Microelectronics Engineering Group

Microelectronics Engineering Group

Electronics Technology, Systems and Automation Engineering Department University of Cantabria
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Title:High Spark, Low Loss. Paralleled LCsCp Resonant Converters for Spark Erosion Applications
Type:International Paper
Where:IEEE Industry Applications Magazine
Authors: Rosario Casanueva
Francisco J. Azcondo
Christian Brañas
Salvador Bracho
R&D Lines: Design of electronic circuits for industrial applications
Projects: Sistemas de alimentación para lámparas de descarga y equipos de electroer...
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Abstract:In this paper, the analysis, design, and experimental
results of the parallel connection of LCsCp resonant converters
for a spark erosion power supply are presented. To increase the
power of the spark erosion power supply, synchronous (same
frequency and phase) and interleaved (same frequency and phase
shift) parallel connection of N LCsCp resonant converters are
proposed. In this way, the resulting power system is the parallel
connection of the required modules operating in current source
mode. From the analysis of the proposal, the design of a power
supply for spark erosion, consisting of two modules is presented.
Three operation modes are defined: 1-module, 2-synchronous
modules and 2-interleaved modules. The performance of the
system has been verified in spark erosion operations. Results
confirm that synchronous operation provides faster metal
removal rate as the discharge energy has been increased, which is
suitable for roughing operations, and the interleaved operation
provides a reduction in the output current ripple and better
surface finish, which is suitable for finishing operations.
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