A novel distributed control for hybrid AC/DC microgrid with consideration of power limit

Zhang, Kaizhe; Su, Mei; Sun, Yao; Wu, Peinan; Luo, Zhihua; Han, Hua

doi:10.1109/ecce-asia49820.2021.9479342

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…However, the centralized control is highly dependent on communication and faces challenges brought by single-point failure. Compared with the centralized control strategy, a distributed control can also realize unified performance through reduced communication requirements, which only needs the status of adjacent points through low-bandwidth communication (Espina et al, 2020;Zhang et al, 2021). The decentralized control has the lowest requirements for system communication and generally only requires obtaining the local status, which is suitable for a modular primary control (Xu et al, 2017;Yang et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

A unified decentralized framework for isolated interlinking converters of hybrid DC/AC microgrids

Yang²,

Peng³

et al. 2023

Front. Energy Res.

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Due to the advantages of effectively integrating diversified loads and renewable sources, hybrid DC/AC microgrids have attracted the common attention of industry and academia. Meanwhile, with the increasing number of power electronic devices connected to the system, the complexity of the system increases, which puts forward higher requirements for galvanic isolation and intelligent control methods. This study proposes a unified decentralized framework for isolated interlinking converters (IICs) in hybrid DC/AC microgrids, which include topology and a control strategy to solve the aforementioned problems. Firstly, in terms of topology, a dual active bridge (DAB) converter is adopted to realize galvanic isolation and DC voltage conversion, which can facilitate the interconnection of DC microgrids or be combined with VSC for the interconnection of DC and AC microgrids. Secondly, in terms of the control strategy, a bidirectional voltage–supporting control strategy is proposed for IICs, in which the frequency and voltage are adopted as the indications to balance the power and strengthen the inertia interaction of microgrids. Furthermore, with the proposed control strategy, the voltage sources of different microgrids can share the power fluctuation, cooperatively. The stability of the proposed strategy is analyzed, and the effectiveness is verified by several HIL experiments.

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Section: Introductionmentioning

confidence: 99%

A unified decentralized framework for isolated interlinking converters of hybrid DC/AC microgrids

Yang²,

Peng³

et al. 2023

Front. Energy Res.

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“…Based on the voltage-current droop control strategy [7][8][9], this paper improves the dynamic droop control method of parallel operation of multiple power sources, and realizes the steady-state power sharing following the rated capacity of each power source; At the same time, an instantaneous power sharing scheme is proposed to make the renewable module share the power change with other parallel power supplies in case of sudden load change, reduce the power impact on a single power supply, and provide buffer time for the startup of other power supplies in the system, load protection and other distribution network requirements. Finally, the proposed control scheme is verified by simulation on the multi-level topology of household DC distribution system.…”

Section: Introductionmentioning

confidence: 99%

Multi-level Topology and Dynamic Power Sharing of Household DC Distribution System

Han

Xie²

2023

J. Phys.: Conf. Ser.

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With the popularity of electronic information products and the gradual adoption of DC speed control in electric household appliances, more and more household appliances are equipped with rectifiers or inverters. Moreover, household rooftop PV, wind turbines and energy storage devices also output electric energy in the form of DC. This paper presents a topology of household DC distribution system, which not only improves the reliability of power supply from the power consumption mode, reduces the loss in the process of power form conversion, but also provides users with safer voltage level and more reasonable fault protection. On this basis, this paper proposes an instantaneous power sharing scheme based on droop control, which enables each power module of the system to achieve steady-state and dynamic power sharing.

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Distributed Control Method for Power Sharing in an Islanded AC/DC Microgrid System

Shehzad

Mahmood

2022

2022 International Conference on Emerging Technologies in Electronics, Computing and Communication (ICETECC)

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A novel distributed control for hybrid AC/DC microgrid with consideration of power limit

Cited by 4 publications

References 9 publications

A unified decentralized framework for isolated interlinking converters of hybrid DC/AC microgrids

A unified decentralized framework for isolated interlinking converters of hybrid DC/AC microgrids

Multi-level Topology and Dynamic Power Sharing of Household DC Distribution System

Distributed Control Method for Power Sharing in an Islanded AC/DC Microgrid System

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