- Level Foundation
- Duration 19 hours
- Course by University of Colorado Boulder
-
Offered by
About
This course can also be taken for academic credit as ECEA 5701, part of CU Boulder's Master of Science in Electrical Engineering degree. This course introduces more advanced concepts of switched-mode converter circuits. Realization of the power semiconductors in inverters or in converters having bidirectional power flow is explained. Power diodes, power MOSFETs, and IGBTs are explained, along with the origins of their switching times. Equivalent circuit models are refined to include the effects of switching loss. The discontinuous conduction mode is described and analyzed. A number of well-known converter circuit topologies are explored, including those with transformer isolation. The homework assignments include a boost converter and an H-bridge inverter used in a grid-interfaced solar inverter system, as well as transformer-isolated forward and flyback converters. After completing this course, you will: Understand how to implement the power semiconductor devices in a switching converter Understand the origins of the discontinuous conduction mode and be able to solve converters operating in DCM Understand the basic dc-dc converter and dc-ac inverter circuits Understand how to implement transformer isolation in a dc-dc converter, including the popular forward and flyback converter topologies Completion of the first course Introduction to Power Electronics is the assumed prerequisite for this course.Modules
Introduction
1
Discussions
- Introduce Yourself
Administrative Details
1
Readings
- If you have problems with the Coursera system
Single-, Two-, and Four-Quadrant Switches
1
Discussions
- Homework Discussion: Switch Realization
3
Videos
- Sect. 4.1.1 Single-Quadrant Switches
- Sect. 4.1.2 Current-Bidirectional Switches
- Sects. 4.1.3-5 Two- and Four-Quadrant Switches, Synchronous Rectifiers
1
Readings
- Homework Assignment 1: hard copy
1
Quiz
- Homework Assignment 1: Switch Realization
Basic Issues of Power Semiconductors
1
Videos
- Sect. 4.2.0 Introduction to Power Semiconductors
Diode Rectifiers
4
Videos
- Sect. 4.2.1.1 Diode Rectifiers
- Sect. 4.2.1.2 Equivalent Circuit Modeling of Switching Loss
- Sect. 4.2.1.3 Boost Converter Example
- Sect. 4.2.1.4 More About Rectifiers
Power Transistors
5
Videos
- Sect. 4.2.2.1 Power MOSFETs
- Sect. 4.2.2.2 MOSFET Gate Drivers
- Sect. 4.2.3 BJTs and IGBTs
- Sect. 4.3 More About Switching Loss
- Wide Bandgap Power Semiconductors
Simulation
2
Discussions
- Homework Discussion: Simulation Assignment
- Optional Forum: Followup Questions
1
Videos
- Simulation of a Synchronous Boost Converter
2
Readings
- LTspice File: Synchronous Boost Converter
- Hard copy and zip file for simulation assignment
1
Quiz
- Homework Assignment #2: Simulation
Introduction to DCM and Mode Boundary
1
Videos
- Sect. 5.1 Origin of DCM and Mode Boundary
DCM Analysis
1
Discussions
- Homework Discussion: Switching Loss and DCM
2
Videos
- Sect. 5.2 Analysis of the Conversion Ratio M(D,K)
- Sect. 5.3 Boost Converter Example
1
Readings
- Homework Assignment 3: Hard Copy
1
Quiz
- Homework Assignment #3
Converter Topologies
3
Videos
- Sect. 6.1.1-2 DC-DC Converter Topologies
- Sect. 6.1.4 How to Synthesize an Inverter
- Sect. 6.2 A Short List of Nonisolated Converters
Transformer-Isolated Converters
1
Discussions
- Homework Discussion: Transformer Isolation
3
Videos
- Sect. 6.3 Transformers
- Sect. 6.3.2 The Forward Converter
- Sect. 6.3.4 The Flyback Converter
1
Readings
- Homework Assignment #4: Hard Copy
1
Quiz
- Homework Assignment #4: Chapter 6

Dr. Robert Erickson