Basic Electronics and Electrical Engineering: Chapter 3: Transformer
Losses in a Transformer
In a transformer, there are no moving or rotating parts. Hence there is no friction and windage losses.
LOSSES
IN A TRANSFORMER
In a transformer, there
are no moving or rotating parts. Hence there is no friction and windage losses.
The losses occur in transformer are
1. Core (or) Iron loss
2. Copper loss
1. Core (or) Iron Loss
It includes both
Hysteresis loss and Eddy current loss.
Because of core flux
remains constant for all loads, the core losses also remain constant
Hysteresis loss; Wh
= ηB max1.6 f VWatts
Eddy current loss, We
= P B2max f2t2
Watts
The Hysteresis loss is
minimized by using steel of high silicon content for the core and eddy current
loss is minimized by using thin lamination of the core.
2. Copper Loss
This loss is due to the
ohmic resistance of the transformer windings.
Total copper Loss = I12R1
+ I22R2 = I12R01
= I22R02
Where,
I1 and I2
are primary and secondary currents R1 and R2 are primary
and secondary winding resistance.
Basic Electronics and Electrical Engineering: Chapter 3: Transformer : Tag: Basic Engineering : - Losses in a Transformer
Basic Electronics and Electrical Engineering: Chapter 3: Transformer
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Basic Electronics and Electrical Engineering
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