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


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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

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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

AC steady-state Power

  • Electric complex power

  • Effective values

  • Power factor

  • Coupled inductors

  • Ideal Transformer


Coupled inductors

Coupled inductors;

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


The ideal transformer

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

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

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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