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Synchronous machine operating characteristics

The steady-state characteristics of a round-rotor synchronous machine are described by means of phasor diagrams. Drag the red dot E and deposit it anywhere in the complex plane, thereby establishing an operating point and showing the corresponding phasor diagram and torque-angle property. The machine is represented by a reactance Xs which can be changed by a slider (Armature resistance is neglected in this model). Dragging the black point Vs along the horizontal axis adjusts the terminal voltage. The parameters are expressed in the per-unit system and motor convention is adopted. Turn on/off the traces on points Is and E; to erase, press Ctrl-F.

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© M. Riaz