New Open-Loop Current Transducers with near Closed- Loop Performance

Conference: PCIM Europe 2014 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/20/2014 - 05/22/2014 at Nürnberg, Deutschland

Proceedings: PCIM Europe 2014

Pages: 5Language: englishTyp: PDF

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Jobling, David (LEM Switzerland SA, Chemin des Aulx 8, 1228 Plan-les-Ouates, Switzerland.)

Open-loop current transducers using silicon Hall effect devices are based on a simple design concept and are inexpensive to manufacture, but their simplicity gives rise to some performance limitations. The limitations may be overcome by using a closed-loop architecture for some current ranges, but with the penalty of a more costly and physically larger design. This paper describes new open-loop transducers using a dedicated Application Specific Integrated Circuit (ASIC) which bridge the performance gap between today’s open-loop and closed-loop transducers.