A Fault-Tolerant, Passivity-Based Controller Enhanced by the Equilibrium-to-Equilibrium Maneuver Capability for the DC-Voltage Power Port VSC in Multi-Infeed AC/DC Modernized Grids

M. Davari, W. Gao, F. Blaabjerg

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

27 Downloads (Pure)

Resumé

Due to simplicity, practicality, and absence of communication needs, stabilizing the dc voltage via a dc-voltage power port voltage-sourced converter (VSC) connected to an ac grid (also known as the master VSC in some works of literature), is a favorable option in multi-infeed ac/dc modernized grids (MI-AC/DC-MGs). However, in MI-AC/DC-MGs, several devices may be connected/disconnected to/from the dc link. This affects the effective inductance and capacitance seen from the dc side of the dc-voltage power port VSC. Moreover, the use of dc-side LC-filter to improve the power quality aspects associated with the power feeding to the dc loads and with the power generated by dc generators is increasing. Such factors complicate the dynamics of the dc-voltage power port VSC and threaten its stability, as well as its transient performance. This article proposes an enhanced nonlinear control approach (compared to existing methodologies) for the dc-voltage power port VSC in MI-AC/DC-MGs considering the following very influential factors. First, it considers a nonlinear control approach considering the presence of the dc-side energy-storing components with uncertain parameters. The proposed controller accounts for complete nonlinear dynamics of the dc-voltage power port VSC with a dc-side inductance without any cascaded control structure. Thus, it “globally” stabilizes nonlinear dynamics by means of a passivity-based design approach with equilibrium-to-equilibrium maneuver capability. Second, it considers fault-tolerant control of the primary control of such systems in order to enhance the MI-AC/DC-MGs’ resiliency, which is highly required to improve the reliability of MI-AC/DC-MGs of the future. Making the primary control of the dc link “fault-tolerant” is a vital factor in order to have better-guaranteed power quality in the MI-AC/DC-MGs undergoing many types of events. This will cause MI-AC/DC-MGs to have fault ride-through (FRT) feature. Also, this feature, which is propose.
OriginalsprogEngelsk
TidsskriftIEEE Journal of Emerging and Selected Topics in Power Electronics
ISSN2168-6777
DOI
StatusE-pub ahead of print - maj 2019

Fingerprint

Controllers
Electric potential
Power quality
Inductance
Capacitance
Communication

Emneord

  • Voltage control
  • Power quality
  • Power system stability
  • Nonlinear dynamical systems
  • Stability analysis
  • Inductors
  • Transient analysis

Citer dette

@article{feb8049179b449a9abd8787880133163,
title = "A Fault-Tolerant, Passivity-Based Controller Enhanced by the Equilibrium-to-Equilibrium Maneuver Capability for the DC-Voltage Power Port VSC in Multi-Infeed AC/DC Modernized Grids",
abstract = "Due to simplicity, practicality, and absence of communication needs, stabilizing the dc voltage via a dc-voltage power port voltage-sourced converter (VSC) connected to an ac grid (also known as the master VSC in some works of literature), is a favorable option in multi-infeed ac/dc modernized grids (MI-AC/DC-MGs). However, in MI-AC/DC-MGs, several devices may be connected/disconnected to/from the dc link. This affects the effective inductance and capacitance seen from the dc side of the dc-voltage power port VSC. Moreover, the use of dc-side LC-filter to improve the power quality aspects associated with the power feeding to the dc loads and with the power generated by dc generators is increasing. Such factors complicate the dynamics of the dc-voltage power port VSC and threaten its stability, as well as its transient performance. This article proposes an enhanced nonlinear control approach (compared to existing methodologies) for the dc-voltage power port VSC in MI-AC/DC-MGs considering the following very influential factors. First, it considers a nonlinear control approach considering the presence of the dc-side energy-storing components with uncertain parameters. The proposed controller accounts for complete nonlinear dynamics of the dc-voltage power port VSC with a dc-side inductance without any cascaded control structure. Thus, it “globally” stabilizes nonlinear dynamics by means of a passivity-based design approach with equilibrium-to-equilibrium maneuver capability. Second, it considers fault-tolerant control of the primary control of such systems in order to enhance the MI-AC/DC-MGs’ resiliency, which is highly required to improve the reliability of MI-AC/DC-MGs of the future. Making the primary control of the dc link “fault-tolerant” is a vital factor in order to have better-guaranteed power quality in the MI-AC/DC-MGs undergoing many types of events. This will cause MI-AC/DC-MGs to have fault ride-through (FRT) feature. Also, this feature, which is propose.",
keywords = "Voltage control, Power quality, Power system stability, Nonlinear dynamical systems, Stability analysis, Inductors, Transient analysis",
author = "M. Davari and W. Gao and F. Blaabjerg",
year = "2019",
month = "5",
doi = "10.1109/JESTPE.2019.2917650",
language = "English",
journal = "I E E E Journal of Emerging and Selected Topics in Power Electronics",
issn = "2168-6777",
publisher = "IEEE",

}

TY - JOUR

T1 - A Fault-Tolerant, Passivity-Based Controller Enhanced by the Equilibrium-to-Equilibrium Maneuver Capability for the DC-Voltage Power Port VSC in Multi-Infeed AC/DC Modernized Grids

AU - Davari, M.

