About this course: This course teaches how to design a feedback system to control a switching converter. The equivalent circuit models derived in the previous courses are extended to model small-signal ac variations. These models are then solved, to find the important transfer functions of the converter and its regulator system. Finally, the feedback loop is modeled, analyzed, and designed to meet requirements such as output regulation, bandwidth and transient response, and rejection of disturbances. Upon completion of this course, you will be able to design and analyze the feedback systems of switching regulators. This course assumes prior completion of courses Introduction to Power Electronics and Converter Circuits.

Created by: University of Colorado Boulder

Taught by: Dr. Robert Erickson, Professor
Electrical, Computer, and Energy Engineering

Basic Info	Course 3 of 6 in the Power Electronics Specialization
Language	English
How To Pass	Pass all graded assignments to complete the course.
User Ratings	4.8 stars Average User Rating 4.8See what learners said

Syllabus

WEEK 1

Ch 7: AC Equivalent Circuit Modeling

How to extend the converter steady-state equivalent circuits, derived in the previous courses, to obtain small-signal ac equivalent circuits that model the important converter and regulator system dynamics.

8 videos, 1 reading

Video: Sect 7.1 Introduction to AC Modeling
Video: Sects 7.2.1-4 Averaged AC Modeling
Video: *Sect 7.2.2 Discussion of Averaging
Video: Sect 7.2.5 Perturbation and Linearization
Video: Sects 7.2.6-8 Construction of Equivalent Circuit
Video: Sect 7.6 Modeling the Pulse-Width Modulator
Video: Sect 7.5 The Canonical Model
Video: *Sect7.3 State-Space Averaging
Reading: Homework 1 Materials

Graded: Homework Assignment 1: Chapter 7

WEEK 2

Ch 8: Converter Transfer Functions - Part 1

A review of the construction of Bode plots of the magnitude and phase of first-order, second-order, and higher-order transfer functions, with emphasis on techniques needed for design of regulator systems. Design-oriented analysis techniques to make approximations and gain insight into how to design ac systems having significant complexity.

7 videos, 1 reading

Video: 8.0 Introduction to Design-Oriented Analysis
Video: 8.1 Review of Bode Diagrams: Pole
Video: 8.1.2 Other Basic Terms
Video: 8.1.5 Combinations
Video: 8.1.6 Second-order Response: Resonance
Video: 8.1.7 The Low-Q Approximation
Video: 8.1.8 Analytical Factoring of Higher-Order Polynomials
Reading: Homework 2 Materials

Graded: Homework Assignment 2: Ch. 8, Transfer Functions

WEEK 3

Ch 8: Converter Transfer Functions - Part 2

Design-oriented analysis techniques to make approximations and gain insight into how to design ac systems having significant complexity. Graphical construction techniques.

5 videos, 1 reading

Video: 8.2 Analysis of Converter Transfer Functions
Video: 8.2.2 Transfer Functions of Basic Converters
Video: 8.3.1 Graphical Construction of Impedances
Video: 8.3.3 Graphical Construction of Parallel and More Complex Impedances
Video: 8.3.5 Graphical Construction of Converter Transfer Functions
Reading: Homework 3 Materials

Graded: Homework Assignment 3: Construction of Transfer Functions

WEEK 4

Ch 9: Controller Design

Application of the material of Chapters 7 and 8 to design closed-loop regulators that employ switching converters. How to design a feedback system that accurately regulates its output while rejecting disturbances.

8 videos, 1 reading

Video: 9.1-2 Introduction
Video: 9.3 Construction of Closed-loop Transfer Functions
Video: 9.4.1 Stability
Video: 9.4.2 Phase Margin vs. Closed-loop Q
Video: 9.5 Regulator Design
Video: 9.5.4 Design Example
Video: Op-amp Compensator Design
Video: 9.5.5 Another Example: Point-of-Load Regulator
Reading: HW#4 Materials

Graded: Homework Assignment 4 (Part 1): Feedback

Graded: Homework Assignment 4 (Part 2): Closed-Loop Simulation

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