Derive the condition for maximum efficiency of a transformer. Also, derive equation for load maximum efficiency.

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written 9.4 years ago by

teamques10 ★ 70k

modified 3.8 years ago by

pedsangini276 • 4.8k

Mumbai University > FE > Sem 1 > Basic Electrical and Electronics Engineering

Marks: 8 M

Year: Dec 2013

basic electrical engineering

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written 9.4 years ago by

teamques10 ★ 70k

Condition for maximum efficiency

We know that,

$Ƞ = output/ output + losses$

Considering the secondary side,

$Ƞ= V_2I_2\cosф2/ V_2I_2\cosф2 + W1 + I^2_2Ro2$

Diff w.r.t. I2,

For maximum efficiency, $dn/dI2 = 0$

$dn= (V_2I_2\cosф2/ V_2I_2\cosф2 + W1 + I22Ro2) Y2 \cos ф2 \\ dI= V_2I_2\cosф2/ V_2I_2\cosф2(V2 \cosф2 + W2Ro2/ …

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