Lifetime-Oriented Droop Control Strategy for AC Islanded Microgrids

Yanbo Wang, Dong Liu, Ping Liu, Fujin Deng, Dao Zhou, Zhe Chen

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

4 Citationer (Scopus)

Resumé

This paper presents a lifetime-oriented droop control strategy for AC islanded microgrids, which is able to perform equal thermal sharing among paralleled inverters. Electro-thermal model and temperature estimation model are first established to estimate thermal characteristics of inverters, and temperature-power droop relationships are built according to the electro-thermal model. Then, a lifetime-oriented droop controller is developed to realize equal thermal stress sharing. In addition, small signal model of microgrid equipped with the proposed droop control is established, and the effect of electro-thermal parameters of power devices on closed-loop stability of droop controller is investigated. Simulation and experimental results show that the proposed lifetime-oriented droop control is able to perform identical thermal stress sharing among paralleled inverters automatically, which mitigates the impact of thermal stresses on average lifetime of inverters, and thus enhances long-term reliability of microgrids.
OriginalsprogEngelsk
TidsskriftI E E E Transactions on Industry Applications
Vol/bind55
Udgave nummer3
Antal sider10
ISSN0093-9994
DOI
StatusUdgivet - maj 2019

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title = "Lifetime-Oriented Droop Control Strategy for AC Islanded Microgrids",
abstract = "This paper presents a lifetime-oriented droop control strategy for AC islanded microgrids, which is able to perform equal thermal sharing among paralleled inverters. Electro-thermal model and temperature estimation model are first established to estimate thermal characteristics of inverters, and temperature-power droop relationships are built according to the electro-thermal model. Then, a lifetime-oriented droop controller is developed to realize equal thermal stress sharing. In addition, small signal model of microgrid equipped with the proposed droop control is established, and the effect of electro-thermal parameters of power devices on closed-loop stability of droop controller is investigated. Simulation and experimental results show that the proposed lifetime-oriented droop control is able to perform identical thermal stress sharing among paralleled inverters automatically, which mitigates the impact of thermal stresses on average lifetime of inverters, and thus enhances long-term reliability of microgrids.",
keywords = "Droop control, Lifetime, Paralleled inverters, Thermal sharing, AC islanded microgrid",
author = "Yanbo Wang and Dong Liu and Ping Liu and Fujin Deng and Dao Zhou and Zhe Chen",
year = "2019",
month = "5",
doi = "10.1109/TIA.2019.2898847",
language = "English",
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Lifetime-Oriented Droop Control Strategy for AC Islanded Microgrids. / Wang, Yanbo; Liu, Dong; Liu, Ping; Deng, Fujin; Zhou, Dao; Chen, Zhe.

I: I E E E Transactions on Industry Applications, Bind 55, Nr. 3, 05.2019.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Lifetime-Oriented Droop Control Strategy for AC Islanded Microgrids

AU - Wang, Yanbo

AU - Liu, Dong

AU - Liu, Ping

AU - Deng, Fujin

AU - Zhou, Dao

AU - Chen, Zhe

PY - 2019/5

Y1 - 2019/5

N2 - This paper presents a lifetime-oriented droop control strategy for AC islanded microgrids, which is able to perform equal thermal sharing among paralleled inverters. Electro-thermal model and temperature estimation model are first established to estimate thermal characteristics of inverters, and temperature-power droop relationships are built according to the electro-thermal model. Then, a lifetime-oriented droop controller is developed to realize equal thermal stress sharing. In addition, small signal model of microgrid equipped with the proposed droop control is established, and the effect of electro-thermal parameters of power devices on closed-loop stability of droop controller is investigated. Simulation and experimental results show that the proposed lifetime-oriented droop control is able to perform identical thermal stress sharing among paralleled inverters automatically, which mitigates the impact of thermal stresses on average lifetime of inverters, and thus enhances long-term reliability of microgrids.

AB - This paper presents a lifetime-oriented droop control strategy for AC islanded microgrids, which is able to perform equal thermal sharing among paralleled inverters. Electro-thermal model and temperature estimation model are first established to estimate thermal characteristics of inverters, and temperature-power droop relationships are built according to the electro-thermal model. Then, a lifetime-oriented droop controller is developed to realize equal thermal stress sharing. In addition, small signal model of microgrid equipped with the proposed droop control is established, and the effect of electro-thermal parameters of power devices on closed-loop stability of droop controller is investigated. Simulation and experimental results show that the proposed lifetime-oriented droop control is able to perform identical thermal stress sharing among paralleled inverters automatically, which mitigates the impact of thermal stresses on average lifetime of inverters, and thus enhances long-term reliability of microgrids.

KW - Droop control

KW - Lifetime

KW - Paralleled inverters

KW - Thermal sharing

KW - AC islanded microgrid

U2 - 10.1109/TIA.2019.2898847

DO - 10.1109/TIA.2019.2898847

M3 - Journal article

VL - 55

JO - I E E E Transactions on Industry Applications

JF - I E E E Transactions on Industry Applications

SN - 0093-9994

IS - 3

ER -