Accurate open-loop impedance model of single-phase voltage source inverter (vsi) considering the dead-Time effects

Mengfan Zhang, Dongsheng Yang, Xiongfei Wang

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

Abstract

The impedance-based approach has been widely adopted to analyze converter-grid interactions. The dead-Time have a significant impact on the output impedance of the voltage source inverter (VSI), which will further affect the stability of the grid-connected VSI. The dead-Time can be elaborated as a nonlinear block, which highly depends on the output current. Moreover, the current ripple also has an impact on the dead-Time effect especially in light load condition, which is usually overlooked in previous work. This paper presents an accurate analytical model to characterize the dead-Time effect considering current ripple, which is established based on the double input describing function (DIDF). Both the simulation and experimental results confirm the accuracy of the proposed impedance model considering the dead-Time effects.
Original languageEnglish
Title of host publicationProceedings of 2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL)
Number of pages5
PublisherIEEE Press
Publication dateJun 2019
Article number8769666
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

  • Dead-Time
  • Double input describing function
  • Impedance model
  • Voltage source inverter

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    Zhang, M., Yang, D., & Wang, X. (2019). Accurate open-loop impedance model of single-phase voltage source inverter (vsi) considering the dead-Time effects. In Proceedings of 2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL) [8769666] IEEE Press. IEEE Workshop on Control and Modeling for Power Electronics (COMPEL) https://doi.org/10.1109/COMPEL.2019.8769666