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首页> 外文期刊>Energy Conversion & Management >Exploiting ultralow-frequency energy via vibration-to-rotation conversion of a rope-spun rotor
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Exploiting ultralow-frequency energy via vibration-to-rotation conversion of a rope-spun rotor

机译：利用绳索旋转转子的振动转换开采超低频率

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摘要

Ultralow-frequency kinetic energy mainly in the form of vibrations is omnipresent in the environment, but its effective exploitation remains a challenge. To tackle this problem, this paper presents a rope-spun rotor structure to transform ultralow-frequency vibrations/linear motions to rapid rotations through a piece of rope. The superior performance of the rotor is demonstrated by applying it to electromagnetic energy harvesting from ultralow-frequency vibrations and irregular human body motions. When the rope-spun rotor based harvester is periodically pushed down 10.5 mm at 1.5 Hz, it produces 9.7 mW electric power. When embedded in a shoe insole, the harvester delivers 8 mW power to a matched load as a male participant walks with the shoe at 6.5 km/h. When positioned under a piece of floorboard, the harvester can charge a supercapacitor (220 mF) from 0 to 3.5 V within 8 min. The harvester can also sustain the continuous operation of multiple electronics simultaneously by scavenging energy from gentle finger tapping motions. This study demonstrates a new mechanism for realizing vibration-to-rotation conversion and a promising way for efficient harvesting of ultralow-frequency energy.
机译：超级频率动能主要以振动的形式是环境中的全部，但其有效的剥削仍然是一个挑战。为了解决这个问题，本文提出了一种绳索 - 旋转转子结构，以通过一块绳索变换超级频率振动/线性运动来快速转动。通过将来自超级频率振动和不规则人体运动的电磁能量收获来证明转子的优异性能。当基于绳子的转子的收割机周期性地向下推下10.5毫米时，它产生9.7 MW电力。当嵌入鞋子鞋垫时，收割机将8兆瓦的电源传递给匹配的负载，因为男性参与者在6.5 km / h鞋带。当定位在一块地板下时，收割机可以在8分钟内从0到3.5 V的超电容器（220mF）充电。通过从温和的手指攻丝运动中清除能量，收割机还可以同时维持多种电子的连续操作。该研究表明了一种实现振动到旋转转换的新机制以及用于高效收获超级频率能量的有希望的方式。

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