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

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

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

  2. AC steady-state Power • Electric complex power • Effective values • Power factor • Coupled inductors • Ideal Transformer

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

  4. 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.

  5. 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:

  6. 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)

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