Why Is The Stator Core Of Synchronous Machines Laminated

The inner surface of the stator is made up of a number of.

Why is the stator core of synchronous machines laminated.

Cools the stator core. Stator laminations reduce eddy current by insulating the 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. 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 is described in faraday s law. An alternating curren creates a constantly changing magnetic field. A stator core is built up as laminations are placed side by side in order to make a complete circular or ringed layer. If there s also a full circuit for the current to flow there.

4 4 4 power angle of synchronous machines. With the eddy current reduced the stator core can maintain constant power keeping your motor running. Thin silicon steel plates are stacked on top of one another around the center preventing eddy current flow. Whenever there is a changing magnetic field in a conductor an emf is generated.

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. Heat often follows eddy current production. Lamination is used in ac machines to prevent eddy currents from generating excess power due to the transformer. The stator core is made up of thousands tens of thousands or hundreds of thousands.

A turbogenerator stator is comprised of two major components. A major component of the stator core assembly is the core itself providing a high permeability path for magnetism. Stator core laminations have a very specific profile and the dimensions have exacting tolerances. The stator is not laminated in dc machines because it does not need to be laminated.

It restricts the materials processes and insulation of laminated stator and rotor cores that is electromagnet application. 1 the stator windings and 2 the stator core.