Energy harvester in use

Practical test

To demonstrate the performance of our technology, we built a functional prototype of our energy harvester and tested it under realistic conditions.

Test structure

The harvester was attached to the leg like a wristwatch and stimulated by the translational movement of the leg on a treadmill.

Measurement Results

After just over 10 minutes, the capacitor in the EH300 Energy Controller Module was charged to a voltage of 3 volts.

With a capacitance of 1 mF (millifarad), this results in a stored energy of:

E = ½ · C · U² = ½ · 0.001 F · (3 V)² = 4.5 mJ

The charging time was 600 seconds, which corresponds to an average electrical power of:

P = E / t = 4.5 mJ / 600 s = 7.5 µW

 


Conclusion

This demonstrator impressively shows how mechanical energy from natural movements can be converted into electrical energy – completely without an external power source.
This opens up a wide range of application possibilities in wearables, self-powered IoT devices, and medical technologies.