Question
Download Solution PDFTransformer Eddy current losses are created due to ________
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFIron losses or core losses of the transformer includes both hysteresis and eddy current losses.
Eddy current losses: These are basically I2R losses present in the core due to the production of eddy current in the core.
\({W_h} = \eta B_m^2{f^2}{t^2}\)
Where, η = Steinmetz constant
Bm = maximum flux density
f = frequency of magnetization or supply frequency
t = thickness of the core
maximum flux density (Bm) is directly proportional to the V/f ratio.
\({B_m} \propto \frac{V}{f}\)
Hysteresis losses: These are due to the reversal of magnetization in the transformer core whenever it is subjected to alternating nature of magnetizing force.
\({W_h} = \eta B_m^{1.6}fv\)
Where, η = Steinmetz constant
Bm = maximum flux density
f = frequency of magnetization or supply frequency
v = volume of the core
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