BLDC Speed Control

im currently doing my final year project on closed loop control of a BLDC motor and think i have the code working for the motor to run at rated speed. however, im struggling with the speed control part.

would the PWM signals used to control the speed be applied to the gate signals of the MOSFETs on the three phase bridge or would PWM be applied to the actual power source of the bridge itself?

thanks

Hi,
Welcome to the forum.

Please read the first post in any forum entitled how to use this forum.
http://forum.arduino.cc/index.php/topic,148850.0.html then look down to item #7 about how to post your code.
It will be formatted in a scrolling window that makes it easier to read.

Can you please post a copy of your circuit, in CAD or a picture of a hand drawn circuit in jpg, png?

Thanks.. Tom.. :slight_smile: