EE541- ELECTRICAL DRIVES ASSESSMENT
- Subject Code :
EE541
- Country :
Zambia
- Using Matlab/Simulink, implement a three-phase, phase-controlled DC motor drive. Themotor is a preset model 23 with given parameters as follows: 250 HP, 500 V, 1750 rpm, field: 300
For synchronization use a three-phase phase-locked loop (PLL) block. For generating the firing pulses use a pulse generator block for a 6-pulse thyristor converter.
As part of your implementation do the following:
- Selecta suitable input voltage, and select the minimum value of firing angle to avoid applying a voltage higher than rated voltage to the armature winding of the
- Determinethe no-load speed of the motor when rated voltage is applied.
- Apply rated load torque to the motor and determine the firing angle that gives half of thespeed in part (b).
- Determinethe frequency spectrum of the input current in phase-a (use the inbuilt FFT function in the powergui).
- Using Matlab/ Simulink implement a 12-pulse phase-controlled DC motor drive using thesame motor as in question
Repeat parts (a), (b), (c) and (d) and comment on the differences between the two drives.