Closed-Loop Hall Sensors with Near Fluxgate Performance for Residual Current Measurement in Photovoltaic Systems

Conference: PCIM Europe 2018 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
06/05/2018 - 06/07/2018 at Nürnberg, Deutschland

Proceedings: PCIM Europe 2018

Pages: 8Language: englishTyp: PDF

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Trombert, Stephan (LEM Switzerland, Switzerland)

Closed-loop fluxgate sensors are widely used to measure small residual currents flowing in large and noisy common mode currents. Their accuracy and ability to provide high galvanic isolation make them the “preferred choice” for residual current measurement (RCM), but with the penalty of a costly and physically large design. This paper describes an innovative, reduced foot print, closed-loop sensor for residual current measurement in photovoltaic (PV) systems based on Hall technology: the new LDSR.