Calculate the excitation voltage and the power angle

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Reference no: EM131154185

A three-phase, wye-connected, 2300-V, 60-Hz, round-rotor synchronous motor has a synchronous reactance of 2 Ω per phase and negligible armature resistance.

(a) If the motor takes a line current of 350 A operating at 0.8 power factor leading, calculate the excitation voltage and the power angle.

(b) If the motor is operating on load with a power angle of -20°, and the excitation is adjusted so that the excitation voltage is equal in magnitude to the terminal voltage, determine the armature current and the power factor of the motor.

Reference no: EM131154185

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