Why Is The Stator Core Of Synchronous Machines Laminated

1 the stator windings and 2 the stator core.

Why is the stator core of synchronous machines laminated.

Heat often follows eddy current production. If there s also a full circuit for the current to flow there. The stator is not laminated in dc machines because it does not need to be laminated. This chapter discusses rotor and stator cores and in particular steel lamination and insulation on these laminations as well as how the laminations are fabricated into cores.

The stator core is made up of a stack of round pre punched laminations pressed into a frame which may be made of aluminium or cast iron. It restricts the materials processes and insulation of laminated stator and rotor cores that is electromagnet application. Where ever a coil is involved there will certainly be eddy current loss because of variation of magnetic field an e m f will be induced giving rise to current which does not contribute to the load rather gets wasted in the periphery of the coi. The stator core is made up of thousands tens of thousands or hundreds of thousands.

A major component of the stator core assembly is the core itself providing a high permeability path for magnetism. A stator core is built up as laminations are placed side by side in order to make a complete circular or ringed layer. This is described in faraday s law. An alternating curren creates a constantly changing magnetic field.

Lamination is used in ac machines to prevent eddy currents from generating excess power due to the transformer. Stator laminations reduce eddy current by insulating the core. The laminations are basically round with a round hole inside through which the rotor is positioned. The stator core assembly of a synchronous machine is almost identical to that of an induction motor.

The inner surface of the stator is made up of a number of. Thin silicon steel plates are stacked on top of one another around the center preventing eddy current flow. Stator core laminations have a very specific profile and the dimensions have exacting tolerances. A turbogenerator stator is comprised of two major components.

4 4 4 power angle of synchronous machines. Cools the stator core.