Development of the phasor diagram and equivalent circuit for the salient pole synchronous machine

Phasor diagrams and equivalent circuits are widely used for analysis of AC electrical machines for a long time. Different variants of the phasor diagram for the salient pole synchronous machine are composed using the principle of two reactions. Variants of the equivalent circuit of such machines are known too. Traditional phasor diagram enables to calculate machine power only in separate way (from the phasors of external voltage and armature current). The developed phasor diagrams and equivalent circuit, in which the direct-axis and quadrature-axis synchronous reactances and additional resistances with the components of armature current are used, are presented in the paper. They enable to calculate power of the considered machine in various ways and more successful to analyse them. Ill. 9, bibl. 3 (in English, summaries in English, Russian and Lithuanian).