Power Factor Correction Controller Design Workflow

R2026b

This project walks through the end-to-end workflow for designing and validating a cascaded current and voltage controller for a Power Factor Correction (PFC) boost converter, starting from a set of converter parameters and ending with a controller that is validated in simulation and robust across the operating envelope.

The workflow is arranged in three stages: model components and closed-loop simulation, online frequency response estimation (FRE), and stability and sensitivity analysis. These stages share a common set of parameters and gains that flow through subsystem references and MAT-file data stores, so a single edit in the plant or controller definition propagates automatically into every downstream stage.

PFC Control Design Steps

This example series shows how to design and validate a cascaded current and voltage controller for a PFC boost converter across desktop simulation, frequency response estimation, and stability analysis. Each stage is a separate live script, accessible from a project shortcut on the MATLAB(R) toolstrip. Use the shortcuts in order. Later stages consume artifacts produced by earlier stages, so run them sequentially the first time through.

The example project consists of these steps:

• Get Started with PFC Boost Converter Controller Workflow

• Tune the Controller with Online FRE

• Verify Stability and Sensitivity

Open the PFC Boost Converter Project

The PFCExample.prj project file contains the reference application, which consists of the Simscape(TM) Electrical(TM) plant subsystem reference, the current and voltage controller subsystem references, the ctrlData.mat gains data store, all supporting utilities, and the toolstrip project shortcuts that open the live script for each stage of this workflow. Open the project file by running this code.

prj = openProject("PFCWorkflow");

Open the SimulateBoostPFC.slx Simulink(R) model.

open_system("SimulateBoostPFC");

The SimulateBoostPFC.slx model is the entry point for the closed-loop desktop simulation and contains the following top-level components, which you can customize in accordance with your design:

• PFC boost converter plant. Subsystem reference that models the power stage of either the Classical or Totem-Pole boost topology using Simscape Electrical. The active topology is selected through the PFCConfig property.

• Current controller. Subsystem reference that implements the inner current control loop of the proportional-integral (PI) cascaded controller.

• Voltage controller. Subsystem reference that implements the outer voltage control loop of the PI cascaded controller.

• Controller gains data store. ctrlData.mat in ~\Data\ stores the default gains produced by the analytical design and any custom gains tuned by hand or refined through online FRE, so every downstream stage reads from the same file.

• Project shortcuts. Toolstrip buttons that open the live script for each stage of the workflow, along with supporting shortcuts for parameterization and post-processing.

To learn more about each step in the workflow, open the corresponding stage script in the MATLAB Editor.

edit("GettingStarted.m");
edit("OnlineFRE.m");
edit("StabilityAndSensitivityAnalysis.m");