Mutual interactions and stability analysis of bipolar DC microgrids

Saman Dadjo Tavakoli; Peng Zhang; Xiaonan Lu; Mohsen Hamzeh

doi:10.17775/CSEEJPES.2018.00870

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Mutual interactions and stability analysis of bipolar DC microgrids

更新时间：2025-12-29

- Mutual interactions and stability analysis of bipolar DC microgrids
- CSEE Journal of Power and Energy Systems Vol. 5, Issue 4, Pages: 444-453(2019)
- 作者机构：
  
  1. Department of Electrical Engineering, Universitat Politecnica de Catalunya,Barcelona,Spain
  2. Department of Electrical and Computer Engineering, Stony Brook University, Stony Brook,NY,USA
  3. Department of Electrical and Computer Engineering, Temple University, Philadelphia,PA,USA
  4. Department of Electrical Engineering, University of Tehran, Tehran,Iran
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2018.00870
  CLC：
- Published：2019
- 稿件说明：
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Saman Dadjo Tavakoli, Peng Zhang, Xiaonan Lu, et al. Mutual interactions and stability analysis of bipolar DC microgrids[J]. CSEE Journal of Power and Energy Systems, 2019, 5(4): 444-453.
DOI：

Saman Dadjo Tavakoli, Peng Zhang, Xiaonan Lu, et al. Mutual interactions and stability analysis of bipolar DC microgrids[J]. CSEE Journal of Power and Energy Systems, 2019, 5(4): 444-453. DOI： 10.17775/CSEEJPES.2018.00870.

摘要

Abstract

This paper presents an Multi-Input Multi-Output (MIMO) analysis to investigate the mutual interactions and small-signal stability of bipolar-type dc microgrids. Since bipolar dc microgrid is replete with power-electronic converters

its dynamics can not be understood unless the interactions among control systems of converters are properly investigated. To tackle the challenge

each converter in microgrid is modeled via an MIMO transfer matrix. Then

the MIMO models are combined together based on the interactions among the control systems of source and load converters. From this integrative MIMO model

the mutual interactions between various input-output pairs are quantified using Gershgorin Band theorem. Also

Singular Value Decomposition (SVD) analysis is carried out to estimate the frequency of unstable poles. Test results not only successfully validate the effectiveness of the MIMO method but also show that the control system of voltage balancer has a major impact on the overall stability of bipolar dc microgrid

making it a suitable location for applying damping systems.

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