Geometric Optimization of a Piezoelectric Power Harvesting Plate for Increased Bandwidth

2007 ◽  
Author(s):  
Lee Wells ◽  
Yirong Lin ◽  
Henry Sodano ◽  
Byeng Youn
Keyword(s):  
Energy Harvesting ◽  
Electrical Energy ◽  
Maximum Energy ◽  
Geometric Optimization ◽  
Signal Frequency ◽  
Field Energy ◽  
Energy Scavenging ◽  
Power Harvesting ◽  
Topology And Shape Optimization ◽  
Battery Technology

The continual advances in wireless technology and low power electronics have allowed the deployment of small remote sensor networks. However, current portable and wireless devices must be designed to include electrochemical batteries as the power source. The use of batteries can be troublesome due to their limited lifespan, thus necessitating their periodic replacement. Furthermore, the growth of battery technology has remained relatively stagnant over the past decade while the performance of computing systems has grown steadily, which leads to increased power usage from the electronics. In the case of wireless sensors that are to be placed in remote locations, the sensor must be easily accessible or of disposable nature to allow the device to function over extended periods of time. For this reason the primary question becomes how to provide power to each node. This issue has spawned the rapid growth of the energy harvesting field. Energy scavenging devices are designed to capture the ambient energy surrounding the electronics and convert it into usable electrical energy. The concept of power harvesting works towards developing self-powered devices that do not require replaceable power supplies. However, when designing a vibration based energy harvesting system the maximum energy generation occurs when the resonant frequency of the system is tuned to the input. This poses certain issues for their practical application because structural systems rarely vibrate at a signal frequency. Therefore, this effort will investigate the optimal geometric design of two dimensional energy harvesting systems for maximized bandwidth. Topology and shape optimization will be used to identify the optimal geometry and experiments will be performed to characterize the energy harvesting improvement when subjected to random vibrations.

Experimental Research of Energy Harvesting and Storage Based on Ferroelectric Materials

2012 ◽  
Vol 476-478 ◽  
pp. 1336-1340
Author(s):  
Kai Feng Li ◽  
Rong Liu ◽  
Lin Xiang Wang
Keyword(s):  
Energy Harvesting ◽  
Electromagnetic Waves ◽  
Vibrational Energy ◽  
Waste Heat ◽  
Mechanical Strain ◽  
Electrical Potential ◽  
Electrical Energy ◽  
Ferroelectric Materials ◽  
Energy Scavenging ◽  
And Storage

The concept of energy harvesting works towards developing self-powered devices that do not require replaceable power supplies. Energy scavenging devices are designed to capture the ambient energy surrounding the electronics and convert it into usable electrical energy. A number of sources of harvestable ambient energy exist, including waste heat, vibration, electromagnetic waves, wind, flowing water, and solar energy. While each of these sources of energy can be effectively used to power remote sensors, the structural and biological communities have placed an emphasis on scavenging vibrational energy with ferroelectric materials. Ferroelectric materials have a crystalline structure that provide a unique ability to convert an applied electrical potential into a mechanical strain or vice versa. Based on the properties of the material, this paper investigates the technique of power harvesting and storage.

Manufacture and Experimental Investigation of a Multi-Layer Generator Based on Dielectric Elastomer

2014 ◽  
Vol 960-961 ◽  
pp. 1336-1341
Author(s):  
Xue Jing Liu ◽  
Gong Zhang ◽  
Yong Quan Wang ◽  
Shu Hai Jia
Keyword(s):  
Energy Harvesting ◽  
Light Emitting Diode ◽  
Electrical Energy ◽  
Dielectric Elastomer ◽  
Maximum Energy ◽  
Open Circuit ◽  
Light Emitting ◽  
Energy Harvesting Efficiency ◽  
Open Circuit Condition ◽  
Constant Charge

As a member of Electroactive Polymers (EAPs), dielectric elastomer (DE) has shown considerable potential for energy harvesting applications. After the basic principle of DE energy harvesting is studied, a multi-layer DE generator using VHB 4910 (3M, USA) is specially designed and fabricated. Then, an improved energy harvesting circuit is designed to make use of harvested electrical energy. Finally, energy harvesting experiments are implemented under the constant charge (open-circuit) condition and the results prove that the multi-layer DE generator fabricated can produce enough energy to constantly drive a light emitting diode. The harvested electrical energy has good consistent with generated electrical energy and the maximum energy harvesting efficiency ηh can reach 89%.

scholarly journals Impact Review Analysis & Scope of Noise Pollution for Energy Harvesting

2021 ◽  
Author(s):  
Arunesh Kumar Singh ◽  
◽  
Shahida Khatoon ◽  
Kriti Kriti ◽  
Abhinav Saxena ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Urban Areas ◽  
Noise Pollution ◽  
Electrical Energy ◽  
Clean Energy ◽  
Pollution Level ◽  
Energy Scavenging ◽  
Electricity Grid ◽  
Commercial Activities ◽  
The Impact

