Very Efficient Current Observer for Σ Δ Modulation based Current Transducers for High Bandwidth Current Control
Conference: PCIM Europe 2019 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/07/2019 - 05/09/2019 at Nürnberg, Deutschland
Proceedings: PCIM Europe 2019
Pages: 8Language: englishTyp: PDF
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Authors:
Krah, Jens Onno; Fitz, Eduard (TH Köln, Germany)
Maeder, Pascal (LEM International SA, Geneva, Switzerland)
Abstract:
Instead of analog current transducers in combination with successive-approximation analog-to-digital converters σ-δ technology jointly with digital decimation filter technology is increasingly used. The article describes a new technique how the bit-stream can be formed into a quasi-time-continuous measured value in a very efficient way and similar to a classical observer structure. The laboratory test results are based on an FPGA implementation.