AU - Gao, W.

AU - Blaabjerg, F.

PY - 2019/5

Y1 - 2019/5

N2 - Due to simplicity, practicality, and absence of communication needs, stabilizing the dc voltage via a dc-voltage power port voltage-sourced converter (VSC) connected to an ac grid (also known as the master VSC in some works of literature), is a favorable option in multi-infeed ac/dc modernized grids (MI-AC/DC-MGs). However, in MI-AC/DC-MGs, several devices may be connected/disconnected to/from the dc link. This affects the effective inductance and capacitance seen from the dc side of the dc-voltage power port VSC. Moreover, the use of dc-side LC-filter to improve the power quality aspects associated with the power feeding to the dc loads and with the power generated by dc generators is increasing. Such factors complicate the dynamics of the dc-voltage power port VSC and threaten its stability, as well as its transient performance. This article proposes an enhanced nonlinear control approach (compared to existing methodologies) for the dc-voltage power port VSC in MI-AC/DC-MGs considering the following very influential factors. First, it considers a nonlinear control approach considering the presence of the dc-side energy-storing components with uncertain parameters. The proposed controller accounts for complete nonlinear dynamics of the dc-voltage power port VSC with a dc-side inductance without any cascaded control structure. Thus, it “globally” stabilizes nonlinear dynamics by means of a passivity-based design approach with equilibrium-to-equilibrium maneuver capability. Second, it considers fault-tolerant control of the primary control of such systems in order to enhance the MI-AC/DC-MGs’ resiliency, which is highly required to improve the reliability of MI-AC/DC-MGs of the future. Making the primary control of the dc link “fault-tolerant” is a vital factor in order to have better-guaranteed power quality in the MI-AC/DC-MGs undergoing many types of events. This will cause MI-AC/DC-MGs to have fault ride-through (FRT) feature. Also, this feature, which is propose.

AB - Due to simplicity, practicality, and absence of communication needs, stabilizing the dc voltage via a dc-voltage power port voltage-sourced converter (VSC) connected to an ac grid (also known as the master VSC in some works of literature), is a favorable option in multi-infeed ac/dc modernized grids (MI-AC/DC-MGs). However, in MI-AC/DC-MGs, several devices may be connected/disconnected to/from the dc link. This affects the effective inductance and capacitance seen from the dc side of the dc-voltage power port VSC. Moreover, the use of dc-side LC-filter to improve the power quality aspects associated with the power feeding to the dc loads and with the power generated by dc generators is increasing. Such factors complicate the dynamics of the dc-voltage power port VSC and threaten its stability, as well as its transient performance. This article proposes an enhanced nonlinear control approach (compared to existing methodologies) for the dc-voltage power port VSC in MI-AC/DC-MGs considering the following very influential factors. First, it considers a nonlinear control approach considering the presence of the dc-side energy-storing components with uncertain parameters. The proposed controller accounts for complete nonlinear dynamics of the dc-voltage power port VSC with a dc-side inductance without any cascaded control structure. Thus, it “globally” stabilizes nonlinear dynamics by means of a passivity-based design approach with equilibrium-to-equilibrium maneuver capability. Second, it considers fault-tolerant control of the primary control of such systems in order to enhance the MI-AC/DC-MGs’ resiliency, which is highly required to improve the reliability of MI-AC/DC-MGs of the future. Making the primary control of the dc link “fault-tolerant” is a vital factor in order to have better-guaranteed power quality in the MI-AC/DC-MGs undergoing many types of events. This will cause MI-AC/DC-MGs to have fault ride-through (FRT) feature. Also, this feature, which is propose.

KW - Voltage control

KW - Power quality

KW - Power system stability

KW - Nonlinear dynamical systems

KW - Stability analysis

KW - Inductors

KW - Transient analysis

U2 - 10.1109/JESTPE.2019.2917650

DO - 10.1109/JESTPE.2019.2917650

M3 - Journal article

JO - I E E E Journal of Emerging and Selected Topics in Power Electronics

JF - I E E E Journal of Emerging and Selected Topics in Power Electronics

SN - 2168-6777

ER -