September 28, 2012

What Causes Inefficiency and Power Loss in the Transformer?

Inefficiency and the power loss in a transformer is caused by three things:
A. Hysteresis loss: which is caused by the magnetic field created in the transformer’s primary, secondary and harmonic windings. 

B. Eddy current loss: or skin effect: which is caused by the high frequency current traveling on the outer edge of the conductor. 

C. Copper loss: which is caused by the power dissipated in the windings of a transformer. Copper loss is minimized by using as large conductors as possible in the windings. 

Note: A and B are fixed losses. C varies by  I2R. When the efficiency is computed the computation is done with 100% load.


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