Investigation on a broadband magnetic levitation energy harvester for railway scenarios
Source abstract
Abstract
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 × 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.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Innovative Energy Harvesting Technologies · Wireless Power Transfer Systems · Energy Harvesting in Wireless Networks
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Engineering and Technology, Southwest University, Chongqing, China
National & Local Joint Engineering Laboratory of Intelligent Transmission and Control Technology, Chongqing, China
School of Civil Engineering, Southwest Jiaotong University, Chengdu, China
Key Laboratory of High-speed Railway Engineering, Ministry of Education, Chengdu, China
College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing, China
School of Mechatronical Engineering, Beijing Institute of Technology, Beijing, China
School of Engineering, College of Engineering and Computer Science, The Australian National University, Canberra, Australian Capital Territory, Australia
Funding
National Natural Science Foundation of China · Chongqing Municipal Education Commission
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