Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

Armature winding in an alternator may be either closed type open type. Closed winding forms star connection in armature winding of alternator.There are some common properties of armature winding. First and most important property of an armature winding is, two sides of any coil should be under two adjacent poles. That means, coil span = pole pitch. The winding can either be single layer or double layer. Winding is so arranged in different armature slots, that it must produce sinusoidal emf.Types

What is an Armature?An armature is the component of an electric machine (i.e., a motor or generator) that carries alternating current (AC). The armature conducts AC even on DC (Direct Current) machines via the commutator (which periodically reverses current direction) or due to electronic commutation (e.g., in a brushless DC motor).The armature provides housing and support to the armature winding, which interacts with the magnetic field formed in the air gap between the stator and the rotor. The

When a conductor moves in a magnetic field, an emf is induced across the conductor. This is the only basis on which each and every rotating electric generator works (such as portable generators).According to Faraday’s law of electromagnetic induction, when a conductor links with a changing flux, it will have an induced emf across it. The value of induced emf across the conductor depends on the rate of change of flux linkage with the conductor. The direction of the induced emf in the conductor ca