Why Is The Stator Core Of Synchronous Machines Laminated

An alternating curren creates a constantly changing magnetic field. The stator core assembly of a synchronous machine is almost identical to that of an induction motor. With the eddy current reduced the stator core can maintain constant power keeping your motor running.

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Stator laminations reduce eddy current by insulating the core.

Why is the stator core of synchronous machines laminated.

Whenever there is a changing magnetic field in a conductor an emf is generated. The laminations are basically round with a round hole inside through which the rotor is positioned. Lamination is used in ac machines to prevent eddy currents from generating excess power due to the transformer. It restricts the materials processes and insulation of laminated stator and rotor cores that is electromagnet application.

The stator core is made up of thousands tens of thousands or hundreds of thousands. This is described in faraday s law. Stator core laminations have a very specific profile and the dimensions have exacting tolerances. A major component of the stator core assembly is the core itself providing a high permeability path for magnetism.

Currently laminations are manufactured by punching stamping dies or computer controlled laser cutting machines. Cools the stator core. 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. 4 4 4 power angle of synchronous machines.

1 the stator windings and 2 the stator core. Thin silicon steel plates are stacked on top of one another around the center preventing eddy current flow. If there s also a full circuit for the current to flow there. 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.

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. A turbogenerator stator is comprised of two major components. The stator is not laminated in dc machines because it does not need to be laminated. A stator core is built up as laminations are placed side by side in order to make a complete circular or ringed layer.

The inner surface of the stator is made up of a number of. Heat often follows eddy current production.

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