Is there any proven, simple method to protect a power supply from overvoltage produced by BEMF if a motor is turned manually? What I am thinking of is a small battery or a capacitor, but I am not sure if that is sufficient. Also, Lithium based batteries will require some charging circuit, which is totally new to me while Lead acid batteries would be very bulky.
I am using two B-G431B-ESC1 as controllers/drivers, which have overvoltage protection on the input, but apparently, that triggers to late for the PSU it is attached to. No problems though with my (cheap) lab power supply. Due to the given driver boards, I cannot easily change the circuitry, I can only attach something between the boards and the PSU. In principle, the driver boards would also be capable of detecting BEMF and I could use that information to control a MOSFET or so, but sensing BEMF is currently not supported by SimpleFOC and I don’t want to dig deeper into the ADC related code since all that stuff seems to be a bit under cosntruction in SimpleFOC right now.
A good alternative could also be links to 24V PSUs >150W, which are known to be reasonanbly tolerant against regeneration.
Thanks for any advice!