Question
Download Solution PDFWhy are short-pitch windings preferred in alternators despite their lower induced EMF per coil?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFShort-pitch windings help reduce harmonic content in the generated EMF, which results in a more sinusoidal output. They also reduce copper loss due to shorter end connections and improve efficiency. Furthermore, they reduce the amount of insulation required due to a lower voltage between adjacent coils and improve the thermal performance of the alternator.
While they slightly reduce the EMF, the overall performance benefits such as better waveform and reduced copper losses lead to increased overall efficiency.
Last updated on Jun 7, 2025
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