Large generator stator silicon steel sheet coated with insulating paint, rotor silicon steel sheet why not painted?
This is a synchronous generator. The rotor iron core is made of laminated steel sheets. The rotor is made of direct current, so there is no silicon steel sheet.
Because the flow of generator stator winding is AC current, the core will produce eddy current heating under the action of alternating magnetic field, the generator is very negative, insulated from each other with insulation paint so that the iron core silicon steel sheet can effectively reduce eddy current. The rotor is used as a generator excitation, through the DC power, will not produce eddy currents, and there is no need to paint insulating paint.
Through the generator stator winding is AC current, the core will produce eddy current heating under the action of alternating magnetic field, the generator is very negative, insulated from each other with insulation paint so that the iron core silicon steel sheet can effectively reduce eddy current.
