Power System Blockset    

Chopper-Fed DC Motor Drive

The example described in this section illustrates application of the Power System Blockset to the operation of a DC motor drive in which the armature voltage is controlled by a GTO thyristor chopper.

The objective of this example is to demonstrate the use of electrical blocks, in combination with Simulink blocks, in the simulation of an electromechanical system with a control system. The electrical part of the DC motor drive including the DC source, the DC motor, and the chopper is built using blocks from the Elements, Machines, and Power Electronics libraries. The DC Machine block of powerlib models both electrical and mechanical dynamics. The load torque-speed characteristic and the control system are built using Simulink blocks.


 Transient Performance for a Fault at Bus B2 Description of the Drive System