B-LearningTool fordc Choppers

Thisworkpresents a software toolinorderto facilitate thelearning ofthedcchoppers. Thistoolconsists ofan integrated web-access setofmultimedia animation-clips which present, inaninteractive way,howthedifferent dcchoppers topologies work.Thedifferent topologies areclassified depending ontheir quadrant operation andthentheusercanrealize the circuit's performance fromthesimplest class-A tothefour quadrant operation class-E converter. To dothis, allcircuit parameters including loadvalues, dutyratio, andfrequency may be selected by theuser.Moreover, theloadincludes an electromotive force (EMF)thatallows understanding theenergy flowbetweenthesourceandtheloadandthen, thequadrant operation. Otheruseful characteristic ofthetoolisthewayin whichthecircuits aredrawnbecause theycanbeshownasa bridge orintheir simplest forminthecaseofonlytheessentials devices beingshown.Theinformation aboutthecurrents and voltages paths isdynamically presented withsliding rules overthe graphsduring simulations indicating thestate ofsemiconductor switches bymeansofchanging colours. Themultimedia system includes documentation on allthesubjects, showingbasic concepts andequations, inpdfformatandlinks toindustrial manufacturers.