// multi-utility computation suite · offline · instant · precise
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eng.synchronous-generator-phasor Calculator
Calculates synchronous generator voltage phasor, internal EMF, and voltage regulation from armature current and synchronous reactance. Voltage regulation at full load is typically 20–30% for salient pole generators — the phasor diagram shows how armature reaction affects terminal voltage.
Inputs
Vt V
Electric potential difference (V). Drives current through a circuit. Household: 120 V (US) or 230 V (EU/UK).
Ia A
Rate of charge flow (A). I = V/R. Above ~100 mA through the body can be lethal. Fuses protect against overcurrent.
Pf
A multiplier applied in the calculation.
Xs Ohm
Reference formula or conversion factor shown for context.
Ra Ohm
Opposition to current flow (Ω). V = IR. Resistors in series add; in parallel their reciprocals add.
Results
excitation voltage Ea (V per phase)
Electric potential difference between the two terminals (V). In AC systems, quoted as RMS — 230 V mains has a peak of ~325 V.
power angle δ (°)
The computed angle in degrees or radians.
three-phase power output P (MW)
The current phase of the cycle or process.
Ea = Vt + Ia(Ra + jXs)
Reference formula or conversion factor shown for context.
voltage regulation VR = (Ea-Vt)/Vt
Electric potential difference between the two terminals (V). In AC systems, quoted as RMS — 230 V mains has a peak of ~325 V.