EE541- ELECTRICAL DRIVES ASSESSMENT
- Subject Code :
EE541
- Country :
Zambia
- Using Matlab/Simulink, implement a three-phase, phase-controlled DC motor drive. Themotorisapresetmodel23withgivenparametersasfollows:250HP,500V,1750rpm,field:300
Forsynchronizationuseathree-phasephase-lockedloop(PLL)block.Forgeneratingthefiringpulses use apulse generator blockfora 6-pulsethyristorconverter.
Aspartofyourimplementationdothefollowing:
- Selectasuitableinputvoltage,andselecttheminimumvalueoffiringangletoavoidapplyingavoltagehigherthanratedvoltagetothearmaturewindingofthe
- Determinetheno-loadspeedofthemotorwhenratedvoltageis applied.
- Apply rated load torque to the motor and determine the firing angle that gives half of thespeedinpart(b).
- Determinethefrequencyspectrumoftheinputcurrentinphase-a(usetheinbuiltFFTfunctioninthepowergui).
- Using Matlab/ Simulink implement a 12-pulse phase-controlled DC motor drive using thesamemotor asinquestion
Repeatparts (a),(b),(c)and(d)andcommentonthedifferences betweenthetwodrives.
