Stability analysis of a DC microgrid with master-slave control structure

Guo, Li; Feng, Ying; Li, Xialin; Wang, Chengshan; Li, Yunwei

doi:10.1109/ecce.2014.6954180

Cited by 15 publications

(5 citation statements)

References 21 publications

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“…Taking into account the tradeoff between current sharing between distributed resources and DC bus voltage stability when using traditional sag control in a DC MG, [31] proposes a robust adaptive control to modify the sag characteristics to satisfy current sharing and bus voltage stability. The authors of [32] proposes an adaptive sag controller to address the issue with conventional sag control.…”

Section: Research On Stability Of DC Mgsmentioning

confidence: 99%

Review of Voltage Control Strategies for DC Microgrids

Lu,

Wang,

Wang

2023

Energies

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With the continuous development of the global economic level, global energy consumption is also on the rise, and the global power industry is faced with a number of formidable challenges including load growth, low energy efficiency, high power quality, and environmental protection. Despite the fact that distributed energy cannot be directly connected to the power grid, the concept of the microgrid (MG) is proposed to make better use of distributed energy and reduce its effect on the power grid. The low cost and high controllability of DC MGs have piqued the interest of academicians both at home and abroad. If DC MGs are to be implemented in real-world engineering, a stability control strategy is required; therefore, research on voltage stability and coordinated control of DC MGs is extremely important and promising. This paper summarizes the current research on the voltage control strategy of the DC MG from the perspective of the voltage control strategy of the DC MG. Lastly, it is proposed that the future development of DC MGs will be more focused on intelligence and control precision and that the consistency algorithm combined with the benefits of centralized control and distributed control can effectively aid the future development of DC MGs, taking into account the grid’s dependability and control precision.

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Section: Research On Stability Of DC Mgsmentioning

confidence: 99%

Review of Voltage Control Strategies for DC Microgrids

Lu,

Wang,

Wang

2023

Energies

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“…Therefore, the DC microgrid has the advantages of simple control, high efficiency, flexibility, low construction cost [2], and broader application prospects in electric vehicles, residential load power supply and other fields [3]. In DC microgrids, the bus voltage becomes the only standard by which to measure the power balance of system, since the system does not need to consider reactive power [4]. In the DC microgrid, new energy sources such as DG and ESSs are usually connected to the DC bus through the source converters.…”

Section: Introductionmentioning

confidence: 99%

Stability Analysis of Buck Converter Based on Passivity-Based Stability Criterion

Zhang,

Si,

Wang

et al. 2024

Applied Sciences

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Recently, the stability of DC microgrids has attracted increasing attention. The traditional stability analysis method cannot not meet the requirements for the complexity and bidirectional energy flow of the system. In this paper, a passivity-based stability criterion (PBSC) is proposed to analyze the stability of the cascade system. In order to realize the passivity of the system, an improved feedback control method based on the traditional double-loop control strategy is proposed, which will improve the stability region and guarantee the passivity of the system. Moreover, a Buck-CPL simulation model is established based on MATLAB/Simulink R2008, and the correctness of the theoretical analysis is verified by experiments.

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“…A complex three-level distributed control scheme is proposed in [38], where the system-level information is shared with the second-level control through a communication link with a delay. A simpler version of a hierarchical control scheme, i.e., master-slave based control, is applied in [33], [39], wherein the local controller plays the role of the slave. The centralized master-level controller broadcasts the global status of the PV sources and reduces fluctuations in the system.…”

Section: Introductionmentioning

confidence: 99%

Robust Centralized Control for DC Islanded Microgrid Considering Communication Network Delay

2020

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In recent years, the application of renewable energy resources (RES) with DC output has increased, and RES integration as DC islanded microgrids (DC ImGs) has attracted the attention of many researchers. However, DC ImGs face many challenges, and voltage stability is extremely critical for efficient power distribution. This challenge becomes more prominent when exogenous disturbances, as well as time-delay, exist in the system mainly because of the communication network. In this study, we develop a mathematical model of the time-delay DC ImG. To compensate for the effect of the time-delay, three control strategies are introduced-stabilizing, robust, and robust-predictor. The controller's stability is guaranteed based on the Lyapunov-Krasovskii theorem, whereas for the exogenous disturbance rejection, the L 2-norm of the system is reduced. Furthermore, to obtain the proposed controllers' gains, linear-matrixinequality constraints are formulated. The performances of the controllers are investigated through numerous simulations, and a detailed analysis is presented.

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Stability analysis of a DC microgrid with master-slave control structure

Cited by 15 publications

References 21 publications

Review of Voltage Control Strategies for DC Microgrids

Review of Voltage Control Strategies for DC Microgrids

Stability Analysis of Buck Converter Based on Passivity-Based Stability Criterion

Robust Centralized Control for DC Islanded Microgrid Considering Communication Network Delay

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