Simple 1/3 phase inverter with PFC

The control element is very similar to the xns15s93f6 system, which is often popular in cheap frequency converters from a friend of mine. I am about to present such equipment in the article.
It was with such a system that I noticed strong vibrations of the motors at a lower frequency, maybe a similar phenomenon can be seen in your first video?

DJ MHz wrote:

Control element very similar to the xns15s93f6 system,

Thanks for the info. I went this route and found the XNS25S12FT 1200V 25A ipm module for a edible price. If I manage to buy it, I will use it for the inverter for the 1f engine.