4.4 Article

Investigation on a broadband magnetic levitation energy harvester for railway scenarios

Journal

Publisher

SAGE PUBLICATIONS LTD
DOI: 10.1177/1045389X211026383

Keywords

Magnetic levitation; renewable energy; broadband; FFD; railroad vibration

Funding

  1. National Natural Science Foundation of China [52008343]
  2. Chongqing Science and Technology Bureau [cstc2019jscx-gksbX0148]
  3. Chongqing Municipal Education Commission [KJCX2020006]

Ask authors/readers for more resources

A Magnetic Levitation Energy Harvester (MLEH) was designed and tested in this study, showing effectiveness in powering rail-side sensors. The device demonstrated a broadband response and had a wide range of output power in sweeping-frequency vibration tests.
In this study, a Magnetic Levitation Energy Harvester (MLEH) was designed and fabricated. The magnetic field distribution and power generation performance of multiple cylindrical magnets were studied. The full factorial design (FFD) of L-20 (2(2) x 5) test was carried out with the sliding magnet arrangement, coil arrangement and wiring method as the control factors, and the output power as target factor. Sweeping-frequency vibration tests and railroad spectrum random vibration tests were conducted to verify the power generation capacity of the prototype. Experimental results show that the device has a broadband response and the railroad vibration test proves the effectiveness of harvester in the application scenario for powering the rail-side sensors. The range of maximum output voltage, power and corresponding frequency in sweeping-frequency vibration tests with the amplitude of 1 to 10 mm and frequency of 5 to 50 Hz are 1.5 to 4.5 V; 1.80 to 17.0 mW and 9.7 to 30.8 Hz. The maximum output voltage and power are 1.33 V and 1.47 mW based on the measured railroad spectrum. Finally, a retrospective review in the efficiency, effectiveness and volume figure of merit is conducted to evaluate the performance of MLEH, indicating a high power density of the proposed harvester.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.4
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available