FPGA predictive control for single-phase active NPC grid inverters with multi-sampling technique

Chin Chang Kuo, Ying-Yu Tzou

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

This paper presents an FPGA predictive control scheme for the active T-type neutral-point-clamped (AT-NPC) inverter in applications to grid inverters. Predictive control technique benefits from its fast response but also suffers with its high sensitivity to measurement noises and parameter uncertainties. To overcome the sensitivity problem of predictive controller, a multi-sampling strategy is developed to get its instantaneous average value and at the same to minimize possible sampling errors during the sampling process. The proposed control scheme can combine advantages of digital control with flexibility and accuracy and analog control with fast response. The designed predictive controller has been realized using a mixed-signal FPGA SmartFusion® A2F500 from Microsemi. Experimental verification is carried out with a 3kW single-phase AT-NPC grid inverter. Experimental results show that the proposed control scheme can achieve both fast dynamic responses and high quality current regulation with THD close to its theoretical limits.

Original languageEnglish
Title of host publicationProceedings of the IECON 2016 - 42nd Annual Conference of the Industrial Electronics Society
PublisherIEEE Computer Society
Pages2295-2300
Number of pages6
ISBN (Electronic)9781509034741
DOIs
StatePublished - 21 Dec 2016
Event42nd Conference of the Industrial Electronics Society, IECON 2016 - Florence, Italy
Duration: 24 Oct 201627 Oct 2016

Publication series

NameIECON Proceedings (Industrial Electronics Conference)

Conference

Conference42nd Conference of the Industrial Electronics Society, IECON 2016
CountryItaly
CityFlorence
Period24/10/1627/10/16

Keywords

  • Active T-type neutral-point-clamped (AT-NPC) inverter
  • FPGA predictive control
  • Grid inverter
  • Multi-sampling
  • Multilevel inverters

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    Kuo, C. C., & Tzou, Y-Y. (2016). FPGA predictive control for single-phase active NPC grid inverters with multi-sampling technique. In Proceedings of the IECON 2016 - 42nd Annual Conference of the Industrial Electronics Society (pp. 2295-2300). [7793060] (IECON Proceedings (Industrial Electronics Conference)). IEEE Computer Society. https://doi.org/10.1109/IECON.2016.7793060