An Impedance-Based Stability Analysis Method for Paralleled Voltage Source Converters

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

44 Citations (Scopus)
1438 Downloads (Pure)

Abstract

This paper analyses the stability of paralleled voltage source converters in AC distributed power systems. An impedance-based stability analysis method is presented based on the Nyquist criterion for multiloop system. Instead of deriving the impedance ratio as usual, the system stability is assessed based on a series of Nyquist diagrams drawn for the terminal impedance of each converter. Thus, the effect of the right half-plane zeros of terminal impedances in the derivation of impedance ratio for paralleled source-source converters is avoided. The interaction between the terminal impedance of converter and the passive network can also be predicted by the Nyquist diagrams. This method is applied to evaluate the current and voltage controller interactions of converters in both grid-connected and islanded operations. Simulations and experimental results verify the effectiveness of theoretical analysis.
Original languageEnglish
Title of host publicationProceedings of the 2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE-Asia)
Number of pages7
PublisherIEEE Press
Publication date2014
Pages1529-1535
DOIs
Publication statusPublished - 2014
Event2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE-ASIA) - Hiroshima, Japan
Duration: 18 May 201421 May 2014

Conference

Conference2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE-ASIA)
CountryJapan
CityHiroshima
Period18/05/201421/05/2014

Keywords

  • Impedance-based
  • Nyquist criterion
  • Paralleled voltage source converters
  • Stability

Fingerprint Dive into the research topics of 'An Impedance-Based Stability Analysis Method for Paralleled Voltage Source Converters'. Together they form a unique fingerprint.

Cite this