So I definitely owe you guys an update. Sorry for being late. FYI the following update isn’t the best news…
Bottom line up front is that the 2-board design in both the serious and little FOCers has some issues at high currents. I believe it’s only an issue with the PCB design and not the components being used. It’s unfortunate that this is the case after all this time and work…but I have a plan.
Some of you know about the Cheap FOCer 2 which is another project of mine. My plan is to base the new Little FOCer (84V, 5kW) on this design. It’s basically going to be a 84V version of the Cheap FOCer 2. The Serious FOCer (84V, 10kW) will then just be a beefier version with TO-247 FETs.
I’ve already done some bench testing of similar new single-board designs with satisfactory results. The 10kW controller did 100A FOC easy. The 5kW design did 75A. The only reason I can’t test higher is due to my own bench testing limitations. I still have to go through another round of prototyping so this will take some more time…
I apologize for all this…but I’m not giving up! It’s just going to take some more time for me to crank out a design I am fully confident in. Quality is still a major concern for me and I will not release something I consider inferior.