hii, i am trying to build a 750w 48v bldc motor controller, the problem i am facing right now is, my controller is not self starting the motor. it always need little push to rotate the motor, after little push motor respond correctly to throttle until i did not bring throttle to zero position. it seems like there is problem with high side mosfet not turning on at the start, so tried changing bootstrap capacitor from 1uf to 10uf to 22uf but still no success. please help me with this problem i am really stuck in this. please find attach schematic of controller.
208.3 KB Views: 23