Process of obtaining energy from the environment can be called as energy scavenging or energy harvesting. In this paper, we explore the scope of scavenging electrical energy from the noise pollution present in environment and review various energy harvesting techniques for this purpose. Basically, noise is an unwanted sound that is loud, unpleasant and unexpected. Very high population, industrial, commercial activities and transportation increase the noise pollution level in the environment. In urban areas, transport related noise is the major cause of noise pollution. We know that electricity requirement is increasing day by day. Clean energy resources can help the electricity grid to fulfill the increased requirement without bad consequences. Clean energy does not produce any waste, which can pollute the environment. The various mathematical expressions have shown to minimize the level of noise pollution. With help of empirical formula more electricity can be produced. We reviewed the impact of transportation noise pollution, avoidance methods and simultaneous opportunity to transform it into electrical energy.

scholarly journals Microstereolithography of Three-Dimensional Polymeric Springs for Vibration Energy Harvesting

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Evan Baker ◽  
Timothy Reissman ◽  
Fan Zhou ◽  
Chen Wang ◽  
Kevin Lynch ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Three Dimensional ◽  
Low Frequency ◽  
Electrical Energy ◽  
Maximum Energy ◽  
Open Circuit ◽  
Vibration Energy ◽  
Vibration Energy Harvesting ◽  
Spring Element ◽  
Constant Pitch

The inefficiency in converting low frequency vibration (6~240 Hz) to electrical energy remains a key issue for miniaturized vibration energy harvesting devices. To address this subject, this paper reports on the novel, three-dimensional micro-fabrication of spring elements within such devices, in order to achieve resonances and maximum energy conversion within these common frequencies. The process, known as projection microstereolithography, is exploited to fabricate polymer-based springs direct from computer-aided designs using digital masks and ultraviolet-curable resins. Using this process, a micro-spring structure is fabricated consisting of a two-by-two array of three-dimensional, constant-pitch helical coils made from 1,6-hexanediol diacrylate. Integrating the spring structure into an electromagnetic device, with a magnetic load mass of 1.236 grams, the resonance is measured at 61 Hz, which is within 2% of the theoretical model. The device provides a maximum normalized power output of 9.14 μW/G (G=9.81 ms−2) and an open circuit normalized voltage output of 621 mV/G. To the best of the authors knowledge, notable features of this work include the lowest Young’s modulus (530 MPa), density (1.011 g/cm3), and “largest feature size” (3.4 mm) for a spring element in a vibration energy harvesting device with sub-100 Hz resonance.

scholarly journals Pyroelectric Energy Conversion and Its Applications—Flexible Energy Harvesters and Sensors

Sensors ◽  
2019 ◽  
Vol 19 (9) ◽  
pp. 2170 ◽  
Author(s):  
Atul Thakre ◽  
Ajeet Kumar ◽  
Hyun-Cheol Song ◽  
Dae-Yong Jeong ◽  
Jungho Ryu
Keyword(s):  
Energy Harvesting ◽  
Energy Conversion ◽  
Thermal Energy ◽  
Cost Effective ◽  
Electrical Energy ◽  
Energy Scavenging ◽  
Hybrid Energy ◽  
Energy Harvesters ◽  
Sensor Applications ◽  
Sensing Applications

Among the various forms of natural energies, heat is the most prevalent and least harvested energy. Scavenging and detecting stray thermal energy for conversion into electrical energy can provide a cost-effective and reliable energy source for modern electrical appliances and sensor applications. Along with this, flexible devices have attracted considerable attention in scientific and industrial communities as wearable and implantable harvesters in addition to traditional thermal sensor applications. This review mainly discusses thermal energy conversion through pyroelectric phenomena in various lead-free as well as lead-based ceramics and polymers for flexible pyroelectric energy harvesting and sensor applications. The corresponding thermodynamic heat cycles and figures of merit of the pyroelectric materials for energy harvesting and heat sensing applications are also briefly discussed. Moreover, this study provides guidance on designing pyroelectric materials for flexible pyroelectric and hybrid energy harvesting.

