On Secondary Control Approaches for Voltage Regulation in DC Microgrids

Saeed Peyghami, Hossein Mokhtari, Pooya Davari, Pon Chiang Loh, Frede Blaabjerg

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Resumé

Centralized or decentralized secondary controller is commonly employed to regulate the voltage drop raised by the primary controller. However, in the case of high capacity MGs and long feeders with much voltage drop on the line resistances, the conventional methods may not guarantee the voltage regulation on the load busses within a suitable range. Therefore, in addition to compensate the voltage drop of the primary controller, it is necessary to regulate the voltage of critical loads. In this paper, a new voltage regulation strategy is proposed to regulate the voltage of Micro-Grid (MG) by employing the average voltage of identified critical busses, which are determined by the proposed modal analysis. Numerical steady state analysis and preliminary simulation results validate effectiveness of the proposed scheme. Furthermore, experimental results are performed to demonstrate the viability of the proposed approach.
OriginalsprogEngelsk
TidsskriftI E E E Transactions on Industry Applications
Vol/bind53
Udgave nummer5
Sider (fra-til)4855 - 4862
Antal sider8
ISSN0093-9994
DOI
StatusUdgivet - sep. 2017

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Voltage control
Controllers
Electric potential
Modal analysis
Voltage drop

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title = "On Secondary Control Approaches for Voltage Regulation in DC Microgrids",
abstract = "Centralized or decentralized secondary controller is commonly employed to regulate the voltage drop raised by the primary controller. However, in the case of high capacity MGs and long feeders with much voltage drop on the line resistances, the conventional methods may not guarantee the voltage regulation on the load busses within a suitable range. Therefore, in addition to compensate the voltage drop of the primary controller, it is necessary to regulate the voltage of critical loads. In this paper, a new voltage regulation strategy is proposed to regulate the voltage of Micro-Grid (MG) by employing the average voltage of identified critical busses, which are determined by the proposed modal analysis. Numerical steady state analysis and preliminary simulation results validate effectiveness of the proposed scheme. Furthermore, experimental results are performed to demonstrate the viability of the proposed approach.",
keywords = "DC microgrid, Droop control, Modal analysis, Secondary controller, Voltage regulation",
author = "Saeed Peyghami and Hossein Mokhtari and Pooya Davari and Loh, {Pon Chiang} and Frede Blaabjerg",
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On Secondary Control Approaches for Voltage Regulation in DC Microgrids. / Peyghami, Saeed; Mokhtari, Hossein; Davari, Pooya; Loh, Pon Chiang; Blaabjerg, Frede.

I: I E E E Transactions on Industry Applications, Bind 53, Nr. 5, 09.2017, s. 4855 - 4862 .

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - On Secondary Control Approaches for Voltage Regulation in DC Microgrids

AU - Peyghami, Saeed

AU - Mokhtari, Hossein

AU - Davari, Pooya

AU - Loh, Pon Chiang

AU - Blaabjerg, Frede

PY - 2017/9

Y1 - 2017/9

N2 - Centralized or decentralized secondary controller is commonly employed to regulate the voltage drop raised by the primary controller. However, in the case of high capacity MGs and long feeders with much voltage drop on the line resistances, the conventional methods may not guarantee the voltage regulation on the load busses within a suitable range. Therefore, in addition to compensate the voltage drop of the primary controller, it is necessary to regulate the voltage of critical loads. In this paper, a new voltage regulation strategy is proposed to regulate the voltage of Micro-Grid (MG) by employing the average voltage of identified critical busses, which are determined by the proposed modal analysis. Numerical steady state analysis and preliminary simulation results validate effectiveness of the proposed scheme. Furthermore, experimental results are performed to demonstrate the viability of the proposed approach.

AB - Centralized or decentralized secondary controller is commonly employed to regulate the voltage drop raised by the primary controller. However, in the case of high capacity MGs and long feeders with much voltage drop on the line resistances, the conventional methods may not guarantee the voltage regulation on the load busses within a suitable range. Therefore, in addition to compensate the voltage drop of the primary controller, it is necessary to regulate the voltage of critical loads. In this paper, a new voltage regulation strategy is proposed to regulate the voltage of Micro-Grid (MG) by employing the average voltage of identified critical busses, which are determined by the proposed modal analysis. Numerical steady state analysis and preliminary simulation results validate effectiveness of the proposed scheme. Furthermore, experimental results are performed to demonstrate the viability of the proposed approach.

KW - DC microgrid

KW - Droop control

KW - Modal analysis

KW - Secondary controller

KW - Voltage regulation

U2 - 10.1109/TIA.2017.2704908

DO - 10.1109/TIA.2017.2704908

M3 - Journal article

VL - 53

SP - 4855

EP - 4862

JO - I E E E Transactions on Industry Applications

JF - I E E E Transactions on Industry Applications

SN - 0093-9994

IS - 5

ER -