Prerequisite
Power Electronics 1: ECEN 5797
Textbook
Erickson and Maksimovic, Fundamentals of Power Electronics, 2nd edition, Kluwer Academic Publishers (2000), ISBN 0-7923-7270-0. Can be ordered from the University of Colorado bookstore.
Computer requirements
Access to web is required. A Spice simulator and MATLAB/Simulink are required. PSpice and MATLAB/Simulink are available to on-campus students on Power Lab and Circuits Lab computers. The free student version of PSpice is sufficient. The student version of MATLAB/Simulink is sufficient. Use of a simple spreadsheet, such as Excel, may be helpful but is not required.
Introduction
Averaged switch modeling and simulation
Section 7.4 and Appendix B
Deriving averaged small-signal models of converters by averaging only the
switching elements. Objectives of simulation. Simulation of converter small-signal behavior using averaged switch models.
Middlebrook's Extra Element Theorem
Appendix C
Use of null double injection techniques to find how addition of an element changes a transfer function.
Input Filter Design
Chapter 10
How the addition of an input filter disrupts the loop gain of a switching regulator. How to design an input filter having adequate damping, so that the input filter does not change the loop gain.
The n-Extra Element Theorem
Supplementary notes posted on the web site. Also, Section 8.1.8 will be covered.
An extension of the extra element theorem that allows exact expressions for complex transfer functions to be written "by inspection."
Middlebrook's Feedback Theorem
Supplementary notes posted on web site
Analysis of feedback circuits using null double injection techniques
Averaged switch modeling and simulation of the discontinuous conduction mode
Chapter 11 and Appendix B
Equivalent circuit modeling of converters operating in the discontinuous conduction mode, using averaged switch modeling. How changing the operating mode leads to substantial changes in small-signal transfer functions.
Introduction to sampled-data modeling
Supplementary notes posted on the web site
Sampled-data small-signal modeling. Pulse-width modulator as a sampler, equivalent hold. Application of the sampled-data model to dicontinuous conduction mode.
Chapter 12 and Appendix B
Introduction to this very popular technique for controlling switching converters. Basic circuitry and slope compensation. Averaged switch modeling. Sampled-data modeling of current programmed converters (Supplementary notes posted on the web site).
Detailed small-signal analysis. Simulation. Effects of current mode control on basic transfer functions.
Supplementary notes posted on the web site
Digital realization of the basic control loop. Discrete-time converter model. Examples of discrete-time compensator design.
Power and Harmonics in Nonsinusoidal Systems
Chapter 16
Pulse-Width Modulated Rectfiers
Chapter 18
Modeling, analysis, and control of low-harmonic rectifiers. Boost, flyback, and other topologies for controlling the input current waveform of an ac-dc rectifier. Average-current, peak-current-mode, critical conduction mode, and nonlinear carrier control techniques. Determination of rms currents, and comparison of performances of popular topologies. System considerations. Modelling losses. Simulation.