Hi,
Thank you for developing and sharing that code, Mark. I'll try it on one of my minis.
I want to make a VFD some day, and this might be a good start.
Perhaps to control the v/f ratio a good idea might be to have a potentiometer which the arduino reads to set the frequency and a TL494 (or SG3525 or other dc converter controller) also uses it but to control the DC rail voltage, hence using less processor power.
Or, if the v/f ratio is included in the code, three dc converter controllers could be fed with one properly filtered phase each into their reference inputs so as to tightly control the generated voltages on the inverter.
A next step would be joining an mppt algorithm with a vfd motor drive, to power water pumps with the sun.
Id like to make those things one day but I wouldn't mind of you want to develop and share those answers anyway haha
I'll keep on working on building my mpp tracker first, though. Maybe I'll post about it when finished.
Regards,
Willy