methods with mathematical modeling. The simulations are conducted through finite element methods to discuss the properties of VS-RTH energy harvester on resonant frequency and output characteristics. Besides, an energy storage circuit is adopted as a collection system. It can achieve a maximum voltage of 4.5 V which is responded to the harmonic vibrating input of 1 N force and 1 m/s2 in a single vibrating direction. Moreover, the power density is 2.596 W/cm3 with a 100 kΩ resistor. It is almost four times better than the output of unidirectional cantilever beam with similar resonant frequency and volume. According to the more functionality in the applications, VS-RTH energy harvester can be used in general vibration acquisition of machines and vehicles. Except for electricity storage, the harvester can potentially employ as a sensor to monitor the diversified physical signals for smooth operation and emergence reports. Looking forward, the VS-RTH harvester renders an effective approach toward decomposing the vibration directions in the environment for further complicating vibration applications.

Energy Harvesting Performance of Vertically Staggered Rectangle-Through-Holes Cantilevered in Piezoelectric Vibration Energy Harvester

2019 ◽  
Author(s):  
Shan Gao ◽  
Hongrui Ao ◽  
Hongyuan Jiang
Keyword(s):  
Energy Harvesting ◽  
Integrated Circuits ◽  
Resonant Frequency ◽  
High Power ◽  
Energy Harvester ◽  
Vibration Energy ◽  
Vibration Energy Harvesting ◽  
Vibration Energy Harvester ◽  
Piezoelectric Energy ◽  
Piezoelectric Vibration

Abstract Piezoelectric vibration energy harvesting technology has attracted significant attention for its applications in integrated circuits, microelectronic devices and wireless sensors due to high power density, easy integration, simple configuration and other outstanding features. Among piezoelectric vibration energy harvesting structures, cantilevered beam is one of the simplest and most commonly used structures. In this work, a vertically staggered rectangle-through-holes (VS-RTH) cantilevered model of mesoscale piezoelectric energy harvester is proposed, which focuses on the multi-directional vibration collection and low resonant frequency. To verify the output performances of the device, this paper employs basic materials and fabrication methods with mathematical modeling. The simulations are conducted through finite element methods to discuss the properties of VS-RTH energy harvester on resonant frequency and output characteristics. Besides, an energy storage circuit with high power collection rate is adopted as collection system. This harvester is beneficial to the further application of devices working with continuous vibrations and low power requirements.

scholarly journals Soft and Hard Piezoelectric Ceramics for Vibration Energy Harvesting

Crystals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 907
Author(s):  
Xiaodong Yan ◽  
Mupeng Zheng ◽  
Mankang Zhu ◽  
Yudong Hou
Keyword(s):  
Power Generation ◽  
Energy Harvesting ◽  
Lead Zirconate Titanate ◽  
Energy Harvester ◽  
Piezoelectric Materials ◽  
Lead Zirconate ◽  
Vibration Energy ◽  
Vibration Energy Harvesting ◽  
Low Frequencies ◽  
Vibration Energy Harvester

The question as to which piezoelectric composition is favorable for energy harvesting has been addressed in the past few years. However, discussion on this topic continues. In this work, an answer is provided through a feasible method which can be used in selecting piezoelectric material. The energy harvesting behavior of hard (P4 and P8) and soft (P5 and P5H) lead zirconate titanate (PZT) ceramics was investigated. The results show that the maximum piezoelectric voltage coefficient g33 and transduction coefficient d33 × g33 were obtained in P5 ceramic. Meanwhile, the power generation characteristics at low frequencies were compared by the vibration energy harvester with a cantilever beam structure. The results indicate that the energy harvester fabricated by the P5 ceramic with the maximum d33 × g33 values also demonstrated the best power generation characteristics. The results unambiguously demonstrate that the power density and energy conversion efficiency of the energy harvesting devices are dominated by the d33 × g33 value of the piezoelectric materials.

Vibration Energy Harvesting System Based on Magnetically Controlled Shape Memory Alloy

2013 ◽  
Vol 765-767 ◽  
pp. 2521-2524
Author(s):  
Qing Xin Zhang ◽  
Lu Ping Wang ◽  
Yu Huan Xie ◽  
Zhan Bo Cui
Keyword(s):  
Energy Harvesting ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Energy Harvester ◽  
Vibration Energy ◽  
Electromagnetic Signal ◽  
Vibration Energy Harvesting ◽  
Vibration Energy Harvester ◽  
Power Circuit ◽  
Energy Transducer

Aiming at the problem that the generation power of the vibration generator is small, which is based on current electromechanical energy transducer materials, the conventional circuit could not meet the power supply requirement of the load. First of all, the principle of vibration energy harvesting is analyzed. Furthermore, a new vibration energy harvester based on magnetically controlled shape memory alloy (MSMA) is designed, which were introducing to the intelligent power circuit. The vibration energy harvester based on MSMA solved the problem of low electromagnetic signal change and less deformation that based on other intelligent materials. Last but not least, simulation results show that the new intelligent power circuit can harvest the output power and drive the load to work. Comparing with traditional harvesting circuit, it is superior with lower power consumption and higher efficiency of energy conversion and energy harvesting.

