Alternator slip ring replacement

     I've always liked generators. Unlike alternators, they will provide electrical power even if the battery is dead since generators depend on residual magnetism to provide the lines of magnetic flux needed to produce output.
Generators are tough, too: unlike alternators, they don't need a rectifier bridge to convert alternating current (AC) output to useable direct current (DC) for our airplanes' electrical systems.

The rotor's magnetic field may be produced by permanent magnets, or by a field coil electromagnet. Automotive alternators use a rotor winding which allows control of the alternator's generated voltage by varying the current in the rotor field winding. Permanent magnet machines avoid the loss due to magnetizing current in the rotor, but are restricted in size, due to the cost of the magnet material. Since the permanent magnet field is constant, the terminal voltage varies directly with the speed of the generator. Brushless AC generators are usually larger than those used in automotive applications.

Tags: alternator, slip, ring, replacement,

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