Brushless Ac Generator Pdf

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Instead, the stator is used for holding armature winding.

The stator core is made up of lamination of steel alloys or magnetic iron, to minimize the eddy current losses. Recieve free updates Via Email! Either configuration works equally well and both are used separately or in combination depending on mechanical, electrical and other objectives. If the close path is provided to the conductor, induced emf causes current to flow in the circuit.

HOW IS AC VOLTAGE PRODUCED

The coils of wire used to produce a magnetic field are called the field winding and the coils that the power are called the armature winding. Initially Residual magnetism will be in exciter field or main field?

Why diode plate is fitted in between exciter armature and main field. Now, eat pray love by elizabeth gilbert pdf see the above figure. The stationary part of an alternator is called the stator and the rotating part is called the rotor.

OPERATION OF A GENERATOR

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The coil is connected to slip rings, and the load is connected through brushes resting on the slip rings. Here you can see both Armature and Field winding used as rotor as well as startor. It shows that, the direction of the current changes after half of the time period, that means we get an alternating current. The direction of magnetic flux will be form N pole to S pole. It doesn't matter whether the coil is moving or the magnetic field is moving.

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AC generator (alternator) - construction and working

Does Exciter stator or field is made up of permanent magnet? But, the unlike other machines, in most of the alternators, field exciters are rotating and the armature coil is stationary.

In the case of brushless alternator both combinations are used together in one machine. How Does Brushless Alternator Works? They are also known as synchronous generators.

As the coil is rotating clockwise, after half of the time period, the position of the coil will be as in second case of above figure. Newer Post Older Post Home. Home Electrical machines Power system Contact electricaleasy. In this case, the direction of the induced current according to Fleming's right hand rule will be along D-C-B-A.

AC generator (alternator) - construction and working