Theoretical comparison of the energy harvesting capability among various electrostatic mechanisms from structure aspect

Lee, Chengkuo; Lim, Ye Mei; Yang, Bin; Kotlanka, Rama Krishna; Heng, Chun-Huat; He, Jiating; Tang, Min; Xie, Jin; Feng, Hua

doi:10.1016/j.sna.2009.02.024

Cited by 58 publications

(39 citation statements)

References 26 publications

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“…The energy efficiency of the sources used in the EH is very different. For photovoltaic sources operating in open air, the capacity is estimated at approximately 15,000 μW/cm 3 and rapidly decreases to about 20 μW/cm 3 for indoor facilities [11]. The expected capacity levels of mechanical vibration or air flow as a source of energy (which uses the piezoelectric effect) are of the order of 300 μW/cm 3 , which can be very attractive in future power systems.…”

Section: Possible Sources Of Energy Used In the Eh Assessment Of Thementioning

confidence: 99%

“…In this group we distinguish three main phenomena: the piezoelectric, electrostatic, and electromagnetic (magnetic induction) ones. The first two phenomena can be used in the construction of micro-scale generators; the third one is used in generators with significantly larger overall dimensions [11,21]. Analyzing the mechanical structures of EH generators, we can distinguish two dominant structures.…”

Section: Phenomena Using Kinetic Energymentioning

confidence: 99%

“…Independence of the generator from the need for an external power source may be possible with a system comprising electrets, instead of using an air capacitor [11,13]. This results in the direct conversion of the mechanical energy into the electrical energy without an additional external energy source.…”

Section: Electrostatic Generatorsmentioning

confidence: 99%

See 2 more Smart Citations

Survey of Energy Harvesting Systems for Wireless Sensor Networks in Environmental Monitoring

Dziadak

Makowski

Michalski

2016

Metrology and Measurement Systems

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Wireless Sensor Networks (WSNs) have existed for many years and had assimilated many interesting innovations. Advances in electronics, radio transceivers, processes of IC manufacturing and development of algorithms for operation of such networks now enable creating energy-efficient devices that provide practical levels of performance and a sufficient number of features. Environmental monitoring is one of the areas in which WSNs can be successfully used. At the same time this is a field where devices must either bring their own power reservoir, such as a battery, or scavenge energy locally from some natural phenomena. Improving the efficiency of energy harvesting methods reduces complexity of WSN structures. This survey is based on practical examples from the real world and provides an overview of state-of-the-art methods and techniques that are used to create energyefficient WSNs with energy harvesting.

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Section: Possible Sources Of Energy Used In the Eh Assessment Of Thementioning

confidence: 99%

Section: Phenomena Using Kinetic Energymentioning

confidence: 99%

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Survey of Energy Harvesting Systems for Wireless Sensor Networks in Environmental Monitoring

Dziadak

Makowski

Michalski

2016

Metrology and Measurement Systems

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“…[10][11][12][13][14] • Electrostrictive cycles, using charge and discharge operations. 9,[15][16][17] • Pseudo-piezoelectric cycles, consisting in applying a bias voltage on the material and working around this static regime.…”

Section: Energy-harvesting Techniquesmentioning

confidence: 99%

Electrostrictive polymers for mechanical energy harvesting

Lallart

Cottinet

Guyomar

et al. 2012

J Polym Sci B Polym Phys

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This article reviews the developments in electrostrictive polymers for energy harvesting. Electrostrictive polymers are a variety of electroactive polymers that deform due to the electrostatic and polarization interaction between two electrodes with opposite electric charge. Electrostrictive polymers have been the subject of much interest and research over the past decade. In earlier years, much of the focus was placed on actuator configurations, and in more recent years, the focus has turned to investigating material properties that may enhance electromechanical activities. Since the last 5 years and with the development of low-power electronics, the possibility of using these materials for energy harvesting has been investigated. This review outlines the operating principle in energy scavenging mode and conversion mechanisms behind this generator technology, highlights some of its advantages over existing actuator technologies, identifies some of the challenges associated with its development, and examines the main focus of research within this field, including some of the potential applications. KEYWORDS: actuators; dielectric properties; electrostrictive polymers; energy harvesting; ferroelectricity; nanoparticles INTRODUCTION The performance of energy harvesters is directly linked to the efficiency of the mechanical-electrical conversion within the active materials. For piezoelectric materials, the efficiency of the conversion can be estimated with the help of the coupling coefficient. For a given vibration mode, this coefficient expresses the ratio of the converted energy to the input one. Another key point for electroactive materials concerns the easiness of their integration within the whole structure.

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“…The electrostatic devices are primarily made up of silicon by the means of semiconductor fabrication technology such that it facilitates CMOS integration. In another point of view, electrostatic energy harvesters could be a way for figuring out self-powered integrated circuits as an onchip power source [5]. However, because of the air damping effect, the two plates of electrodes cannot come to contact so as to reach the maximum capacitance state in the electrostatic energy harvesters.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Behavior of A MEMS Based Capacitive Energy Harvester

Azizi

Rahimpour

Rad

2017

KJAR

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Energy harvesting is defined as a technology that converts the available excess energy in the environment into usable energy for low power consuming electronics. Past researches on vibration energy harvesting has focused mainly on the use of magnets or piezoelectric materials as the basis of energy transduction. This paper presents a new design for extracting energy using an electrostatic capacitive energy harvester which can be considered as a combination of charge constrained and voltage constrain cycles. In previous analyses, the constant charge and constant voltage operation were studied separately, but in this work both of these operations have been studied in a combination with each other. In this paper, the variable capacitor is formed by an out of plane gap closing structure. In order to investigate the mechanical behaviour of the capacitive energy harvester, a rectangular micro plate is considered with geometrical and material properties. Due to the nonlinearity and low displacement amplitude that result from electrostatic force, energy can be generated. In order to study the primer factors for increasing generated energy, geometrical parameters of the system have been changed. Time history of the shuttle mass and micro-plate undergone vibration are illustrated. It must be noted that after several cycle vibration of the plate, it reaches to stability and regular cycles.

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Theoretical comparison of the energy harvesting capability among various electrostatic mechanisms from structure aspect

Cited by 58 publications

References 26 publications

Survey of Energy Harvesting Systems for Wireless Sensor Networks in Environmental Monitoring

Survey of Energy Harvesting Systems for Wireless Sensor Networks in Environmental Monitoring

Electrostrictive polymers for mechanical energy harvesting

Mechanical Behavior of A MEMS Based Capacitive Energy Harvester

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