Energy Harvesting

Daukševičius, Rolanas; Briand, D.

doi:10.1002/9783527679249.ch21

Cited by 4 publications

(5 citation statements)

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“…Manmade sources of mechanical energy (e.g., machinery, infrastructures, and transportation) can emit high levels of harmonic vibrations or low levels of random vibrations, these last ones being challenging to harvest efficiently. Moreover, natural mechanical energy is usually related to vibrations induced by wind or water flow [8]. EH from wind and water are well-developed and worldwide implemented technologies as alternative sources for largescale electrical production.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Electromagnetic Vibration Energy Harvesting in Water Distribution Control Valves

et al. 2021

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Control stations of a water distribution system monitor several variables such as the pressure, the flow, and the quality of water. For these monitoring tasks, wireless sensor networks with ultra-low power consumption powered by vibration-based energy harvesters as an alternative to the usage of batteries or wired connections might be a suitable option in these facilities. This article investigates the potential applicability of an electromagnetic vibration energy harvester prototype in different control valves of a water distribution system in the province of Barcelona by means of experimental measurements and numerical simulations. The low-amplitude vibration with random excitation is measured with piezoelectric accelerometers in three control valves under normal operating conditions to process each signal and determine the dominant frequency in the complete spectrum, which is found to be in the order of magnitude of kHz, and the dominant frequency in the range of 10 to 100 Hz, where commercial harvesters normally operate. Numerical simulations of the harvester prototype are conducted in all cases with the same materials, geometries, and coil parameters, generating a maximum RMS load voltage and output power when the harvester's natural frequency matches the dominant frequencies of each vibration signal. The maximum output power estimated in these simulations is 1573.04 nW with a corresponding RMS load voltage of 53.6 mV and optimal load resistance of 1830 Ω.

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Section: Introductionmentioning

confidence: 99%

Investigation on Electromagnetic Vibration Energy Harvesting in Water Distribution Control Valves

et al. 2021

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“…Harvesting energy from mechanical vibrations that would otherwise be dissipated or wasted presents two main advantages with respect to the other alternative energy sources. First, vibrations are abundant in natural and built environments, including civil infrastructure and industrial facilities, which enables the installation of vibration-based generators in both outdoor and indoor applications [9]. Second, vibrations can be continuously harnessed, in most cases, because they are not affected by weather conditions, and their harvesting is less restricted in terms of time and device placement [10].…”

Section: Background Of the Researchmentioning

confidence: 99%

“…On the one hand, there have been significant advances in expanding the frequency bandwidth over which an EMVEH can perform efficiently or in tuning its resonance frequency to match the dominant frequency of input vibration, with several strategies having emerged: mechanical tuning methods, electrical tuning methods, multimodal configurations, and nonlinear configurations [33][34][35]. Still, these improvements are associated, in most cases, with design and assembly complications, resulting in an overall increase in production costs [9]. On the other hand, numerous EMVEH designs have been developed with the main focus on enhancing the harvester performance, i.e., maximizing the power generation capability, improving the conversion efficiency, or increasing the power density.…”

Section: Justification Of the Researchmentioning

confidence: 99%

“…Manmade sources of mechanical energy, e.g., machinery, infrastructure, and transportation, can emit high levels of harmonic vibrations or low levels of random vibrations, the latter being particularly challenging to harvest efficiently. Moreover, natural mechanical energy is usually related to vibrations induced by wind or water flow [9]. Energy harvesting from wind and water are well-developed and widely implemented technologies as alternative sources for large-scale electrical production.…”

Section: Introductionmentioning

confidence: 99%

“…Comparison of the three main VEH transducer mechanisms. This information was compiled from the works presented in[5,8,9,11,20].…”

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confidence: 99%

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A high-performance electromagnetic vibration energy harvester based on ring magnets with Halbach configuration: design, optimization, and applications

