Nonminimum phase compensation in VSC-HVDC systems for fast direct voltage control

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Newly developed VSC-HVDC systems are reaching power levels of up to 1000 MW. At this power level, the nonminimum phase behavior of the VSC-HVDC systems' dc plant becomes a threat to the stability of the direct voltage for fast dc control-loop dynamics. This paper presents a novel compensation scheme, called RHP-zero shifting+damping, designed to deal with the nonminimum phase dynamics of the dc plant by adding additional compensation loops to the current controller of the VSC-HVDC system. The compensation scheme can work along with linear controllers and allows the closed-loop bandwidth of the direct voltage controller to be increased without affecting the direct voltage stability of high-power VSC-HVDC systems. As a result, the direct voltage variations are significantly reduced during power changes in the ac or dc network. The performance of the compensation scheme is evaluated through simulations and corroborated in a 1-kW experimental test bed.

LanguageEnglish
Article number7111331
Pages2535-2543
Number of pages9
JournalIEEE Transactions on Power Delivery
Volume30
Issue number6
Early online date21 May 2015
DOIs
Publication statusPublished - 31 Dec 2015

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Voltage control
Controllers
Electric potential
Phase behavior
Damping
Bandwidth
Compensation and Redress

Keywords

  • direct voltage control
  • HVDC transmission
  • nonminimum phase
  • VSC-HVDC systems

Cite this

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title = "Nonminimum phase compensation in VSC-HVDC systems for fast direct voltage control",
abstract = "Newly developed VSC-HVDC systems are reaching power levels of up to 1000 MW. At this power level, the nonminimum phase behavior of the VSC-HVDC systems' dc plant becomes a threat to the stability of the direct voltage for fast dc control-loop dynamics. This paper presents a novel compensation scheme, called RHP-zero shifting+damping, designed to deal with the nonminimum phase dynamics of the dc plant by adding additional compensation loops to the current controller of the VSC-HVDC system. The compensation scheme can work along with linear controllers and allows the closed-loop bandwidth of the direct voltage controller to be increased without affecting the direct voltage stability of high-power VSC-HVDC systems. As a result, the direct voltage variations are significantly reduced during power changes in the ac or dc network. The performance of the compensation scheme is evaluated through simulations and corroborated in a 1-kW experimental test bed.",
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Nonminimum phase compensation in VSC-HVDC systems for fast direct voltage control. / Campos-Gaona, David; Peña-Alzola, Rafael; Ordonez, Martin.

In: IEEE Transactions on Power Delivery, Vol. 30, No. 6, 7111331, 31.12.2015, p. 2535-2543.

Research output: Contribution to journalArticle

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T1 - Nonminimum phase compensation in VSC-HVDC systems for fast direct voltage control

AU - Campos-Gaona, David

AU - Peña-Alzola, Rafael

AU - Ordonez, Martin

PY - 2015/12/31

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N2 - Newly developed VSC-HVDC systems are reaching power levels of up to 1000 MW. At this power level, the nonminimum phase behavior of the VSC-HVDC systems' dc plant becomes a threat to the stability of the direct voltage for fast dc control-loop dynamics. This paper presents a novel compensation scheme, called RHP-zero shifting+damping, designed to deal with the nonminimum phase dynamics of the dc plant by adding additional compensation loops to the current controller of the VSC-HVDC system. The compensation scheme can work along with linear controllers and allows the closed-loop bandwidth of the direct voltage controller to be increased without affecting the direct voltage stability of high-power VSC-HVDC systems. As a result, the direct voltage variations are significantly reduced during power changes in the ac or dc network. The performance of the compensation scheme is evaluated through simulations and corroborated in a 1-kW experimental test bed.

AB - Newly developed VSC-HVDC systems are reaching power levels of up to 1000 MW. At this power level, the nonminimum phase behavior of the VSC-HVDC systems' dc plant becomes a threat to the stability of the direct voltage for fast dc control-loop dynamics. This paper presents a novel compensation scheme, called RHP-zero shifting+damping, designed to deal with the nonminimum phase dynamics of the dc plant by adding additional compensation loops to the current controller of the VSC-HVDC system. The compensation scheme can work along with linear controllers and allows the closed-loop bandwidth of the direct voltage controller to be increased without affecting the direct voltage stability of high-power VSC-HVDC systems. As a result, the direct voltage variations are significantly reduced during power changes in the ac or dc network. The performance of the compensation scheme is evaluated through simulations and corroborated in a 1-kW experimental test bed.

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KW - HVDC transmission

KW - nonminimum phase

KW - VSC-HVDC systems

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