Simulink Control Design™ - MathWorks

Design PID Controllers for a Power Factor Corrector

using Frequency Response Estimation Method

This example shows how to tune PID controllers for plants that cannot be linearized. You

use the Linear Analysis Tool to identify the frequency model of the plant, and then you

use the PID Tuner to tune the PI controllers for the plant.

Copyright 2018, The MathWorks, Inc.

Power Factor Correction Model

This example uses the power factor correction circuit described in the Simscape™

Electrical™ example “Power Factor Correction for CCM Boost Converter” (Simscape

Electrical). Power factor correction preconverters correct the power factor of loads thus

increasing the efficiency of the distribution system. This correction is useful when non-

linear impedances such as switched mode power supplies are connected to the AC grid.

This model uses a power rectifier and a switched mode power supply to convert a 120V

AC supply to a regulated DC supply of 400V. The semiconductor components are modeled

using MOSFETs rather than ideal switches to ensure that the device on-resistances are

correctly represented.

open_system('Active_PFC.slx')

Design PID Controllers for a Power Factor Corrector using Frequency Response Estimation Method