1. Explain the no-load saturation curve and the paragraph curve of the synchronous generator and then...

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Electrical Engineering

1. Explain the no-load saturation curve and the paragraphcurve of the synchronous generator and then explain how to obtainthe paragraph ratio (including the reason for the short-circuitcurve becoming a straight line when the field current increases)Please describe the characteristics of a large synchronousgenerator.
2. Explain the phenomena that occurs when the number ofrevolutions of one of the two synchronous generators is running inparallel and the number of revolution is unknown, disperse the loadbetween the two generators in parallel with the generator Pleaseexplain how to do.
3. Explain the exploration of synchronous motors and explainwhat kind of principle the braking winding preventsexploration.
4. Describe the speed control (V / f constant control) of thesynchronous motor.

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3.6 Ratings (306 Votes)

4ans Speed Control of Three Phase Induction MotorA three phase induction motor is basically a constant speed motorso its somewhat difficult to control its speed The speed controlof induction motor is done at the cost of decrease in efficiencyand low electrical power factor Before discussing the methods tocontrol the speed of three phase induction motor one should knowthe basic formulas of speed and torque of three phase inductionmotor as the methods of speed control depends upon theseformulasSynchronous SpeedWhereN is the speed of the rotor of an induction motorNs is the synchronous speedS is the slipThe torque produced by three phase induction motor is given byThe Speed of Induction Motor is See Answer

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