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Role Of Power Electronics In Providing Sustainable Electric Energy As Discussed In The Introductory Chapter Of This Textbook, Power Electronics Is An Enabling Technology For Powering Information Technology And Making Factory Automation Feasible. In Addition, Power Electronics Has A Crucial Role To Play In Providing Sustainable Electric Energy. Most Scientists Now Believe That Carbon-based Fuels For Energy Production Con- Tribute To Climate Change, Which Is A Serious Threat Facing Human Civilization. In The United States, The Department Of Energy Reports That Approximately 40% Of All The Energy Consumed Is First Converted Into Electricity. Potentially, Use Of Electric And Plug-in Hybrid Cars, High Speed Rails, And So On May Increase This To Even 60%. Therefore, It Is Essential That We Generate Electricity From Renewable Sources Such As Wind And Solar, Which At Present Represent Only Slightly Over 4%, Build The Next-generation Smarter And Robust Grid To Utilize Renewable Resources Often In Remote Locations, And Use Electricity In More Energy-efficient Ways. Undoubtedly, Using Electricity Efficiently And Generating It From Renewable Sources Are The Twin Pillars Of Sustainability, And As Described In This Textbook, Power Electronic Systems Are A Key To Them Both! This Textbook Focuses On Power Electronic Systems As One Of The Topics In An Integrated Electric Energy Systems Curriculum Consisting Of Power Electronics, Power Systems And Electric Machines And Drives. This Textbook Follows A Top-down Systems- Level Approach To Power Electronics To Highlight Interrelationships Between These Sub- Fields Within This Curriculum, And Is Intended To Cover Both The Fundamentals And Practical Design In A Single-semester Course. This Textbook Follows A Building-block Approach To Power Electronics That Allows An In-depth Discussion Of Several Important Topics That Are Left Out In A Conventional Course, For Example, Designing Feedback Control, Power-factor-correction Circuits, Soft- Sw