An FPGA Kalman-MPPT implementation adapted in SST-based dual active bridge converters for DC microgrids systems

Guillermo Becerra-Nuñez, Alejandro Castillo-Atoche, Javier Vazquez-Castillo, Asim Datta, Renan Quijano-Cetina, Rafael Peña-Alzola, Roberto Carrasco-Alvarez, Edith Osorio-de-la-Rosa

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Abstract

The design of digital hardware controllers for the integration of renewable energy sources in DC microgrids is a research topic of interest. In this paper, a Kalman filter-based maximum power point tracking algorithm is implemented in an FPGA and adapted in a dual active bridge (DAB) converter topology for DC microgrids. This approach uses the Hardware/Software (HW/SW) co-design paradigm in combination with a pipelined piecewise polynomial approximation design of the Kalman-maximum power point tracking (MPPT) algorithm instead of traditional lookup table (LUT)-based methods. Experimental results reveal a good integration of the Kalman-MPPT design with the DAB-based converter, particularly during irradiation and temperature variations due to changes in weather conditions, as well as a good balanced hardware design in complexity and area-time performance compared to other state-of-art FPGA designs.
Original languageEnglish
Number of pages12
JournalIEEE Access
Early online date27 Oct 2020
DOIs
Publication statusE-pub ahead of print - 27 Oct 2020

Keywords

  • DC-DC power converters
  • power generation
  • field programmable gate arrays

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