1.WhatisPowerElectronics(3)Efficientconversion1(0)VV=DVDC componentofy,(t)=averagevalue:0V,=Tv()dt=DV1DT,+1-D)Tswitch2position:1How to realize physically?With power buffer either one or both of componentsInductor ----- inductanceCapacitor --capacitance
(3)Efficient conversion How to realize physically? With power buffer either one or both of components: Inductor - inductance Capacitor - capacitance 1. What is Power Electronics
1.Whatis Power Electronics(4)ControlandconditioningLoadPowerSwitching converterinput888+SensorH(s)gainTransistorErrorgatedriversignalHyPulse-width8G(s)modulator0(0ACompensatorReferenceVrefdTinputSwitchcanchangetheDClevel
(4) Control and conditioning Switch can change the DC level 1. What is Power Electronics
1.WhatisPowerElectronics(5)StaticmeansAdditionof(ideallylossless)L-Clow-passfilter,forremovalofswitchingharmonics:i(0)589++LsmallVCv(0)Rv(t)100VPim~500W=500WPlosrsmallChoosefiltercutofffrequencyfomuch smallerthan switchingfrequencyf,This circuitisknown asthe"buckconverter
(5) Static means 1. What is Power Electronics
1.Whatis Power Electronics(5)Staticmeansno movable partsCannotbe!Why?Because of havingmovableparts
(5) Static means - no movable parts Cannot be ! Why? Because of having movable parts 1. What is Power Electronics
1.Whatis Power Electronics(5)Staticmeans--semiconductordevicescathodeanodeDAgateCKKSThyristorDiodeIGBTMOSFET(SCR)
(5) Static means - semiconductor devices A K C E G Diode MOSFET IGBT Thyristor (SCR) . . G A K 1. What is Power Electronics