Record Details     « New Search       Brief Record Full Record MARC Record     Bibliographic Data 001    UPD-00000528682 005    20090717041138.0 008    070925s2004 ph eng 245 10 $aCurrent mode controlled power supply utilizing the Flyback topology for EDM applications /$cCarl Michael F. Odulio. 100 1# $aOdulio, Carl Michael F. 040 ## $aDML 041 ## $aeng 042 ## $aDMLUC 090 ## $aLG 995 2004 E64$bO38 260 ## $c2004. 300 ## $a[ix], 65 leaves :$bcol. ill. 502 ## $aThesis (M.S. Electrical Engineering)--University of the Philippines, Diliman. 520 ## $aElectrical discharge machining (EDM) uses controlled electric sparks to erode the metal in a workpiece, and this method is now a well established machining process for high power applications. EDM power supplies utilizing different topologies for high power applications (e.g. full bridge configuration) are widely available. Through the years, EDM process have increasingly been used in high precision machining and in manufacturing micromechanical components, with new low power topologies being investigated for the latter. We implemented a current mode flyback converter for use in low power EDM applications. This topology has an energy conservation feature and removes the need for output bulk capacitors. Energy used in the erosion process will come from energy stored in the flyback transformer and will be transferred to the small output filter capacitors and the effective capacitance of the tool, workpiece, and dielectric combination. A servomechanism that controls the arc distance will determine the output voltage. We have developed an EDM power supply prototype utilizing the flyback topology for low power applications with minimal components count and inherent protection under short circuit conditions. Our work includes the design, fabrication, and characterization of the whole system. We compared the efficiency and quality of work of our proposed topology with that of a linear converter. 650 #0 $aElectric metal-cutting. 650 #0 $aSwitching power supplies. 650 #0 $aElectric current converters. 905 ## $aFI 852 ## $aUP$bDENG-II$hLG 995 2004 E64$iO38$pE2000000288$rRoom-Use Only$xE-566t 905 ## $aUP 852 ## $aUP$bDARCHIVES$hLG 995 2004 E64 O38$rRoom-Use Only$xUARD-11111T 852 ## $aUP$bDENG-II$hLG 995 2004 E64$iO38$pE2000000288$rRoom-Use Only$xE-566t 842 ## $aThesis           Physical Location University of the Philippines Diliman Main Library: University Archives LG 995 2004 E64 O38 Diliman: College of Engineering Library II LG 995 2004 E64 / O38           Digital Copy Not Available          Add to Book Cart  |   Download MARC