Week-7 Challenge: DC Motor Control

Given below attach a PDF File having solution of challenge no 7

Matlab file is also attach having Matlab model .

Answer 1: is about explaining a MATLAB demo model named ‘Speed control of a DC motor using BJT H-bridge’.

Comment on the armature current shoot-up from the scope results. Refer to the help section of ‘The Four-Quadrant Chopper DC Drive (DC7) block’. Compare it with the H-bridge model.

Answer 2: Develop a 2-quadrant chopper using simulink & explain the working of the same with the relevant results.

Answer 3: Explain in a brief about operation of BLDC motor.