Synchronous Generator (Alternator) part 2 : Synchronous Machines ~ SharmaGS

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Synchronous Generator or Alternator- Part 2

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Synchronous Generator or Alternator - Part 2, Link 2

The topics included in this notes are:

1. Armature Reaction
a) Armature Reaction effect due to purely Resistive load (Unity Power Factor Load)
b) Armature Reaction effect due to purely Inductive load (Zero Power Factor Lagging Load)
c) Armature Reaction effect due to Practical load (RL Load, with more Inductive)
d)Armature Reaction effect due to purely Capactive load (Zero Power Factor Leading Load)
2. Representing Armature Reaction Effect:
a) Voltage drop due to imaginary Armature Reaction
b) Voltage drop due to Leakage Flux (Reactance of Armature)
c) Voltage drop due to Resistance of Armature Conductor
3. Per Phase Equivalent Circuit of an Alternator
4. Voltage Regulation.
5. Load characteristics of an alternator.
6. Determination of Voltage Regulation by Mathematical Approach
a) For Lagging Load
b) For Leading Load
c) For Resistive Load
7. Determination of Voltage Regulation by Direct Loading
8. Voltage Regulation for Large rating Alternators:
a) Synchronous Impedance Method or EMF Method
i) Open Circuit Test of Alternator
ii) Short Circuit Test of Alternator
b) Ampere Turns Method ( AT Method) or MMF Method
i) For Zero Lagging Load
ii) For Zero Leading Load
iii) For Resistive Load
c) ZPF (or Zero Power Factor Method) or Potier Triangle Method
d) ASA Method ( American Standard Association Method)
9. Comparison between Direct Loading, EMF, MMF, ZPF and ASA method of Voltage Regulation
10. Short Circuit Ratio (SCR) of an Alternator.