电力电子技术第5版王兆安英文Chapter01章节.ppt

电力电子技术第5版王兆安英文Chapter01章节.ppt

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Outline What is power electronics? The history Applications A simple example About this course What is power electronics? Definition Relation with information electronics The interdisciplinary nature Position and significance in the human society Definition Power Electronics: A more exact explanation: Conversion of electric power Other names for electric power converter: -Power converter -Converter -Switching converter -Power electronic circuit -Power electronic converter Classification of power converters Power electronic system Generic structure of a power electronic system Typical power sources and loads for a power electronic system The task of power electronics has been recently extended to also ensuring the currents and power consumed by power converters and loads to meet the requirement of electric energy sources. Relation with information electronics A Classification of electronics by processing object The interdisciplinary nature William E. Newell’s description Relation with multiple disciplines Power electronics is currently the most active discipline in electric power engineering worldwide. Position and significance in the human society Electric power is used in almost every aspect and everywhere of modern human society. Electric power is the major form of energy source used in modern human society. The objective of power electronics is exactly about how to use electric power, and how to use it effectively and efficiently, and how to improve the quality and utilization of electric power. Power electronics and information electronics make two poles of modern technology and human society—— information electronics is the brain,and power electronics is the muscle. The history The thread of the power electronics history precisely follows and matches the break-through and evolution of power electronic devices Applications Industrial Transportation Utility systems Power supplies for

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