Literature Review of Power Sharing Control Strategies in Islanded AC Microgrids with Nonlinear Loads

Alsafran, Ahmed S.

doi:10.1109/isgteurope.2018.8571800

Cited by 9 publications

(9 citation statements)

References 18 publications

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“…As introduced in the previous section, MG control can be characterized as a three-level control: primary (first), secondary (second), and tertiary (third) [2,4,8,21,[33][34][35][36][37][38]. Also, it can be found in the literature as a four-level control: voltage (first), primary (second), secondary (third), and tertiary (fourth) [39]; as zero (first), primary (second), secondary (third), and tertiary (fourth) [40]; or as converter output control (first), power sharing control (second), MG supervision control (third), and tertiary control (fourth) [41].…”

Section: Hierarchical Controlmentioning

confidence: 99%

Development of Control Techniques for AC Microgrids: A Critical Assessment

Cárdenas,

Martínez,

Molina

et al. 2023

Sustainability

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This article aims to provide a comprehensive review of control strategies for AC microgrids (MG) and presents a confidently designed hierarchical control approach divided into different levels. These levels are specifically designed to perform functions based on the MG’s mode of operation, such as grid-connected or islanded mode. The primary control ensures frequency (f) and voltage (V) stability, whereas the secondary control adjusts their values to their references and the tertiary control efficiently manages the power of distributed generators (DGs) in a cost-effective manner. The article extensively discusses centralized, decentralized, and distributed strategies for each control level, highlighting their differences, advantages, disadvantages, and areas of application. Finally, the usefulness of different control strategies at different levels is demonstrated through practical examples.

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Section: Hierarchical Controlmentioning

confidence: 99%

Development of Control Techniques for AC Microgrids: A Critical Assessment

Cárdenas,

Martínez,

Molina

et al. 2023

Sustainability

View full text Add to dashboard Cite

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“…The alternatives are automatic control methods applied on EPC. These methods improve the energy exchange in situations of shared load, generation of harmonics by non-linear loads, or the slow dynamic response due to the implementation of low-pass filters to obtain voltage, current, or power values [42][43][44].…”

Section: Power Distribution Networkmentioning

confidence: 99%

Review on Multi-Objective Control Strategies for Distributed Generation on Inverter-Based Microgrids

et al. 2020

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Microgrids have emerged as a solution to address new challenges in power systems with the integration of distributed energy resources (DER). Inverter-based microgrids (IBMG) need to implement proper control systems to avoid stability and reliability issues. Thus, several researchers have introduced multi-objective control strategies for distributed generation on IBMG. This paper presents a review of the different approaches that have been proposed by several authors of multi-objective control. This work describes the main features of the inverter as a key component of microgrids. Details related to accomplishing efficient generation from a control systems’ view have been observed. This study addresses the potential of multi-objective control to overcome conflicting objectives with balanced results. Finally, this paper shows future trends in control objectives and discussion of the different multi-objective approaches.

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“…Regarding the control structure of grid-supporting inverters, different droop controllers [17,18] can be used to react to frequency or voltage changes This structure is intended to explain inverters to give an understanding similar to that of rotation generators. Here, many advantages and disadvantages such as a trade-off between voltage regulation and load sharing [19] when using parallel DGs as well as a slowdown of the dynamic response due to required low pass filters for stabilization for active and reactive power [20] and introduced harmonics from non-linear loads [21] are discussed. For most challenges, other research papers introduce solutions, which in most cases are communication-based but are costly in praxis [22,23].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Stability of Grid-Supporting Inverters from an Analytical Point of View with Lessons from Microgrids

Lehmal,

Zhang,

Renner

et al. 2023

Energies

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The central components influencing future grid stability in the future are inverters and their controllers. This paper delves into the pivotal role of inverters and their controllers in shaping the future stability of grids. Focusing on grid-supporting inverters, the study utilizes a microgrid test setup to explore their impact on overall grid stability. Employing impedance-based stability analysis with the Nyquist criterion, the paper introduces variations in internal inverter parameters and external grid parameters using pole-zero map considerations. The inverter’s control structure, resembling standard generators with droop control, facilitates the application of grid operators’ knowledge to inverter control. Mathematical insights into stability principles are provided, highlighting the influence of poles related to the phase-locked loop and the strategic placement of additional poles for enhanced stability. Furthermore, the paper evaluates the effects of rotating inertia, revealing that a 50% increase in system inertia can stabilize unstable microgrid behavior, enabling grid-supporting inverters to actively contribute to grid reliability.

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Literature Review of Power Sharing Control Strategies in Islanded AC Microgrids with Nonlinear Loads

Cited by 9 publications

References 18 publications

Development of Control Techniques for AC Microgrids: A Critical Assessment

Development of Control Techniques for AC Microgrids: A Critical Assessment

Review on Multi-Objective Control Strategies for Distributed Generation on Inverter-Based Microgrids

Enhancing Stability of Grid-Supporting Inverters from an Analytical Point of View with Lessons from Microgrids

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