Amplified Piezoelectric Stack Actuators for Harvesting Electrical Energy From a Backpack

2007 ◽  
Author(s):  
Joel Feenstra ◽  
Jonathan Granstrom ◽  
Henry A. Sodano
Keyword(s):  
Energy Harvesting ◽  
Experimental Testing ◽  
Electrical Energy ◽  
Wearable Electronics ◽  
The Past ◽  
Higher Power ◽  
Recent Developments ◽  
Battery Technology ◽  
Piezoelectric Stack Actuator ◽  
Made In

Over the past few decades the use of portable and wearable electronics has grown steadily. These devices are becoming increasingly more powerful, however, the gains that have been made in the device performance has resulted in the need for significantly higher power to operate the electronics. This issue has been further complicated due to the stagnate growth of battery technology over the past decade. In order to increase the life of these electronics, researchers have begun investigating methods of generating energy from ambient sources such that the life of the electronics can be prolonged. Recent developments in the field have led to the design of a number of mechanisms that can be used to generate electrical energy, from a variety of sources including thermal, solar, strain, inertia, etc. Many of these energy sources are available for use with humans, but their use must be carefully considered such that parasitic effects that could disrupt the user’s gait or endurance are avoided. This study develops a novel energy harvesting backpack that can generate electrical energy from the differential forces between the wearer and the pack. The goal of this system is to make the energy harvesting device transparent to the wearer such that his or her endurance and dexterity is not compromised. This will be accomplished by replacing the strap buckle with a mechanically amplified piezoelectric stack actuator. Piezoelectric stack actuators have found little use in energy harvesting applications due to their high stiffness which makes straining the material difficult. This issue will be alleviated using a mechanically amplified stack which allows the relatively low forces generated by the pack to be transformed to high forces on the piezoelectric stack. This paper will develop a theoretical model of the piezoelectric buckle and perform experimental testing to validate the model accuracy and energy harvesting performance.

scholarly journals Flexible Smart Material With Excellent Energy Harvesting

2021 ◽  
Author(s):  
Nabil Chakhchaoui ◽  
Rida Farhan ◽  
Yu-Ming Chu ◽  
Umair Khan ◽  
Adil Eddiai ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Piezoelectric Material ◽  
Polyvinylidene Fluoride ◽  
Piezoelectric Element ◽  
Electrical Energy ◽  
Smart Structure ◽  
Flexible Substrates ◽  
Power Harvesting ◽  
The Past

The field of power harvesting has experienced significant growth over the past few years due to the ever-increasing desire to produce portable and wireless electronics with extended lifespans. The present work aims to introduce an approach to harvesting electrical energy from a mechanically excited piezoelectric element and investigates a power analytical model generated by a smart structure of type polyvinylidene fluoride(PVDF) that can be stuck onto fabrics and flexible substrates, although we report the effects of various substrates and investigates the sticking of these substrates on the characterization of the piezoelectric material.

scholarly journals Design of RF Energy Harvesting Circuit for Low Power Devices

2016 ◽  
Vol 4 (1) ◽  
pp. 16-19
Author(s):  
Garima Bajpai ◽  
Umesh Barandiya
Keyword(s):  
Energy Harvesting ◽  
Radio Frequency ◽  
Circuit Simulation ◽  
Electrical Energy ◽  
Alternative Methods ◽  
Signal Frequency ◽  
Rf Energy Harvesting ◽  
Input Signal Frequency ◽  
Energy Harvesting System ◽  
Rf Energy

Radio frequency (RF) energy transfer and harvesting techniques have recently become alternative methods to power the next generation wireless networks. The RF energy harvesting system was designed to convert the RF energy available in the atmosphere into useful electrical energy which can be used to charge a battery of capacity 50 uAh. This battery requires a voltage in the range of 4- 4.2V to get itself charged. In this paper we have designed and simulated a Radio Frequency (RF) energy harvesting circuit which utilized available RF energy with the voltage boosting circuit. Simulation results represents that by using matching network of high-Q, output voltage of harvesting circuit increases and it becomes more sensitive with respect to input signal frequency and value of elements used.

Design of a Hybrid Accumulator Architecture for Harvesting and Storing of Power in WSN using an Adaptive Power Organizing Algorithm

2019 ◽  
Vol 28 (08) ◽  
pp. 1950130
Author(s):  
R. Senthilkumar ◽  
G. M. Tamilselvan
Keyword(s):  
Energy Harvesting ◽  
Lithium Ion ◽  
Electrical Energy ◽  
Maximum Energy ◽  
Li Ion Battery ◽  
Solar Panels ◽  
Wide Range ◽  
Li Ion ◽  
Adaptive Power ◽  
Ultra Capacitor

Converting the harnessed energy from the environment or other energy sources to electrical energy is referred to as energy harvesting. The need of energy harvesting in wireless sensor networks is an essential issue to be handled to allow adequacy of the innovation in a wide range of utilizations. The maximum energy should be harvested from the solar panels and it should be stored and managed effectively to power the nodes in the wireless network. For this purpose, a solution proposed in this paper utilizes a hybrid accumulator architecture that combines the advantages of an effectively controlled “battery and ultra-capacitor (UC)” where the power stream from a lithium ion (Li-ion) battery is combined with a UC for power upgrade and conveyance to the stack proficiently and using a new adaptive power organizing algorithm, management of power in the battery and capacitor can be performed. The proposed design is implemented in Simulink and the results show the effect of the hybrid design.

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