A Curled Piezoelectric Cantilever for Two Dimensional Vibration Energy Harvesting

2013 ◽  
Vol 811 ◽  
pp. 469-473
Author(s):  
Xue Feng He ◽  
Yao Qing Cheng ◽  
Jun Gao ◽  
You Zhu
Keyword(s):  
Energy Harvester ◽  
Proof Mass ◽  
Ambient Vibration ◽  
Vibration Energy ◽  
Two Dimensional ◽  
Vibration Energy Harvesting ◽  
Vibration Direction ◽  
Vibration Energy Harvester ◽  
Piezoelectric Cantilever ◽  
Scavenging Efficiency

To harvest ambient vibration energy of different directions, a micromachined vibration energy harvester which can harvest two-dimensional vibration energy was proposed. The harvester is composed of a curled piezoelectric cantilever, a proof mass and the substrate. One end of the cantilever is fixed onto the substrate and the other end is connected with a proof mass. It is the residual stress of micromachining processes that causes the cantilever to curl. A proof-of-concept prototype of the two-dimensional vibration energy harvester was assembled and tested to evaluate the performance. Experimental results show that the vibration direction with the highest energy scavenging efficiency changed with the frequency of the ambient vibration. The vibration energy of any direction in the neutral plane of the curled cantilever can be harvested by using the first two natural vibration modes of the prototype.

Fabrication and Experimentation of a Cantilever Beam Based Piezoelectric Actuator and Sensor for Vibration Energy Harvesting

2014 ◽  
Vol 592-594 ◽  
pp. 2297-2302
Author(s):  
Prasanta Kumar Samal ◽  
Pramod Kumar Malik ◽  
Avinash Babu ◽  
G.C. Shanthakumar
Keyword(s):  
Cantilever Beam ◽  
Energy Harvester ◽  
Mechanical Vibration ◽  
Electrical Energy ◽  
Vibration Energy ◽  
Vibration Energy Harvesting ◽  
Vibration Energy Harvester ◽  
Labview Software ◽  
Commercial Package ◽  
Using Data

In the immediate surroundings of our daily life, we can find a lot of places where the energy in the form of vibration is being wasted. Therefore, we have enormous opportunities to utilize the same. Piezoelectric character of matter enables us to convert this mechanical vibration energy into electrical energy which can be stored and used to power other device, instead of being wasted. This work is done to realize both actuator and sensor in a cantilever beam based on piezoelectricity. The sensor part is called vibration energy harvester. The numerical analyses were performed for the cantilever beam using the commercial package ANSYS and MATLAB. The cantilever beam is realized by taking a plate and fixing its one end between two massive plates. Two PZT patches were glued to the beam on its two faces. Experiments were performed using data acquisition system (DAQ) and LABVIEW software for actuating and sensing the vibration of the cantilever beam.

scholarly journals An Arc-shaped Piezoelectric Bistable Vibration Energy Harvester: Modeling and Experiments

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4472 ◽  
Author(s):  
Xuhui Zhang ◽  
Wenjuan Yang ◽  
Meng Zuo ◽  
Houzhi Tan ◽  
Hongwei Fan ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Electromechanical Coupling ◽  
Energy Harvester ◽  
Magnetic Coupling ◽  
Load Resistance ◽  
Vibration Energy ◽  
Electromechanical Coupling Coefficient ◽  
Vibration Energy Harvesting ◽  
Vibration Energy Harvester ◽  
Modeling And Experiments

In order to improve vibration energy harvesting, this paper designs an arc-shaped piezoelectric bistable vibration energy harvester (ABEH). The bistable configuration is achieved by using magnetic coupling, and the nonlinear magnetic force is calculated. Based on Lagrangian equation, piezoelectric theory, Kirchhoff’s law, etc., a complete theoretical model of the presented ABEH is built. The influence of the nonlinear stiffness terms, the electromechanical coupling coefficient, the damping, the distance between magnets, and the load resistance on the dynamic response and the energy harvesting performance of the ABEH is numerically explored. More importantly, experiments are designed to verify the energy harvesting enhancement of the ABEH. Compared with the non-magnet energy harvester, the ABEH has much better energy harvesting performance.

Simply supported FPEDs connected by springs for broadband energy harvesting

2020 ◽  
Vol 64 (1-4) ◽  
pp. 201-210
Author(s):  
Yoshikazu Tanaka ◽  
Satoru Odake ◽  
Jun Miyake ◽  
Hidemi Mutsuda ◽  
Atanas A. Popov ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Evaluation Method ◽  
Energy Harvester ◽  
Vibrational Energy ◽  
Functional Materials ◽  
Vibration Energy ◽  
Theoretical Evaluation ◽  
Vibration Energy Harvester ◽  
Polyvinylidene Difluoride ◽  
Simply Supported

Energy harvesting methods that use functional materials have attracted interest because they can take advantage of an abundant but underutilized energy source. Most vibration energy harvester designs operate most effectively around their resonant frequency. However, in practice, the frequency band for ambient vibrational energy is typically broad. The development of technologies for broadband energy harvesting is therefore desirable. The authors previously proposed an energy harvester, called a flexible piezoelectric device (FPED), that consists of a piezoelectric film (polyvinylidene difluoride) and a soft material, such as silicon rubber or polyethylene terephthalate. The authors also proposed a system based on FPEDs for broadband energy harvesting. The system consisted of cantilevered FPEDs, with each FPED connected via a spring. Simply supported FPEDs also have potential for broadband energy harvesting, and here, a theoretical evaluation method is proposed for such a system. Experiments are conducted to validate the derived model.

Sign in / Sign up

Export Citation Format

Share Document