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Electromagnetic vibration energy harvesting is a relatively modern technology that has received relevant attention in the last decade from the research community and industry as a potential complement or alternative to the inconvenient employment of batteries for powering ultra-low-power devices, microelectromechanical systems, and wireless sensor networks. However, there are still many flaws in this technology that require to be addressed to develop truly practical, reliable, and cost-effective electromagnetic generators, without which industries can still not avoid relying primarily on batteries for powering wireless devices. This dissertation is mainly concerned with developing a high-power, compact, and yet simplified electromagnetic vibration energy harvester capable of reaching high power density levels without the necessity of a complex design, which is generally accompanied by an increment in fabrication costs. For this purpose, a ring-shaped magnet structure consisting of three ring magnets in a linear Halbach configuration is proposed in the present thesis. This particular structure is also compared, in terms of their output performance, with several ring magnet arrangements that include single magnets, double magnet arrays, and an alternative Halbach configuration to determine the actual benefits of the employed Halbach array within the proposed architecture. Also, the coil-magnet parameters of the selected transducer have been further optimized, mainly as a function of the inner radius, the height, and the wire diameter of the coil, to maximize its power generation. Besides, a harvester prototype based on the proposed configuration has been fabricated to validate the modeling strategy used and to certify the reliability of the proposed design regarding its power generation capabilities. The results of the power density normalized to the square of the excitation amplitude obtained for the optimized device and the fabricated prototype are found to be significantly higher than the ones associated with devices described in the literature for similar applications. Furthermore, the proposed electromagnetic generator has been tested and simulated in the framework of two industrial applications to determine its feasibility and output performance: a railway tunnel and a water distribution system. In both cases, the most relevant characteristics of the site under evaluation and the field test setup employed for data acquisition are thoroughly described. The field test measurements and overall results are presented and discussed together with the performance simulations obtained for various scenarios, including different significant natural frequencies of the harvester and several locations of particular interest. Results demonstrate that the applicability of the proposed electromagnetic harvester in the context of underground railway systems is feasible, even for non-usual locations subjected to low vibration amplitudes. Also, for the case of water distribution systems, in which the vibration levels are extremely low, the output performance results of the proposed generator are found promising. La recolección de energía de vibración mediante transductores electromagnéticos es una tecnología relativamente moderna que ha recibido especial atención en la última década por parte de la comunidad científica e industrial como una potencial alternativa al uso de baterías para alimentar dispositivos de ultra baja potencia, sistemas microelectromecánicos y redes de sensores inalámbricos. Sin embargo, existen aún muchas problemáticas en esta tecnología que requieren ser atendidas para poder desarrollar generadores electromagnéticos realmente prácticos, confiables y económicos, necesarios para proveer a la industria de una solución confiable que permita no depender primordialmente de las baterías para alimentar dispositivos inalámbricos. Esta tesis doctoral se enfoca fundamentalmente en el desarrollo de un recolector de energía de vibración mediante transducción electromagnética, de alta potencia, compacto y simplificado, capaz de alcanzar altos niveles de densidad de potencia generada sin la necesidad de un diseño complejo, el cual, generalmente, viene acompañado de un incremento de los costes de fabricación. Para este propósito, esta tesis propone una estructura magnética formada por tres imanes anulares en configuración Halbach lineal. Para determinar los beneficios reales de la configuración Halbach empleada dentro de la arquitectura propuesta, esta estructura en particular se compara, en términos de rendimiento de salida, con varias configuraciones de imanes anulares: un único imán, dos imanes y una configuración Halbach alternativa. Además, los parámetros del sistema bobina-imán del transductor seleccionado han sido optimizados, principalmente en función del radio interno, la altura y el diámetro del cable de la bobina, para maximizar su generación de potencia. Adicionalmente, se ha fabricado un prototipo de recolector de energía basado en la configuración propuesta para validar la estrategia de modelado utilizada y certificar la fiabilidad del diseño propuesto con respecto a su capacidad de generación de energía. Los resultados en términos de densidad de potencia normalizada por cuadrado de la amplitud de excitación, obtenidos para el dispositivo optimizado y el prototipo fabricado, son significativamente más altos que los asociados con dispositivos descritos en la literatura para aplicaciones similares. Finalmente, el generador electromagnético propuesto ha sido probado y simulado en el marco de dos aplicaciones industriales para determinar su aplicabilidad y eficiencia en situaciones reales. Concretamente, la aplicaciones escogidas han sido un túnel ferroviario y un sistema de distribución de agua. En ambos casos, las características más relevantes del emplazamiento de estudio y la configuración de los ensayos de campo desarrollados para la adquisición de datos son descritas minuciosamente. Las medidas de campo y los resultados generales se presentan y discuten junto con las simulaciones de rendimiento de salida obtenidas para distintos escenarios, incluyendo diferentes frecuencias naturales significativas del dispositivo y varias locaciones de particular interés. Los resultados demuestran que la aplicabilidad del recolector de energía de vibración mediante transducción elec-tromagnética propuesto en el contexto de los sistemas ferroviarios subterráneos es factible, incluso para lugares no habituales sujetos a bajas amplitudes de vibración. Para el caso de los sistemas de distribución de agua, aunque los niveles de vibración obtenidos experimetales son extremadamente bajos, los resultados de rendimiento de salida del generador propuesto son prometedores.

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A high-performance electromagnetic vibration energy harvester based on ring magnets with Halbach configuration

Ordoñez

Villamarín

Romeu

2022

Energy Conversion and Management: X

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Energy Harvesting

Cited by 4 publications

References 230 publications

Investigation on Electromagnetic Vibration Energy Harvesting in Water Distribution Control Valves

Investigation on Electromagnetic Vibration Energy Harvesting in Water Distribution Control Valves

A high-performance electromagnetic vibration energy harvester based on ring magnets with Halbach configuration: design, optimization, and applications

A high-performance electromagnetic vibration energy harvester based on ring magnets with Halbach configuration

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