Distributed hybrid secondary control for a DC microgrid via discrete-time interaction

This paper studies the current sharing problem of a dc microgrid using the hybrid dynamic control method. The hybrid dynamic controller framework is established including a continuous-time part and a discrete-time part, where the former part eliminates the voltage deviation of the dc bus and the lat...

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Main Authors: Liu, Xiao-Kang, He, Haibo, Wang, Yan-Wu, Xu, Qianwen, Guo, Fanghong
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/141537
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1415372020-06-09T03:28:02Z Distributed hybrid secondary control for a DC microgrid via discrete-time interaction Liu, Xiao-Kang He, Haibo Wang, Yan-Wu Xu, Qianwen Guo, Fanghong School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering DC Microgrid Current Sharing This paper studies the current sharing problem of a dc microgrid using the hybrid dynamic control method. The hybrid dynamic controller framework is established including a continuous-time part and a discrete-time part, where the former part eliminates the voltage deviation of the dc bus and the latter part ensures the current sharing accuracy of the dc microgrid. The proposed distributed hybrid secondary controller not only guarantees a high accuracy of current sharing but also maintains the voltage regulation at the dc bus. Different from most existing methods, it only utilizes the sampling output current information of neighbors at the discrete time instants, which greatly reduces the communication burden. Under the framework of stability analysis on the closed-loop system, the proposed hybrid dynamic controller achieves both current sharing and voltage regulation if the average interacted interval of the discrete time interaction satisfies a bounded constraint. Besides, a detailed parameter design of the controller is provided. Finally, simulation and experimental tests are presented to demonstrate the effectiveness of the proposed method. 2020-06-09T03:28:02Z 2020-06-09T03:28:02Z 2018 Journal Article Liu, X.-K., He, H., Wang, Y.-W., Xu, Q., & Guo, F. (2018). Distributed hybrid secondary control for a DC microgrid via discrete-time interaction. IEEE Transactions on Energy Conversion, 33(4), 1865-1875. doi:10.1109/TEC.2018.2850279 0885-8969 https://hdl.handle.net/10356/141537 10.1109/TEC.2018.2850279 2-s2.0-85049070738 4 33 1865 1875 en IEEE Transactions on Energy Conversion © 2018 IEEE. All rights reserved.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
DC Microgrid
Current Sharing
spellingShingle Engineering::Electrical and electronic engineering
DC Microgrid
Current Sharing
Liu, Xiao-Kang
He, Haibo
Wang, Yan-Wu
Xu, Qianwen
Guo, Fanghong
Distributed hybrid secondary control for a DC microgrid via discrete-time interaction
description This paper studies the current sharing problem of a dc microgrid using the hybrid dynamic control method. The hybrid dynamic controller framework is established including a continuous-time part and a discrete-time part, where the former part eliminates the voltage deviation of the dc bus and the latter part ensures the current sharing accuracy of the dc microgrid. The proposed distributed hybrid secondary controller not only guarantees a high accuracy of current sharing but also maintains the voltage regulation at the dc bus. Different from most existing methods, it only utilizes the sampling output current information of neighbors at the discrete time instants, which greatly reduces the communication burden. Under the framework of stability analysis on the closed-loop system, the proposed hybrid dynamic controller achieves both current sharing and voltage regulation if the average interacted interval of the discrete time interaction satisfies a bounded constraint. Besides, a detailed parameter design of the controller is provided. Finally, simulation and experimental tests are presented to demonstrate the effectiveness of the proposed method.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Liu, Xiao-Kang
He, Haibo
Wang, Yan-Wu
Xu, Qianwen
Guo, Fanghong
format Article
author Liu, Xiao-Kang
He, Haibo
Wang, Yan-Wu
Xu, Qianwen
Guo, Fanghong
author_sort Liu, Xiao-Kang
title Distributed hybrid secondary control for a DC microgrid via discrete-time interaction
title_short Distributed hybrid secondary control for a DC microgrid via discrete-time interaction
title_full Distributed hybrid secondary control for a DC microgrid via discrete-time interaction
title_fullStr Distributed hybrid secondary control for a DC microgrid via discrete-time interaction
title_full_unstemmed Distributed hybrid secondary control for a DC microgrid via discrete-time interaction
title_sort distributed hybrid secondary control for a dc microgrid via discrete-time interaction
publishDate 2020
url https://hdl.handle.net/10356/141537
_version_ 1681059401270558720