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Energies
Special Issues
Small-Signal Modeling and Stability of Power Converter Systems
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Small-Signal Modeling and Stability of Power Converter Systems

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "F3: Power Electronics".

Deadline for manuscript submissions: closed (30 November 2021) | Viewed by 4952

Special Issue Editors

Prof. Dr. Paolo Mattavelli

E-Mail Website
Guest Editor
Department of Management and Engineering, University of Padova, Stradella S. Nicola, 3, 36100 Vicenza, Italy
Interests: analysis, modeling and analog and digital control of power converters; grid-connected converters for renewable energy systems and micro-grids; high-temperature and high-power density power electronics
Dr. Zeng Liu

E-Mail Website
Guest Editor
Department of Industrial Automation, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
Interests: control of parallel and grid-tied storage converters in distributed generation; small-signal modeling and stability analysis of AC and DC power electronics systems; system design, high performance control of high power isolated DC-DC converters

Special Issue Information

Dear Colleagues,

Recently, more and more electrical power is being processed by the power converters for integrating renewable energy and improving power efficiency. The penetration of power converters in the electrical power grids will introduce tight interaction among power converters, which deteriorates the stability operation of systems. The small-signal model of power converter systems is an effective solution to analyze and predict system stability and then to stabilize system oscillations.

This Special Issue targets the small-signal modeling and stability of power converter systems. Prospective authors are invited to submit original contributions or survey papers for peer review for publication in Energies. Topics of interest of this Special Issue include but are not limited to following keywords.

Prof. Dr. Paolo Mattavelli
Dr. Zeng Liu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • small-signal modeling of grid-following and grid-forming converters
  • small-signal modeling of modular converters
  • small-signal modeling of multiple converter systems
  • impedance-based small-signal stability analysis of grid-converter systems
  • impedance-based small-signal stability analysis of multiple converter systems
  • state-space-based small-signal stability analysis of multiple converter systems
  • stability monitoring of power converter systems
  • stabilization of power converter systems

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Published Papers (2 papers)

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Research

18 pages, 3905 KiB  
Article
Weighted Bandwidth Method for Stability Assessment of Complex DC Power Systems on Ships
by Daniele Bosich, Giovanni Giadrossi, Stefano Pastore and Giorgio Sulligoi
Energies 2022, 15(1), 258; https://doi.org/10.3390/en15010258 - 31 Dec 2021
Cited by 10 | Viewed by 2319
Abstract
In shipboard DC grids, tightly controlled load converters can impair the system stability, thus provoking the ship blackout. Conversely, load converters regulated by low control bandwidths are capable of inducing a stabilizing action. This compensation is verifiable if the loads are few. On [...] Read more.
In shipboard DC grids, tightly controlled load converters can impair the system stability, thus provoking the ship blackout. Conversely, load converters regulated by low control bandwidths are capable of inducing a stabilizing action. This compensation is verifiable if the loads are few. On the contrary, the balancing of control dynamics is hardly evaluated if the bus feeds multiple (i.e., hundreds or more) DC controlled loads. In this paper, the weighted bandwidth method (WBM) is presented to assess the small-signal stability of a complex shipboard power system by aggregating the multiple converters into two sets of controlled loads. Once the validity of the aggregation is proven, a stability study is performed on the two-loads system. As the last system is more inclined to instability than the initial multiple-loads system, the verification of the two-loads stability criterion guarantees that the shipboard DC grid also remains stable. Finally, emulations on HIL verify the proposed stability assessment thus providing the first unique verification of WBM. Full article
(This article belongs to the Special Issue Small-Signal Modeling and Stability of Power Converter Systems)
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17 pages, 7854 KiB  
Article
Equivalent Impedance Calculation Method for Control Stability Assessment in HVDC Grids
by Fisnik Loku, Patrick Düllmann, Christina Brantl and Antonello Monti
Energies 2021, 14(21), 6899; https://doi.org/10.3390/en14216899 - 21 Oct 2021
Cited by 3 | Viewed by 1912
Abstract
A major challenge in the development of multi-vendor HVDC networks are converter control interactions. While recent publications have reported interoperability issues such as persistent oscillations for first multi-vendor HVDC setups with AC-side coupling, multi-terminal HVDC networks are expected to face similar challenges. To [...] Read more.
A major challenge in the development of multi-vendor HVDC networks are converter control interactions. While recent publications have reported interoperability issues such as persistent oscillations for first multi-vendor HVDC setups with AC-side coupling, multi-terminal HVDC networks are expected to face similar challenges. To investigate DC-side control interactions and mitigate possible interoperability issues, several methods based on the converters’ and DC network’s impedances have been proposed in literature. For DC network’s impedance modelling, most methods require detailed knowledge of all converters’ design and controls. However, in multi-vendor HVDC networks, converter control parameters are not expected to be shared due to proprietary reasons. Therefore, to facilitate impedance-based stability analyses in multi-vendor MTDC networks, methods that do not require the disclosure of the existing converter controls are needed. Here, detailed impedance measurements can be applied; however, they are time-consuming and require new measurement for a single configuration change. This paper proposes an equivalent impedance calculation method suitable for multi-vendor DC networks, which for available black-box models or converter impedance characteristics can be modularly applied for various network configurations, including different control settings and operating points, while significantly reducing the required time for obtaining an equivalent DC network impedance. Full article
(This article belongs to the Special Issue Small-Signal Modeling and Stability of Power Converter Systems)
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