Active Power Factor Correction Research  Modeling and Simulation

• Facilitating the design process.

  • The converter’s control loop should regulate the output at a nominal value though inevitable disturbances such as:
    • Load variation
    • Input Sag\Swell
  • Classic control loop design techniques are not directly applicable to modern power converters.
    • In modern power converters, the transistor acts as a switch.
    • The resulting switching function is nonlinear.
    • Classic control techniques (Bode, Nyquist, etc.) are only applicable to linear systems.
    To employ classic control theory a linearized model of the converter is required.

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