EE1 PEEE Refresher Class Power Part 4 notes by T. Ernst EE1 – Power Part 4 NotesFall 2011, Page 1.

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Presentation transcript:

EE1 PEEE Refresher Class Power Part 4 notes by T. Ernst EE1 – Power Part 4 NotesFall 2011, Page 1

Fall 2011, Page 2 EE1 – Power Part 4 Notes Synchronous Machines Motors Generators Double fed induction (variable speed synchronous) VAR compensation Shunt capacitors Shunt reactors Series capacitors Series reactors

Fall 2011, Page 3 EE1 – Power Part 4 Notes Synchronous Machines

Fall 2011, Page 4 EE1 – Power Part 4 Notes Limits on field current variation

Fall 2011, Page 5 EE1 – Power Part 4 Notes Capability curve

Fall 2011, Page 6 EE1 – Power Part 4 Notes Synchronous Machine Nameplates

Fall 2011, Page 7 EE1 – Power Part 4 Notes Synchronous Impedance and over-current protection

Fall 2011, Page 8 EE1 – Power Part 4 Notes X d ”, X d ’ and 3-phase fault current

Fall 2011, Page 9 EE1 – Power Part 4 Notes Significance of rated PF

Fall 2011, Page 10 EE1 – Power Part 4 Notes Significance of rated PF

Fall 2011, Page 11 EE1 – Power Part 4 Notes Double fed induction motor (AKA: variable speed synchronous)

Fall 2011, Page 12 EE1 – Power Part 4 Notes X d ’ = 0.35 pu

Fall 2011, Page 13 EE1 – Power Part 4 Notes Choose system bases Determine component impedances

Fall 2011, Page 14 EE1 – Power Part 4 Notes Draw a pu equiv. circuit Solve for KVA G such that V syst = 0.3 pu

Fall 2011, Page 15 EE1 – Power Part 4 Notes Alternate solution: Find KVA G such that V motor = 0.7 pu

Fall 2011, Page 16 EE1 – Power Part 4 Notes Draw a pu equiv. circuit w/o transformer Solve for KVA G such that V motor = 0.7 pu

Fall 2011, Page 17 EE1 – Power Part 4 Notes Shunt capacitors PF correction Voltage regulation

Fall 2011, Page 18 EE1 – Power Part 4 Notes Shunt capacitors

Fall 2011, Page 19 EE1 – Power Part 4 Notes Shunt capacitors – why do PF correction?

Fall 2011, Page 20 EE1 – Power Part 4 Notes Shunt reactors

Fall 2011, Page 21 EE1 – Power Part 4 Notes Series capacitors

Fall 2011, Page 22 EE1 – Power Part 4 Notes Series reactors

Fall 2011, Page 23 EE1 – Power Part 4 Notes

Fall 2011, Page 24 EE1 – Power Part 4 Notes

Fall 2011, Page 25 EE1 – Power Part 4 Notes

Fall 2011, Page 26 EE1 – Power Part 4 Notes

Fall 2011, Page 27 EE1 – Power Part 4 Notes

Fall 2011, Page 28 EE1 – Power Part 4 Notes

Fall 2011, Page 29 EE1 – Power Part 4 Notes

Fall 2011, Page 30 EE1 – Power Part 4 Notes