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What is the difference between current and voltage commutation?
Voltage commutation: This is possible in ac circuits...The thyristor gets turned off by reverse bias (negative half cycle) voltage applied across it. This is also called line commutation. Current Commutation: This is possible in dc circuits ...This type of commutation makes use of auxiliary circuit which contains inductor,capacitor,diode and even a thyristor(auxiliary). This is called Forced commutation.
Natural commutation is used in which kind of circuit?
phase controlled RECTIFIER circuit used Natural Commutation......
What are the problems of commutation in a DC generator?
1.resistance commutation 2.e.m.f commutation
What is the difference between natural and force commutation?
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What is commutation of a rectifier?
Commutation in a rectifier: Refers to the process of transfer of current from one device (diode or thyristor) to the other in a rectifier. The device from which the current is transferred is called the "out going device" and the device to which the current is transferred is called the "incoming device". The incoming device turns on at the beginning of commutation while the out going device turns off at the end of commutation.Commutation failure: Refers to the situation where the out going device fails to turn off at the end of commutation and continues to conduct current.
What are the types of commutation?
Two types of commutation process 1) Natural commutation 2) Forced commutation
How commutation can be improve?
Generally there are two methods of improving Commutation :- 1.Resistance Commutation 2.Emf or Voltage Commutation The Commutation can also be improve by using interpoles and compensating windings.
What are the difference between choppers and inverters?
chopper transforms ac to dc (dc chopper) while all inverter transform dc to ac commutation used in chopper: forced,load commutation used in inverter:forced(180 vsi),natural or line(120 vsi)
What is commutation of thyristor?
the process of turning off of a thyrisror is known as commutation
How the slip vary with load?
The slip vary with load is a AC electric motor which the electric current in the rotor needed to make torque that is induced by electromagnetic induction. It does not repair mechanical commutation parts the energy and transferred from stator to rotor.
What is the difference between current and voltage commutation?
Voltage commutation: This is possible in ac circuits...The thyristor gets turned off by reverse bias (negative half cycle) voltage applied across it. This is also called line commutation. Current Commutation: This is possible in dc circuits ...This type of commutation makes use of auxiliary circuit which contains inductor,capacitor,diode and even a thyristor(auxiliary). This is called Forced commutation.
Natural commutation is used in which kind of circuit?
phase controlled RECTIFIER circuit used Natural Commutation......
What are the problems of commutation in a DC generator?
1.resistance commutation 2.e.m.f commutation
What is a line commutation?
it is the natural commutation ...by making open circuit or short circuit on the thyristor to make it turn off.
Definition of last pay drawn?
last pay drawn meaning? what is basic pension is it pension before commutation or after commutation?
What is the power of commutation?
The power of commutation is a power only given to the president of the United States and is the power to commute (reduce) the length of a sentence or a fine by a court.
What is purpose of commutation?
The purpose of commutation is to switch the direction of current flowing through a motor's windings, thereby controlling the motor's rotation. Commutation ensures that the armature's magnetic field is always in the correct alignment with the stator's magnetic field, enabling smooth and continuous motor operation.
