Estimation of the Influence of Self-Induction on the Efficiency of an Electromagnetic Vibration Energy Harvester with Two Freely Moving Magnets

Аннотация

In this paper investigates the influence of selfinduction on the output characteristics of an electromagnetic vibration energy harvester with two freely moving magnets. In many studies, this effect is either ignored or not considered. However, in resonant vibration harvesters, at high-frequency and high-amplitude excitation, the change in current in the coil becomes significant, which leads to a pronounced effect of selfinduction. To evaluate this effect, a mathematical model that takes self-induction into account was developed, and numerical simulations were performed. A laboratory prototype was also manufactured and tested. A comparison of the results showed good agreement between the calculations and the experimental data. It was found that the maximum output power is achieved at the resonance frequency of the prototype. In this mode, the harvester generates up to 4.75 mV of voltage and 3.4 mA of current at a …

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DOI: 10.1109/EEPS68057.2025.11351862

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Название: 2025 5th IEEE International Conference on Energy Engineering and Power …

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