ABSTRACT
Synchronous generators rotate at a speed that it is exactly determined by the system frequency and they can control the amount of reactive power that they import or export. Induction generators rotate at a speed that is slightly above system frequency speed with the difference depending on the power output. They always import reactive power. The two main components are the stator that is fixed to the foundations and the rotor that rotates. Stators are built up from thin laminations that have slots cut in them to accommodate the windings. The alternating magnetic field from the rotor induces voltage and current in the windings.
