Is this the proper way to implement PID for 3 Phase inverter induction motor speed control?

I am wondering if this the proper way to implement PID with pwm generation system for speed control of induction motor. My screenshot of my model is below. I have also attached my model as well. I have used pieces from this model in following link to try to implement PWM generation system with PID: http://www.mathworks.com/matlabcentral/fileexchange/39409-closed-loop-controller-of-induction-motor-feed-by-3-phase-inverter

Answer 1

[Manikandan]

Lot of theoretical methods available to find KP, Ki and Kd values, my suggestion for beginner try to do trial and error method. (manual tuning)

[leen Alhalabi]

can you please advise what are the other ways ?