LOSSES IN THE TRASFORMER

Losses:

Losses

In a Transformer there are mainly 4 types of losses.They are

1.Iron or Core or Constant losses:These losses occur in the core of the transformer and hence they are called as core or constant losses.They are divided into 2 types.

Hysteresis losses:This small amount of power consumed by the magnetic domains in order to reverse their orientation for every half cycle.
Eddy Current losses:When the nature of flux in the core is alternating then there is circulating current and causes Eddy current losses.

2.Copper or Ohmic or Variable losses:These losses occur in the windings of a Transformer and as the winding are made out of copper these losses are known as copper losses.

3.Stray losses:These are of 2 types

Cu Stray losses:When ever the conductors are solid the circulating current stray current causes a loss which is Cu Stray loss.
Iron Stray losses:It is a loss taken place in the Transformer tank due to the leakage flux which is a variable loss.

4.Dielectric losses:Whenever the dielectric strength of insulating material is less than the impressed voltage then it will allow a small amount of current called displacement current and this causes Dielectric losses.

Comments

Application of Artificial Neural Network in Power electronics

INDEPENDENT SOURCES AND DEPENDENT SOURCES

Independent sources: There are two types of independent sources they are Independent Voltage source Ideal voltage source::Load voltage is independent of Load current. Practical voltage source:Load voltage depends on Load current. 2. Independent Current source Ideal current source::Load current is independent of Load voltage. Practical current source:Load current depends on Load voltage. Dependent sources: The voltage or current of Dependent sources depends on other circuit parameters.There are four types of Dependent sources they are Voltage Control Voltage Source(VCVS):This means that the Voltage Source is depending on other voltage parameter available in the same circuit. Voltage Control Current Source(VCCS):This means that the Current Source is depending on other voltage parameter available in the same circuit. Current Control Voltage Source(CCVS):This means that the Voltage Source is depending on other Current parameter available in the same...

SWITCHING TRANSIENTS IN TRANSFORMER

Switching Transients: The word Transients is always very Scary for me but not any more hahaaa...........what about you???? Well coming to the point...why do these Switching Transients occur in a Transformer. When the switch is closed when the voltage is maximum...then the flux required by the core is zero and the available flux in the core is also zero and hence NORMAL OPERATION is sufficient When the switch is closed when the voltage is crossing zero...then the flux required by the core is maximum but here the avaliable flux in the core is zero and hence TRANSIENT OPERATION is required Here when the Transient operation takes place then the flux doubles gradually and this is known as Doubling Effect of Transformer.This Doubling Effect causes magnetic in rush current and Damage in the insulation. Using Secondary Harmonic Restraining Coil can reduce all these Drawbacks.

ELECTRIC HUB

Search This Blog