Simulink Control Design™ - MathWorks

Design Controller for Power Electronics Model Using

Simulated I/O Data

This example shows how to design a PID controller for a power electronics system

modeled in Simulink using Simscape Electrical components.

Many power electronics systems cannot be linearized because they use high-frequency

switching components, such as pulse-width modulation (PWM) generators. However, most

Simulink Control Design PID tuning tools design PID gains based on a linearized plant

model. To obtain such a model for a power electronics model that cannot be linearized,

you can:

• Estimate the parameters of a linear model of the plant using System Identification
  Toolbox software as shown in this example.


• Estimate the plant frequency response over a range of frequencies. For an example,
  see “Design Controller for Power Electronics Model Using Frequency Response Data”
  on page 7-100.

Boost Converter Model

This example uses a boost converter model as an example of a power electronics system.

A boost converter circuit converts one DC voltage to another, typically higher, DC voltage

by controlled chopping or switching of the source voltage.

mdl = 'scdboostconverter';

open_system(mdl)

7 PID Controller Tuning