The entire prototype is 3D-printed, except for the wave generator bearings and stepper motor, and put to the test. As the video below shows after the excellent introduction to harmonic drives ...

With less than 3% harmonic distortion, no transients or voltage spikes on load rejection, the 32 kW Power Generator offers clean, brushless three-phase power. Equipped with a permanent magnet ...

On the other hand, if you want the generator outside or you're not picky ... it refers to the amount of harmonic distortion ...