ABSTRACT
Synchronous machine stator resembles the stator of the induction machine but the rotor resembles the stator (d.c. excitation or PM or salient-pole) of the d.c. brush machine.
Essentially f2 (in the rotor)=0. Consequently f1=n×p1. There are many topologies for single-phase or multiple-phase a.c. power source at constant or variable frequency f1 which conditions variable speed n. Most used topologies are illustrated.
In addition to symmetric distributed a.c. windings (treated for IMs) nonoverlapping (tooth-wound) coil windings, used mainly so far for modern permanent magnet rotor synchronous machines, are introduced. The rotor (with PM or d.c. excitation) produced airgap flux density and its emf, two-reaction principle via Generator mode, armature reaction and magnetization inductances Ldm≠ Lqm expressions, symmetric steady-state equations and phasor-diagram, autonomous synchronous generator characteristics via lab tests, operation at power grid (via lab) active power/angle curves, V-shape curves, basic static and dynamic stability math conditions (with numerical examples) unbalanced load steady-state equations: X d , X q , Z_ and X 0 measurements (lab.), large synchronous motors power balance, PM and reluctancy synchronous motors characteristics (by numerical examples), operation under load torque pulsations, asynchronous starting and self-synchronizations, single-phase and split-phase capacitor PM synchronous motors, preliminary electromagnetic (detailed) design methodology via a case study, the premium-line start PM and reluctance induction-synchronous motor, an extended Summary and 10 proposed problems (with solving hints) constitutes a rather comprehensive Academia-Industry-intended presentation of synchronous machines steady state.
