my project is to run the bldc motor without using a sensor. i have chosen free wheeling diode method to obtain it. i am using irf520 mosfet for inverter circuit and a diode across each mosfet in counter direction. to detect the current passing through the diode im using op amp(IC741) across a resistor connected in series with diode. data sheet of the motor is attached below. 200187 is the motor number. its equipped with hall effect sensors, but im using it for sensor less by just grabbing the 3 leads of the motor for the input leaving the rest alone. the controlling signals for the gate of mosfet is given from the arduino, and the input signals are taken from the output of the op amp
could any one please send me the program related to it for arduino uno.
200187 motor bldc.pdf (563 KB)