TRIBOELECTRIC-ELECTROMAGNETIC HYBRID ENERGY HARVESTING BEARINGS FOR EFFICIENT, SELF-POWERED DEVICES

Date

2024-12-25

Author

Cugunlular, Murathan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

101
views

0
downloads

Cite This

Energy harvesting is a sustainable approach for powering self-sufficient systems, addressing the growing demand for smart and portable devices. This thesis presents a rolling freestanding triboelectric-electromagnetic hybrid energy harvesting bearing (HEH-bearing), in which triboelectric nanogenerators (TENGs) and electromagnetic generators (EMGs) are integrated to efficiently convert mechanical energy into electrical power. The HEH-bearing, designed for mechanical systems, replaces or complements traditional bearings while reducing friction and wear. By combining neodymium magnet-embedded rollers and triboelectric layers, the HEH-bearing optimizes both triboelectric and electromagnetic energy harvesting. The HEH-bearing achieved a maximum power output of 0.94 W from the EMG component and 0.43 mW from the TENG component, with a combined power density reaching 250 mW/m2. The system demonstrated its ability to power up to 236 LEDs at 200 RPM, charge a smartphone using a power management circuit and operate a humidity and temperature sensor with wind energy. The capabilities of the device demonstrate the HEH-bearing's potential as a scalable and efficient solution for diverse applications, including industrial systems and renewable energy systems, paving the way for advanced self-powered technologies.

Subject Keywords

Triboelectric nanogenerators, Electromagnetic generators, Hybrid energy generators, Mechanical energy harvesting

URI

https://hdl.handle.net/11511/113399

Collections

Graduate School of Natural and Applied Sciences, Thesis