I have a motor that draws a max continuous current of 60A, but has a peak in-rush draw over 120A for a few milliseconds. I want to power the motor using a DC-DC converter.
I purchased a converter that has a peak output of 60A and tested it with the motor. It worked, but there was a long wind-up before the motor achieved its required torque. Turns out the converter has a built-in mechanism to prevent in-rush current so we were not getting the instantaneous torque we wanted.
I was thinking of purchasing a supercapacitor bank and connecting it in parallel to the converter's output. My understanding is that the converter will slowly charge up the caps initially, and as the motors start-up, it will draw the in-rush current from the capacitor bank. Once the motor reaches its steady-state current draw, the DC-DC converter will be able to supply that and top-up the capacitors.
I am asking to see if my thought process is correct or is there something I am missing or have to be careful when designing/testing. With regards to the details, I will make sure that the capacitors and DC-DC converter are spec'ed properly to be able to handle the voltage and current draw.
Any advice will be appreciated!