Mr. Yu Pan Profile

Yu Pan

at Virginia Polytechnic Institute and State Univ

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Proceedings Article | 27 March 2018 Presentation + Paper

A compact ball screw based electromagnetic energy harvester for railroad application

Yu Pan, Teng Lin, Cheng Liu, Jie Yu, Jianyong Zuo, Lei Zuo

Proceedings Volume 10599, 105990F (2018) https://doi.org/10.1117/12.2297284

KEYWORDS: Energy harvesting, Mechanical efficiency, Sensors, Motion models, Resistors, Mechanical engineering, Energy efficiency

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To enable the smart technologies, such as the positive train controls, rail damage detection and track health monitoring on the railroad side, the electricity is required and in needed. In this paper, we proposed a novel ball-screw based electromagnetic energy harvester for railway track with mechanical-motion-rectifier (MMR) mechanism, to harvest the energy that usually dissipated and wasted during train induced track vibration. Ball screw based design reduces backlash during motion transmission, and MMR nonlinear characteristics with one way clutches makes the harvester convert the bi-direction track vibration into a generator’s unidirectional rotation, which improves the transmission reliability and increases the energy harvesting efficiency. A systematic model combining train-rail-harvester was established to analyze the dynamic characteristic of the proposed railway energy, and lab and in-field tests were carried out to experimentally characterize the proposed energy harvester. In lab bench test showed the proposed harvester reached a 70% mechanical efficiency with a high sensitivity to the environment vibration. In filed test showed that a peak 7.8W phase power was achieved when a two marshaling type A metro train passed by with a 30 km/h.

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