INTRODUCTION TO POWER ELECTRONICS SYSTEMS精编.pdfVIP

Chapter 1 INTRODUCTION TO POWER ELECTRONICS SYSTEMS • Definition and concepts • Application • Power semiconductor switches • Gate/base drivers • Losses • Snubbers Power Electronics and 1 Drives (Version 3-2003). Dr. Zainal Salam, UTM-JB Definition of Power Electronics DEFINITION: To convert, i.e to p rocess and control the flow of electric power by supplying voltage s and currents in a form that is optimally suited for user loads. • Basic block diagram POWER POWER INP UT OUTP UT v , i i i Power v , i o o Processor Source Load measurement Controller reference • Building Blocks: – Input Power, Output Power – Power Processor – Controller Power Electronics and 2 Drives (Version 3-2003). Dr. Zainal Salam, UTM-JB Power Electronics (PE) Systems • To convert electrical energy from one form to another, i.e. from the source to load with: – highest efficiency, – highest availability – highest reliability – lowest cost, – smallest size – least weight. • Static applications – involves non-rotating or moving mechanical components. – Examples: • DC Power supply, Un