Question about Electrical Supplies
The generator set comprises an engine and an alternator that in principle is very similar to that found fitted to most car and truck engines in that current is generated in the stator by a revolving electromagnet or rotor. Output is controlled by varying the strength of the magnetic field; these days by electronic means.
A few generators have self energising rotors but while having the advantage of simplicity they seem neither particularly reliable or efficient.
When the output is low, assuming the stator has no shorted windings, the cause is probably insufficient energising current reaching the rotor and that could be due to bad brush gear or faulty or maladjustment of the regulator...
Posted on Aug 11, 2020
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