AC Power Chapter 11 INEL 4075 Dr. Sandra Cruz-Pol Professor Electrical Engineering UPRM

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AC Power Chapter 11 INEL 4075 Dr. Sandra Cruz-Pol Professor Electrical Engineering UPRM. AC steady-state Power. Electric complex power Effective values Power factor Coupled inductors Ideal Transformer. Coupled inductors;.

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AC Power

Chapter 11

INEL 4075

Dr. Sandra Cruz-Pol

Professor

Electrical Engineering

UPRM

• Electric complex power
• Effective values
• Power factor
• Coupled inductors
• Ideal Transformer
Coupled inductors;

*The sign of the M is positive if both currents enter or both leave the coil through the dot.

The ideal Transformer
• N2/N1=n, ratio of turns in primary and secondary coils
• Voltage at primary is partly induced by secondary current, and vice versa.
Ideal transformer
• If both currents enter the dots then use + sign below:
• If same polarities of the voltages are in both dots, then use + sign below:
Transformer for down-converting
• Converts from high voltage to low voltage to provide power to houses and business.
• Up-converter is used at the generator source to step-up voltage for more efficient transmission (smaller current)