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Why do you give DC excitation to AC Synchronous motor?
If the synchronous motor is running near synchronous speed, it will begin rotating at synchronous speed when DC is applied to the rotor. Source: Electrical Machines, Drives, and Power Systems Theodore Wildi Section 17.3
Which excitation synchronous motor drawn reactive power?
Hi, Under excitation - inductive reactive power Over excitation - Capacitive reactive power.
The power angle of a synchronous motor is affected by what two things?
the excitation voltage applied the power input to the prime mover
Does a induction motor need excitation?
The induction motor is the special kind of motor which runs below and above the synchronous speed. which the synchronous motor runs nearly equal the synchronous speed. The operation of synchronous motor runs with dc field excited hence separate dc field current is given to the field circuit. where as the induction motor the field and main field is drawn from the same supply hence no excitation is required. But due to this separate starting mechanism has to be required in case of the single phase induction motor.
What is the use of synchronous machines in power grid system?
To improve the power factor
Why do you give DC excitation to AC Synchronous motor?
If the synchronous motor is running near synchronous speed, it will begin rotating at synchronous speed when DC is applied to the rotor. Source: Electrical Machines, Drives, and Power Systems Theodore Wildi Section 17.3
Is reluctance motor is a synchronous motor with dc excitation?
yes
Which excitation synchronous motor drawn reactive power?
Hi, Under excitation - inductive reactive power Over excitation - Capacitive reactive power.
Difference between static excitation system?
It is called static excitation when you make use of solid state components like diode and thyristors to convert to pure dc and to use this dc for field excitation of synchronous generators. The field winding of synchronous generators can be excited by dc source only. It is called brushless excitation because use of carbon brushes are not made here.It is called dynamic excitation is when you make use of rotating brushes. Excitation is necessary to produce reactive power and also to regulate the voltage of synchronous generators.
In synchronous motor theory is excitation current the same as field current?
yes. excitation current is same as field current to my knowledge
What is under excitation in synchronous motor?
DONT KNOW AN OF THEM 10/4 over & out
What will happen if excitation of a running synchronous motor suddenly cuts off?
something cool
Why single phase synchronous machines are not there?
Not where(?)
What is synchronous impedance?
Synchronous impedance is also known as the EMF method. It is a ratio of open circuits to short circuits, when they both are referred to the same field excitation.
What is the formula for excitation voltage?
E=Vt + Ia jXS Where E excitation voltage Vt Terminal voltage Stator Current Ia Xs synchronous Reactance
What has the author John Griffiths Barry written?
John Griffiths Barry has written: 'Some effects of variable excitation on synchronous motor oscillation ..' -- subject(s): Synchronous Electric motors
The power angle of a synchronous motor is affected by what two things?
the excitation voltage applied the power input to the prime mover
