Electromagnetic Wind Energy Harvester for Condition Monitoring System of High-Speed Train Bogies

The abundant wind energy around high-speed trains can be used as an energy source for self-powered systems when they are in operation. However, wind energy harvesters installed on trains have been less studied in the past. In this paper, a rotating-mode electromagnetic wind energy harvester is proposed for a wireless condition monitoring in high-speed train bogie. The harvester uses an S-rotor, which is driven by the high-speed wind, and the rotor drives the relative motion between the magnet and the winding coil, and then converting wind energy into electrical energy. Theoretical analysis and experiments were conducted on the harvester. The experimental results show that the electromagnetic wind energy harvester achieves an output power of 39.01 mW at a wind speed of 20 m/s and a load of 400 Ω. It proves that the electromagnetic wind energy harvester has the potential to be an energy supply device for self-powered technology based on the wind energy harvesting mechanism.