DocumentCode :
3384824
Title :
Energy-saving Flyback Converter for EDM Applications
Author :
Odulio, Carl Michael F ; Sison, Luis G. ; Escoto, Miguel T., Jr.
Author_Institution :
Dept. of Electr. & Electron. Eng., Philippines Univ., Quezon
fYear :
2005
fDate :
21-24 Nov. 2005
Firstpage :
1
Lastpage :
6
Abstract :
Electrical 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 processes 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 the 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.
Keywords :
electrical discharge machining; energy conservation; power convertors; servomechanisms; transformers; EDM power supplies; controlled electric sparks; dielectric combination; electrical discharge machining; energy-saving flyback converter; flyback transformer; high precision machining; micromechanical components manufacturing; servomechanism controls; small output filter capacitors; spark erosion machining; Bridge circuits; Capacitors; Circuit topology; Energy conservation; Flyback transformers; Machining; Manufacturing processes; Micromechanical devices; Power supplies; Sparks; electric discharge machine; flyback converter; regenerative clamp; switch mode power supply;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
TENCON 2005 2005 IEEE Region 10
Conference_Location :
Melbourne, Qld.
Print_ISBN :
0-7803-9311-2
Electronic_ISBN :
0-7803-9312-0
Type :
conf
DOI :
10.1109/TENCON.2005.301166
Filename :
4085315
Link To Document :
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