E第1章 电力电子器件概述1.ppt

Chapter 1Power Electronic Devices:12 hours 1.1 An introductory overview of power electronic devices 1.2 Uncontrolled device — power diode 1.3 Half-controlled device— thyristor 1.4 Typical fully-controlled devices 1.5 Other new power electronic devices 1.6 Drive circuit for power electronic devices 1.7 Protection of power electronic devices 1.8 Series and parallel connections of power electronic devices 1.1 An introductory overview of power electronic devices The concept and features Configuration of systems using power electronic devices Classifications Major topics The concept of power electronic devices  Features of power electronic devices The electric power that power electronic device deals with is usually much larger than that the information electronic device does.(能处理电功率的能力，一般远大于处理信息的电子器件) Usually working in switching states to reduce power losses Features of power electronic devices Need to be controlled by information electronic circuits.(往往需要由信息电子电路来控制) Very often, drive circuits are necessary to interface between information circuits and power circuits. Dissipated power loss usually larger than information electronic devices— special packaging and heat sink are necessary.(自身的功率损耗远大于信息电子器件，一般都要安装散热器) Power losses on power semiconductor devices Total power loss on power semiconductor =conduction loss + turn-off loss + off-state loss + turn-on loss (on-state loss) Configuration of systems using power electronic devices Protection circuit is also very often used in power electronic system especially for the expensive power semiconductors. Terminals of a power electronic device Control signal from drive circuit must be connected between control terminal and a fixed power circuit terminal (therefore called common terminal(通用端) ). A classification of power electronic devices Other classifications Major topics for each device Appearance, structure, and symbol Physics of operation Characteristics :Switching characteri