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Pulse Electronics To Present Two Papers At PCIM 2014 Nuremberg, Germany

Pulse Electronics Corporation (NYSE: PULS), a leading provider of electronic components, will present papers at two poster sessions at the PCIM Europe Conference in Nuremberg, Germany. Arc Fault Detection Using Rogowski Coils will be presented at the Renewable Energy Systems poster session on Tuesday, May 20, 2014 at 3:30 P.M. The second poster, Design of a High Efficiency Planar Transformer with Deep Interleave Flat Coil Windings for >250W Converter Topologies, will be presented at the Converters poster session on Wednesday, May 21, 2014 at 3:30 P.M. Both papers will be presented by Gerard Healy, field applications engineer, Power Division, Pulse Electronics.

In solar power inverters, arc fault failures have become a recognized problem and arc fault detection will soon be required for all string inverters. Accurately detecting arc faults requires sensing the current for a specific signature waveform. Rogowski coils are ideal for sensing the signal because they are immune to DC current, have unlimited saturation characteristics, and are fully isolated. This paper details how a Rogowski coil can be used to detect arc faults and can provide a system with the information that a fault has occurred so it can be arrested.

Basic planar winding structures are not optimum for converter topologies for higher power (>250W) applications. Two new advances in planar transformers have been created to address this. Finite element analysis of the flux paths in traditional planar cores can be redesigned for a more uniform distribution, increasing the effective core cross-sectional area within a given geometry. Additionally, a novel winding technique can be implemented that will reduce the leakage inductance and increase the throughput power. This poster session addresses these new generation planar transformers.

“Although these topics, planar transformers and current sensors, are quite different, the solutions are based on similar magnetic core winding principles,” explained Gerard Healy. “Pulse Electronics has adapted and evolved these basic principles, like the Rogowski Coil, to create innovative technologies and products. I am looking forward to presenting and discussing the game-changing data for arc fault sensors using Rogowski coils as well as these ground-breaking findings about the advancements in planar transformers.”

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