Enhanced piezoelectric energy harvesting power with thermoelectric energy assistance

2021 ◽  
pp. 1045389X2199123
Author(s):  
Zhidong Chen ◽  
Yinshui Xia ◽  
Ge Shi ◽  
Huakang Xia ◽  
Xiudeng Wang ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Open Circuit Voltage ◽  
Life Time ◽  
Open Circuit ◽  
Piezoelectric Energy Harvesting ◽  
Piezoelectric Energy ◽  
Thermoelectric Energy ◽  
Energy Assistance ◽  
Standard Energy ◽  
Power Generation Performance

The demand for life-time power supply in Internet of Things (IoT) nodes is a challenge issue. Piezoelectric energy harvesting (PEH) is expected to meet the demand by harvesting vibration energy and converting it into electricity for the IoT nodes. This article presents a novel PEH power improvement circuit with thermoelectric energy assistance. The proposed circuit can extract energy from thermoelectric generator (TEG) to assist the PEH. Simulation and experimental platforms are built for testing the power generation performance of the proposed circuit. With the thermoelectric assistance of 0.1 V and 0.2 V, the harvested power can reach 3.4 times and 4 times that of the standard energy harvesting (SEH) circuit when the piezoelectric transducer (PZT) original open circuit voltage Voc,org = 8 V, respectively. The harvested power can be increased by 13.3% and 33.3% with the thermoelectric assistance of 0.1 V and 0.2 V, respectively.

Designing Test Machine for Piezoelectric Energy Harvesting from Pavement Deformation

2014 ◽  
Vol 953-954 ◽  
pp. 1435-1438
Author(s):  
Chun Hua Sun ◽  
Guang Qing Shang
Keyword(s):  
Energy Harvesting ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Piezoelectric Energy Harvesting ◽  
Test Machine ◽  
Energy Technology ◽  
Piezoelectric Energy ◽  
New Type ◽  
Driving Condition ◽  
Design Requirements

To find the new type of sustainable and renewable energy and harvest energy from pavement deformation, a new idea of designing test machine to harvest piezoelectric energy from pavement is innovatively proposed. A mathematical model of open-circuit voltage is deduced from the piezoelectric equations. Design requirements of the test machine are proposed based on the model and vehicle driving condition. The construction and work principle of the machine are elaborated. A prototype of the test machine is designed and manufactured. Some experiment is done to test the excited voltage of a series of piezoelectric harvesters with the test machine. The result shows that the measured data are basically the same to the theoretical ones. It is feasible to use the test machine for measuring piezoelectric energy harvesting characteristics from pavement deformation. Therefore, the machine can be applied for in-depth and systematic studying piezoelectric harvesting energy technology from pavement deformation.

Energy management based on fractional open circuit and P-SSHI techniques for piezoelectric energy harvesting

2019 ◽  
Vol 86 (1) ◽  
pp. 14-24 ◽  
Author(s):  
Manel Zouari ◽  
Slim Naifar ◽  
Ghada Bouattour ◽  
Nabil Derbel ◽  
Olfa Kanoun
Keyword(s):  
Energy Harvesting ◽  
Energy Management ◽  
Open Circuit ◽  
Maximum Efficiency ◽  
Piezoelectric Energy Harvesting ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Piezoelectric Energy ◽  
Self Powered ◽  
Power Point

AbstractSelf-powered energy management circuits make energy harvesting converters more efficient and more reliable. This paper presents an improvement of a Maximum Power Point Tracking (MPPT) technique applied on a Parallel Synchronized Switch Harvesting on Inductor (P-SSHI) technique for piezoelectric vibration converters. The aims are to detect the unstable vibrational state, optimize the output voltage and maximize the output power of the piezoelectric transducer.First, the P-SSHI technique is implemented without an MPPT technique. Then, an MPPT technique based on Fractional Open Circuit (FOC) voltage method is implemented. An improvement of the FOC method is proposed to enhance the capability of the Piezoelectric Energy Harvesting (PEH) system. The comparison between different simulation results shows that by using the same input parameters, the maximum efficiency for the PEH system based on the P-SSHI technique implemented without MPPT is 8.82 % whereas the maximum efficiency of the system based on the (FOC) voltage MPPT method is 13.77 %. A significant improvement of the PEH system is obtained by using the modified (FOC) method, where the efficiency reached 24.59 %.

