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所在平台: Coursera |
课程主页: https://www.coursera.org/learn/converter-circuits
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本课程名称：转换电路 概述：本课程可作为学分修读，课程代码为ECEA 5701，是科罗拉多大学博尔德分校电气工程硕士学位课程的一部分。课程介绍了更高级的开关模式转换器电路概念，解释了在具有双向功率流的逆变器或转换器中电力半导体的实现。课程内容涵盖电力二极管、电力MOSFET和IGBT的工作原理，以及它们的开关时间来源。针对开关损耗的影响，等效电路模型进行了细化。课程还描述并分析了不连续导通模式，并探索了包括变压器隔离的多种知名转换电路拓扑。 作业内容包括在与电网相连的太阳能逆变器系统中使用的升压转换器和H桥逆变器，以及变压器隔离的正向和反向转换器。 完成本课程后，您将能够： ● 理解如何在开关转换器中实现电力半导体器件。 ● 理解不连续导通模式的来源，并能解决在DCM下运行的转换器。 ● 理解基本的直流-直流转换器和直流-交流逆变器电路。 ● 理解如何在直流-直流转换器中实现变压器隔离，包括流行的正向和反向转换器拓扑。 课程先修要求为第一门课程《电力电子导论》。 课程大纲： - 章节 4.1：开关实现 描述：如何使用晶体管和二极管实现开关，包括具有双向功率流或交流输出的应用。 - 章节 4.2：电力半导体开关 描述：电力半导体开关的基本概念，包括开关时间和开关损耗的来源，以及如何将开关损耗纳入等效电路模型中。介绍MOSFET、IGBT及其栅极驱动考虑。 - 章节 5：不连续导通模式 描述：由于单向开关实现而产生的不连续导通模式（DCM），对模式边界和输出电压进行分析。 - 章节 6：转换电路 描述：一些知名的转换电路及其来源，如何在直流-直流转换器中 Incorporate 变压器隔离，变压器隔离转换器的分析和等效电路建模。
Name:Ch 4.1: Switch Realization
Description:How to implement the switches using transistors and diodes, including applications having bidirectional power flow or ac outputs.
Name:Ch 4.2: Power Semiconductor Switches
Description:Basics of power semiconductor switches, including the origins of switching times and switching loss. How to incorporate switching loss into equivalent circuit models. MOSFETs, IGBTs, and gate driver considerations.
Name:Ch 5: Discontinuous Conduction Mode
Description:The discontinuous conduction mode (DCM) arising from unidirectional switch realization. Analysis of mode boundaries and output voltage.
Name:Ch 6: Converter Circuits
Description:Some well-known converter circuits and their origins. How to incorporate transformer isolation into a dc-dc converter. Analysis and equivalent circuit modeling of transformer-isolated converters.
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.
