E E 2415 Lecture 12 Mutual Inductance and Ideal Transformers

Mutual Flux Strongly Coupled Circuits

Circuit Model - 1

Circuit Model - 2

Ideal Transformers (1/2)

Ideal Transformers (2/2) The ideal transformer has no power loss and consumes no reactive power. Impedances are reflected across the ideal transformer by the square of the turns ratio.

An Analogy

Ideal Transformer Example (1/2)

Ideal Transformer Example (2/2)

Ideal Transformer Example 2 Simplify Load Circuit

Simplify Load Circuit & Transform Multiply by square of turns ratio

Load as Seen on High Voltage Side

Calculations - 1

Calculations - 2

Mutual Flux Weakly Coupled Circuits

Weak Coupling Example

2 nd Weak Coupling Case