Question
Download Solution PDFThe normally excited alternator works at __________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept
A synchronous generator or alternator is capable of operating at all types of power factors, i.e. either UPF, leading, or lagging power factor.
- Leading power factor: If field excitation is such that Eb < V, the alternator is said to be under-excited and it has a leading power factor.
- Lagging power factor: If field excitation is such that Eb > V, the alternator is said to be over-excited and has a lagging power factor.
- Unity power factor: If field excitation is such that Eb = V, the alternator is said to be normally excited.
The V-curve for synchronous generator or alternator is shown below
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