Power Regulative Triboelectric-Electromagnetic Hybrid Generator for Light Air Harvesting

Abstract

Relying on a triboelectric-electromagnetic hybrid generator (TEHG) offers the potential to harness wind energy. However, due to the significant fluctuations in wind energy, efficient harvesting remains challenging. A power regulative triboelectric-electromagnetic hybrid generator (PR-TEHG) is proposed in this work. The PR-TEHG achieves regulated power output by coupling an energy management circuit and a mechanical regulation structure. Mechanical energy is stored and released energy for use in an electromagnetic generator (EMG) through a mechanical regulation structure, and a triboelectric nanogenerator (TENG) with an energy management circuit is used for power generation during the mechanical energy storage stage. By integrating wind-induced vibrations with a store-and-release mechanism, the PR-TEHG effectively overcomes the issue of irregular power output under light wind conditions. The experimental results show that PR-TEHG can be driven by light air and the total output power remains at 88.3 mW. Compared to TENG and EMG alone, PR-TEHG increases 56 times and 658 times. This study presents a novel approach for efficiently harnessing light air and breeze to power diverse sensors. It presents broad application prospects in wind energy development and Internet of Things.

Keywords: triboelectric-electromagnetic hybrid generator, bluff body blade, power regulation, light air harvesting