Impact of Nonlinear Dynamics on Converter DQ Impedance Measurement

Hong Gong, Dongsheng Yang, Xiongfei Wang

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Abstract

This paper investigates the difference in the DQ impedance measurement using different perturbation signals. It is revealed that the nonlinear dynamics of converters in the dq-frame generate frequency-coupling responses which are overlapped at different frequencies when the multi-frequency perturbation is injected, leading to the inaccurate impedance measurement result. On the contrary, with the single-frequency injection, the frequency-coupling responses can be easily identified and removed in the impedance measurement. Simulation and experimental results confirm the correctness of the theoretical analysis.
Original languageEnglish
Title of host publicationProceedings of 2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL)
Number of pages6
PublisherIEEE Press
Publication dateJun 2019
Article number8769701
ISBN (Electronic)978-1-7281-1842-0
DOIs
Publication statusPublished - Jun 2019
Event2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL) - Toronto, Canada
Duration: 17 Jun 201920 Jun 2019

Conference

Conference2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL)
CountryCanada
CityToronto
Period17/06/201920/06/2019
SeriesIEEE Workshop on Control and Modeling for Power Electronics (COMPEL)
ISSN1093-5142

Keywords

  • Impedance measurement
  • Multi-frequency injection
  • Nonlinear dynamics
  • Singlefrequency injection
  • Small-signal model

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  • Cite this

    Gong, H., Yang, D., & Wang, X. (2019). Impact of Nonlinear Dynamics on Converter DQ Impedance Measurement. In Proceedings of 2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL) [8769701] IEEE Press. IEEE Workshop on Control and Modeling for Power Electronics (COMPEL) https://doi.org/10.1109/COMPEL.2019.8769701