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Speed Control of Brush-less DC motor



This model presents speed control of BLDC motor.

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The model presents speed control of brushless DC motor. There is complete dynamic model of brushless DC motor. Actual speed of motor is compared with reference speed to control three phase inverter to adjust the terminal voltage. This model of BLDC motor can be used in sensorless control of BLDC motor as well.

Required Products SimPowerSystems
MATLAB release MATLAB 8.0 (R2012b)
Other requirements Fast CPU processing
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Comments and Ratings (8)
10 Jun 2014 ahmet nas

I wonder how you could obtain Ia current by using Vab and Vbc voltage values. Please kindly let me know this approximation.


19 Apr 2014 SUMEET

hello ,
I am working with a PWM-Duty cycle controlled model of BLDC. I saw your model and I am confused by the way you have modelled it. the input to the BLDC block is supposed to be a 3 phase DC voltage and you have made it with a 2-line DC input.
will you be kind enough to explain me and help me understand the idea behind this model.

thanking you

13 Apr 2014 mohammed

hi sir
Just wondering, what is the physical parameters for this example that you used?

08 Jan 2014 Anandraj selva

Sir, i am just beginner. i went throught the simulation but i dont know what controller you have used.. have you used fuzzy logic PI controller technique?

24 Nov 2013 Rashed Meer

Just wondering why you have used the word "elseif" in your code.

20 Sep 2013 Syed Abdul Rahman Kashif


Here is the code of function emfg. It works fine at Matlab 2012/2013.

function y=emfg(u)
if (u>-180)&&(u<=-120)

17 Sep 2013 mustafa

sir while running this model a error is occurred like this"undefined function or method emfg for input arguments type double" please help me to rectify this error. mail me on muserece@gmail.com thanx

04 Jun 2013 ahsan Kashif

Very good work.

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