Synchronous Generator

Synchronous Generator ( Alternator)

An a.c generator, commonly referred to as synchronous generator or alternator, converts mechanical power into a.c. power.

The term alternator is used because it produces a.c. power. It is called synchronous generator because it must be driven at synchronous speed NS (= 120 f/p) to produce a.c. power of the desired frequency f.

Thus for a 4-pole (i.e. P = 4) alternator to produce 50 Hz power, its speed of rotation must be 1500 mm (NS = 120 x 50/4 = 1500 r.p.m.).

The synchronous generator can be either single-phase or a polyphase generator.

Due to many technical and economic advantages, we always produce 3-phase power and hence the need for the 3-phase alternator (or 3-phase synchronous generator).

Synchronous Generator ( Alternator) Diagram

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Synchronous Generator[/caption]

Geiger-Muller Counter

Limitations of Terzaghi Theory

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