Ultra-Low Wind Speed Piezoelectric Windmill

Kishore, Ravi Anant; Vučković, Dragan; Priya, Shashank

doi:10.1080/00150193.2014.875315

Cited by 26 publications

(14 citation statements)

References 14 publications

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“…In such a configuration, a rotor driven by the wind will rotate thus inducing impact on the piezoelectric cantilevers embedded around the rotating shaft. As the contact between the rotor and cantilevers causes wear, thus shortening the lifecycle of the entire harvester, the contactless configuration was then developed, as shown in Figure b. This design replaces the mechanical contacting force applied between the rotor and cantilevers with the magnetic force.…”

Section: Development Of Single‐source Energy Harvestersmentioning

confidence: 99%

Energy Harvesting Research: The Road from Single Source to Multisource

2018

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Energy harvesting technology may be considered an ultimate solution to replace batteries and provide a long-term power supply for wireless sensor networks. Looking back into its research history, individual energy harvesters for the conversion of single energy sources into electricity are developed first, followed by hybrid counterparts designed for use with multiple energy sources. Very recently, the concept of a truly multisource energy harvester built from only a single piece of material as the energy conversion component is proposed. This review, from the aspect of materials and device configurations, explains in detail a wide scope to give an overview of energy harvesting research. It covers single-source devices including solar, thermal, kinetic and other types of energy harvesters, hybrid energy harvesting configurations for both single and multiple energy sources and single material, and multisource energy harvesters. It also includes the energy conversion principles of photovoltaic, electromagnetic, piezoelectric, triboelectric, electrostatic, electrostrictive, thermoelectric, pyroelectric, magnetostrictive, and dielectric devices. This is one of the most comprehensive reviews conducted to date, focusing on the entire energy harvesting research scene and providing a guide to seeking deeper and more specific research references and resources from every corner of the scientific community.

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Section: Development Of Single‐source Energy Harvestersmentioning

confidence: 99%

Energy Harvesting Research: The Road from Single Source to Multisource

2018

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“…5 mW was extracted at 200 rpm. Similar designs with different design considerations, such as harvester configurations, magnet arrangements, operating conditions and cut‐in speed, were investigated.…”

Section: Introductionmentioning

confidence: 99%

Comparison and Scaling Effects of Rotational Micro‐Generators using Electromagnetic and Piezoelectric Transduction

Yeatman

2018

Energy Tech

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Rotational energy is widely distributed or easily acquirable from other energy sources (fluid flow, machine operation or human motion) in many industrial and domestic scenarios. At small scales, power generation from such rotational ambient sources can enable many autonomous and self‐reliant sensing applications. In this paper, three typical types of micro‐generators (energy harvesters), namely electromagnetic (EMREHs), piezoelectric resonant (PRREHs) and piezoelectric non‐resonant rotational energy harvesters (PNRREHs) are discussed and compared in terms of device dimensions and operation frequencies. Theoretical models are established for each type to calculate maximum achievable output power as a function of device dimension and operating frequency. Using these theoretical models, scaling laws are established for each type to estimate the achievable output. The EMREHs have a strong scaling effect both on device dimension (as L5) and on operating frequency (as ω2), whereas the PNRREHs are less so (L2.5ω0.5). PRREHs have a narrow band‐width as resonant harvesters, and are ideal for cases where the excitation frequency is constant. This study provides a guideline for selection and design of rotational energy harvesters (REH) when the device dimension and operating frequency are defined. The proposed scaling laws offer a convenient method to estimate the harvester performance for different dimensions and operating frequencies.

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“…1(b)] with magnetic coupling [14] have been recently investigated for piezoelectric wind energy harvesting. Kishore et al [17] present a method to decrease the cut-in speed of contactless windmills by using an extra piezoelectric bimorph as an actuator. The actuator by using an extra AC voltage source produces an alternating deflection that helps the wind turbine to overcome the static friction at low wind speed.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Piezoelectric Windmill Topology for Energy Harvesting from Low Speed Air Flows

Rezaei-Hosseinabadi

Tabesh

Dehghani

et al. 2014

IEEE Trans. Ind. Electron.

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This paper presents a topology for micro-power piezoelectric wind energy harvesting useful for developing selfpowered wireless sensor nodes. The features of the proposed topology compared with the existing piezoelectric/electromagnetic topologies are: (i) delivering power at high-voltage levels particularly at low-speed air-flows; (ii) starting operation at low cut-in speeds (about 1 m/s); and (iii) robust structure for operating at high-speed wind flows practically tested up to 20 m/s. The proposed topology consists of a small fan with embedded permanent magnets (PMs) and a piezoelectric beam with a PM proof mass which interacts with the PMs in the fan to harvest wind power. The paper also presents an analytical model and a design procedure to determine the number of PMs in the fan and their arrangements to maximize the captured power and minimize the cut-in speed. Using a prototype of the proposed topology, it is shown that the device starts capturing wind power at the wind speeds above 0.9 m/s. It is also shown that the suggested topology is at least 10% more efficient than the existing topologies in using piezoelectric materials and its total volume power density is higher than the other topologies.

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Ultra-Low Wind Speed Piezoelectric Windmill

Cited by 26 publications

References 14 publications

Energy Harvesting Research: The Road from Single Source to Multisource

Energy Harvesting Research: The Road from Single Source to Multisource

Comparison and Scaling Effects of Rotational Micro‐Generators using Electromagnetic and Piezoelectric Transduction

An Efficient Piezoelectric Windmill Topology for Energy Harvesting from Low Speed Air Flows

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