A new bipolar power supply for spark erosion based on a series-parallel resonant inverter

Author

Casanueva, Rosario ; Azcondo, Francisco J. ; Brañas, Christian

Author_Institution

Dept. of Electron. Technol., Univ. of Cantabria, Santander

fYear

2008

fDate

24-28 Feb. 2008

Firstpage

1904

Lastpage

1909

Abstract

A high-frequency resonant inverter is designed as an ac current source for a new electrical discharge machining power supply. The inverter is operated at zero voltage switching, thus the inverter presents minimum switching losses. The steady-state analysis and design of the circuit are described in the paper. The proposed alternating EDM power supply is intended for using with water as the dielectric fluid. The objective of the bipolar output is to minimize the electrolysis effect on the workpiece, which produces its oxidation and corrosion, and to achieve a stable machining with improved metal removal rate and surface finish.

Keywords

corrosion; electrical discharge machining; electrolysis; oxidation; resonant invertors; switching convertors; zero voltage switching; bipolar power supply; corrosion; dielectric fluid; electrical discharge machining; electrolysis effect; machining power supply; metal removal rate; oxidation; series-parallel resonant inverter; spark erosion; surface finish; switching losses; zero voltage switching; Circuits; Dielectrics; Fault location; Machining; Power supplies; Resonant inverters; Sparks; Steady-state; Switching loss; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2008. APEC 2008. Twenty-Third Annual IEEE

Conference_Location

Austin, TX

ISSN

1048-2334

Print_ISBN

978-1-4244-1873-2

Electronic_ISBN

1048-2334

Type

conf

DOI

10.1109/APEC.2008.4522987

Filename

4522987