Paper Title:
Research on Highly Efficient EDM Pulse Power Supply and Its Experiments
  Abstract

Their efficiency and their power factor of conventional independent electrical discharge machining (EDM) pulse power supplies with the current-limiting-resistor circuit is so low that they do not meet the need of advanced EDM technologies. The design of highly efficient EDM pulse power supply based on switching circuit pulse width modulation current closed-loop principle has been initiated. It is composed of such three stages as a single-phase active power factor correction preregulator, a full-bridge phase shift resonant converter based on machining current closed-loop control and a pulse generator based on machining sequence control. Therefore, the efficiency of the new system is considerably increased to about 70%, its weight and size is decreased much. Its power factor is a great deal increased to about 0.95. Experiment results have demonstrated that the highly efficient EDM pulse power supply is capable of low electrode wear, high speed, stable machining.

  Info
Periodical
Key Engineering Materials (Volumes 291-292)
Edited by
Yury M. Baron, Jun'ichi Tamaki and Tsunemoto Kuriyagawa
Pages
567-572
DOI
10.4028/www.scientific.net/KEM.291-292.567
Citation
Y. K. Wang, B. Y. Song, W. S. Zhao, "Research on Highly Efficient EDM Pulse Power Supply and Its Experiments", Key Engineering Materials, Vols. 291-292, pp. 567-572, 2005
Online since
August 2005
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Price
$32.00
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