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Теория отраслевых рынков (Industrial Organization)

About this course: Курс посвящен факторам, влияющим на размер компаний и структуру рынка. Почему на одних рынках преобладают малые компании, а на другом крупные? Продавцы принимают решения стратегически, однако их стимулы в свою очередь зависят от структуры рынка и от предшествующих решений. Как разделить между зоной предопределенных и свободных решений? Например, сговор как модель ценового поведения – предопределен структурой рынка или служит результатом свободного волеизъявления? Способны ли укоренившиеся на рынке продавцы препятствовать входу новичков, защищая свою рыночную долю и свою прибыль? Каковы лучшие способы предотвращения ценовых сговоров продавцов? Нужно ли (или по крайней мере желательно) запрещать или ограничивать слияния между крупными продавцами? Есть ли необходимость для государственной политики налагать ограничения на условия договоров между производителем и дистрибьютором? Как в этих условиях должна быть организована государственная политика (применение антимоноп…

Introduction to Power Electronics

Introduction to Power Electronics

About this course: This course introduces the basic concepts of switched-mode converter circuits for controlling and converting electrical power with high efficiency. Principles of converter circuit analysis are introduced, and are developed for finding the steady state voltages, current, and efficiency of power converters. Assignments include simulation of a dc-dc converter, analysis of an inverting dc-dc converter, and modeling and efficiency analysis of an electric vehicle system and of a USB power regulator. After completing this course, you will: ● Understand what a switched-mode converter is and its basic operating principles ● Be able to solve for the steady-state voltages and currents of step-down, step-up, inverting, and other power converters ● Know how to derive an averaged equivalent circuit model and solve for the converter efficiency A basic understanding of electrical circuit analysis is an assumed prerequisite for this course.

Created by:  University of Colorado Boulder

Basic Info
Course 1 of 6 in the Power Electronics Specialization.
Commitment3 weeks of study, 1-3 hours/week
Language
English
How To PassPass all graded assignments to complete the course.
User Ratings
Average User Rating 4.8See what learners said
Syllabus
WEEK 1
Ch 1: Introduction
An introduction to power electronics and to the Coursera specialization 
5 videos5 readings
  1. Video: Applications and Examples of Power Electronics
  2. Video: Sect. 1.2 Preliminaries and Grading
  3. Video: Sect. 1.3 What will be Covered
  4. Reading: Syllabus
  5. Reading: Entering formulas in homework assignments
  6. Reading: If you have problems with the Coursera system
  7. Video: Sect. 1.1 Technical Introduction
  8. Video: Sect. 1.4 Simulation of a Buck Converter using LTspice
  9. Reading: Buck converter simulation files
  10. Reading: Materials for the LTspice simulation assignment
  11. Discussion Prompt: Homework Discussion: LTspice simulation of a boost converter
Graded: Homework Assignment #1: Boost Converter Simulation
WEEK 2
Ch 2: Steady-State Converter Analysis
How to find the ideal steady-state voltages and currents of a switched-mode converter 
4 videos1 reading
  1. Video: Sect. 2.1 Introduction
  2. Video: Sect. 2.2 Volt-Sec Balance and the Small Ripple Approximation
  3. Video: Sect. 2.3 Boost Converter Example
  4. Video: * Sects. 2.4 and 2.5 Additional Topics (optional)
  5. Reading: Sample problems with solutions
  6. Discussion Prompt: Forum: Analysis of a buck-boost converter
Graded: Homework Assignment #2: Ch. 2
WEEK 3
Ch 3: Steady-State Equivalent Circuit Modeling, Losses, and Efficiency
Equivalent circuit modeling of switching converters, to predict their power conversion functions and efficiency under steady-state conditions 
6 videos1 reading
  1. Video: Sect. 3.1 The DC Transformer Model
  2. Video: Sect. 3.1 Supplement: Review of Circuits with Ideal Transformers
  3. Video: Sect. 3.2 Inductor Copper Loss
  4. Video: Sect. 3.3 Construction of Equivalent Circuit Model
  5. Video: Sect. 3.4 How to Obtain the Input Port of the Model
  6. Video: Sect. 3.5 Example: Semiconductor Conduction Losses in Boost Converter
  7. Reading: Sample problems with solutions
  8. Discussion Prompt: Homework Discussion: Loss modeling
Graded: Homework Assignment #3: Ch. 3
How It Works
Coursework
Coursework
Each course is like an interactive textbook, featuring pre-recorded videos, quizzes and projects.
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Help from Your Peers
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Certificates
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Creators
University of Colorado Boulder
CU-Boulder is a dynamic community of scholars and learners on one of the most spectacular college campuses in the country. As one of 34 U.S. public institutions in the prestigious Association of American Universities (AAU), we have a proud tradition of academic excellence, with five Nobel laureates and more than 50 members of prestigious academic academies.
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