Magnetic Frequency Tuning of a Shape Memory Alloy Thermoelectric Vibration Energy Harvester
Ivo Yotov, Georgi Todorov, Todor Gavrilov, Todor Todorov · MDPI AG · 2025
This study explores a shape memory alloy-based energy harvester that converts thermal energy into electrical energy through mechanical oscillations.
Plain English summary
Why this matters
Key findings
- The harvester's bending vibration frequency increased from 8.3 Hz to 9.2 Hz with the use of permanent magnets.
- Output power improved from 1.9 µW to 8.18 µW at a heater temperature of 70 °C.
- The harvester can operate at cryogenic temperatures.
- The study confirmed findings through multiphysics dynamic simulations.
- The configuration allows for autonomous vibrations due to thermal expansion and contraction.
What's new
The integration of magnetic weights and permanent magnets to tune the frequency of a shape memory alloy-based energy harvester is a new approach.
Limitations
The abstract does not provide details on the scalability or practical deployment of the energy harvester.
Commercial context
The technology is still in the experimental phase and has not yet been commercialized.
Publication
- Publisher
- MDPI AG
- Publication date
- June 25, 2025
- Research type
- Paper
- License
- https://creativecommons.org/licenses/by/4.0/
Tags
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