Autonomous Control of Interlinking Converter With Energy Storage in Hybrid AC–DC Microgrid

Loh, Poh Chiang; Ding, Lianghui; Chai, Yun; Blaabjerg, Frede

doi:10.1109/tia.2013.2252319

Cited by 352 publications

(212 citation statements)

References 25 publications

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“…Loss of any link in such topologies can lead to the failure of the corresponding unit, overstressing other units, and potentially leading to systemlevel instability and cascaded failures [15]. Since future extensions add to the controller complexity, scalability is not straightforward.…”

Section: Introductionmentioning

confidence: 99%

Distributed adaptive droop control for DC distribution systems

Nasirian

Davoudi

Lewis

et al. 2016

2016 IEEE Power and Energy Society General Meeting (PESGM)

150

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Section: Introductionmentioning

confidence: 99%

Distributed adaptive droop control for DC distribution systems

Nasirian

Davoudi

Lewis

et al. 2016

2016 IEEE Power and Energy Society General Meeting (PESGM)

150

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show abstract

“…The power flow decision based on the relative loading may cause the interlinking converter to operate continuously, and thus it may result in unnecessary operational losses. The same power sharing scheme has been extended to interlinked microgrids with a storage system [19]. This scheme is further improved with the progressive auto-tuning to minimize the energy flow through interlinking converters [20].…”

Section: Introductionmentioning

confidence: 99%

Autonomous power management for interlinked AC-DC microgrids

Nutkani¹,

Meegahapola²,

Andrew³

et al. 2018

CSEE JPES

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Abstract-The existing power management schemes for interlinked AC-DC microgrids have several operational drawbacks. Some of the existing control schemes are designed with the main objective of sharing power among the interlinked microgrids based on their loading conditions, while other schemes regulate the voltage of the interlinked microgrids without considering the specific loading conditions. However, the existing schemes cannot achieve both objectives efficiently. To address these issues, an autonomous power management scheme is proposed, which explicitly considers the specific loading condition of the DC microgrid before importing power from the interlinked AC microgrid. This strategy enables voltage regulation in the DC microgrid, and also reduces the number of converters in operation. The proposed scheme is fully autonomous while it retains the plug-nplay features for generators and tie-converters. The performance of the proposed control scheme has been validated under different operating scenarios. The results demonstrate the effectiveness of the proposed scheme in managing the power deficit in the DC microgrid efficiently and autonomously while maintaining the better voltage regulation in the DC microgrid.

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“…According to the voltage type of the main bus, MGs can be distinguished as ac and dc MGs [2,3]. Although goals are specific to each type of MGs, when natively dc loads are connected, the dc MGs have become popular recently thanks to its own advantages [4,5].…”

Section: Introductionmentioning

confidence: 99%

Decentralised control method for DC microgrids with improved current sharing accuracy

Yang

Jin

et al. 2017

IET Generation, Transmission & Distribution

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A decentralised control method that deals with current sharing issues in dc microgrids (MGs) is proposed in this study. The proposed method is formulated in terms of 'modified global indicator' concept, which was originally proposed to improve reactive power sharing in ac MGs. In this work, the 'modified global indicator' concept is extended to coordinate dc MGs, which aims to preserve the main features offered by decentralised control methods such as no need of communication links, central controller or knowledge of the microgrid topology and parameters. This global indicator is inserted between current and voltage variables by adopting a virtual capacitor, which directly produces an output current sharing performance that is less relied on mismatches of the multi-bus network. Meanwhile, a voltage stabiliser is complementary developed to maintain output voltage magnitude at steady state through a shunt virtual resistance. The operation under multiple dc-buses is also included in order to enhance the applicability of the proposed controller. A detailed mathematical model including the effect of network mismatches is derived for analysis of the stability of the proposed controller. The feasibility and effectiveness of the proposed control strategy are validated by simulation and experimental results.

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Autonomous Control of Interlinking Converter With Energy Storage in Hybrid AC–DC Microgrid

Cited by 352 publications

References 25 publications

Distributed adaptive droop control for DC distribution systems

Distributed adaptive droop control for DC distribution systems

Autonomous power management for interlinked AC-DC microgrids

Decentralised control method for DC microgrids with improved current sharing accuracy

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