2. The alternator

2.1 Design and construction

• Principle

  The operating principle of a nuclear power plant alternator is similar to that of any other alternator, whose purpose is to transform the mechanical energy of the rotor into electrical energy at the stator winding by means of an electromagnetic field rotating in the air gap and channeled through the magnetic circuit (figure 5 ).

• The stator

  It consists mainly of a frame, a magnetic circuit and the armature winding. The magnetic circuit consists of a stack of insulated laminations notched to form slots. The casing consists of a shell, spacer webs...