Enhancing the energy conversion efficiency of dielectric elastomer generators via elastic energy storage and recovery

IF 10.1 1区工程技术 Q1 ENERGY & FUELS

Applied Energy Pub Date : 2024-11-20 DOI:10.1016/j.apenergy.2024.124854

Zhong Wang , Chao Tang , Yixin Wang , Liang Zhou , Xuguang Dong , Songwen Jiang , Yiyi Pan , Xin-Jun Liu , Huichan Zhao

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引用次数: 0

Abstract

Small-scale wind energy harvesters have promising applications in driving low-power sensors, lighting, robots, and other appliances. However, traditional electromagnetic generators face challenges in small-size harvesters and at low frequencies. Dielectric elastomer generators (DEGs) can achieve energy harvesting under small deformation and have the potential for miniaturization. Inspired by the elastic energy storage and recovery mechanisms observed in biological tendons and muscles, we proposed a methodology to enhance the energy conversion efficiency of DEGs. By establishing an electro-mechanical model for calculating the energy flow during the energy harvesting process, we systematically investigated the principles of DEG energy harvesting under different situations and the role of elastic energy storage and recovery in improving efficiency. Building upon this theoretical foundation, we designed a small wind turbine with a 6 cm rotor diameter and achieved energy harvesting at a low wind speed of

1.57 \pm 0.07 m/s

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通过弹性能量储存和回收提高介电弹性体发电机的能量转换效率

小型风能收集器在驱动低功率传感器、照明、机器人和其他电器方面有着广阔的应用前景。然而，传统的电磁发电机在小型风能收集器和低频方面面临挑战。介电弹性体发电机（DEG）可以在小变形的情况下实现能量收集，并具有微型化的潜力。受在生物肌腱和肌肉中观察到的弹性能量存储和恢复机制的启发，我们提出了一种提高介电弹性体发电机能量转换效率的方法。通过建立计算能量收集过程中能量流的机电模型，我们系统地研究了不同情况下 DEG 能量收集的原理，以及弹性能量存储和恢复在提高效率方面的作用。在此理论基础上，我们设计了一个转子直径为 6 厘米的小型风力涡轮机，并在 1.57±0.07m/s 的低风速下实现了能量收集。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Energy 工程技术-工程：化工

CiteScore

21.20

自引率

10.70%

发文量

1830

审稿时长

41 days

期刊介绍： Applied Energy serves as a platform for sharing innovations, research, development, and demonstrations in energy conversion, conservation, and sustainable energy systems. The journal covers topics such as optimal energy resource use, environmental pollutant mitigation, and energy process analysis. It welcomes original papers, review articles, technical notes, and letters to the editor. Authors are encouraged to submit manuscripts that bridge the gap between research, development, and implementation. The journal addresses a wide spectrum of topics, including fossil and renewable energy technologies, energy economics, and environmental impacts. Applied Energy also explores modeling and forecasting, conservation strategies, and the social and economic implications of energy policies, including climate change mitigation. It is complemented by the open-access journal Advances in Applied Energy.