High Performance Human-Induced Vibration Driven Hybrid Energy Harvester For Powering Portable Electronics

This work demonstrates a hybrid energy harvester that uses a dual Halbach magnet array combined with a magnetically floated electromagnetic–triboelectric design to convert human-induced motion into electrical energy. The design incorporates a Halbach magnet array, nanostructured PTFE, Al-nano-grass, and magnetic springs to achieve very high generated powers.

• Development of a hybrid energy harvester with a dual Halbach magnet array and magnetic flotation.
• High power generation from low-frequency human-induced motion.
• Use of nanostructured materials and magnetic springs to enhance performance.
• Demonstrated significantly higher power density compared to similar works.

A prototype of the hybrid energy harvester was fabricated and tested using both a vibration exciter and human-induced motion (handshaking, walking, slow running). The output current and power were measured to evaluate its performance.

The harvester delivered a high output power of 10.07 mW, corresponding to a volume power density of 344 W/m³ at a resonant frequency of 4.5 Hz and 0.6 g acceleration. It generated significant power from human motions (up to 5.8 mW from handshaking), showing its potential for powering portable electronics.