Piezoelectric Energy Harvesting and Dissipation on Structural Damping

2008 ◽  
Vol 20 (5) ◽  
pp. 515-527 ◽  
Author(s):  
J.R. Liang ◽  
W.H. Liao
Keyword(s):  
Energy Harvesting ◽  
Energy Flow ◽  
Piezoelectric Materials ◽  
Piezoelectric Energy Harvesting ◽  
Structural Damping ◽  
Piezoelectric Energy ◽  
Vibrating Structures ◽  
Shunt Damping ◽  
Standard Energy ◽  
Piezoelectric Devices

This article aims to provide a comparative study on the functions of piezoelectric energy harvesting, dissipation, and their effects on the structural damping of vibrating structures. Energy flow in piezoelectric devices is discussed. Detailed modeling of piezoelectric materials and devices are provided to serve as a common base for both analyses of energy harvesting and dissipation. Based on these foundations, two applications of standard energy harvesting (SEH) and resistive shunt damping (RSD) are investigated and compared. Furthermore, in the application of synchronized switch harvesting on inductor (SSHI), it is shown that the two functions of energy harvesting and dissipation are coexistent. Both of them bring out structural damping. Further analyses and optimization for the SSHI technique are performed.

scholarly journals Modeling of a Symmetric Five-Bar Displacement Amplification Compliant Mechanism for Energy Harvesting

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1095
Author(s):  
Moataz M. Elsisy ◽  
Mustafa H. Arafa ◽  
Chahinaz A. Saleh ◽  
Yasser H. Anis
Keyword(s):  
Mathematical Model ◽  
Energy Harvesting ◽  
Open Circuit Voltage ◽  
Compliant Mechanism ◽  
Numerical Models ◽  
Open Circuit ◽  
Design Parameters ◽  
Mathematical Representation ◽  
Piezoelectric Energy ◽  
The Mathematical Model

This paper presents an analytical model to determine a closed form mathematical representation for the output displacement of a displacement amplification compliant mechanism used for energy harvesting. A symmetric five-bar compliant mechanism with right-circular and corner-filleted flexure hinges was mathematically modeled and its displacement was determined using the Castigliano energy theorem. The stresses within the flexure joints, the weakest points in the mechanism body, were calculated. The mathematical model expresses both the displacement amplification and the stresses as functions of the design parameters and the load caused by the harvester. The developed model can be used to optimize the mechanism dimensions for maximum harvested power, while minimizing its structural stresses. The mechanism was also modeled numerically using finite element methods; both the analytical and numerical models were verified experimentally. The mathematical model of the mechanism was integrated with a model representing a piezoelectric energy harvester to calculate the open-circuit voltage. As a proof of concept, experiments were performed using an unimorph piezoelectric cantilever at low-frequency (less than 1 Hz) harmonic excitation inputs. The measured open-circuit voltage was found to be in agreement with that calculated using the proposed model, when integrated with the model representing the piezoelectric beam. The power generated by the piezoelectric harvester, equipped with the proposed displacement amplification mechanism, was more than a hundred times that without amplification.

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.

Investigation of efficient piezoelectric energy harvesting from impulsive force

2020 ◽  
Vol 59 (SP) ◽  
pp. SPPD04
Author(s):  
S. Aphayvong ◽  
T. Yoshimura ◽  
S. Murakami ◽  
K. Kanda ◽  
N. Fujimura
Keyword(s):  
Energy Harvesting ◽  
Piezoelectric Energy Harvesting ◽  
Impulsive Force ◽  
Piezoelectric Energy

scholarly journals Piezoelectric Energy Harvesting Solutions: A Review

Sensors ◽  
2020 ◽  
Vol 20 (12) ◽  
pp. 3512 ◽  
Author(s):  
Corina Covaci ◽  
Aurel Gontean
Keyword(s):  
Energy Harvesting ◽  
Piezoelectric Effect ◽  
Piezoelectric Transducers ◽  
Piezoelectric Energy Harvesting ◽  
Piezoelectric Energy ◽  
Direct Piezoelectric Effect ◽  
Harvesting Technique ◽  
Different Shapes ◽  
Piezoelectric Devices ◽  
Review Current

The goal of this paper is to review current methods of energy harvesting, while focusing on piezoelectric energy harvesting. The piezoelectric energy harvesting technique is based on the materials’ property of generating an electric field when a mechanical force is applied. This phenomenon is known as the direct piezoelectric effect. Piezoelectric transducers can be of different shapes and materials, making them suitable for a multitude of applications. To optimize the use of piezoelectric devices in applications, a model is needed to observe the behavior in the time and frequency domain. In addition to different aspects of piezoelectric modeling, this paper also presents several circuits used to maximize the energy harvested.

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