A novel control approach to improve the stability of hybrid AC/DC microgrids

Khosravi, Nima; Baghbanzadeh, Rasoul; Oubelaid, Adel; Tostado‐Véliz, Marcos; Bajaj, Mohit; Hekss, Zineb; Echalih, Salwa; Belkhier, Youcef; Houran, Mohamad Abou; AboRas, Kareem M.

doi:10.1016/j.apenergy.2023.121261

Cited by 27 publications

(3 citation statements)

References 33 publications

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“…Various tools are developed to help with the design, performance assessment, and economics of PV systems. A detailed study is necessary for the general architecture of the GEB PV system, maximum power point tracking algorithm, inverter synchronization, and grid connection [38,39]. One such tool is PVSYST, which can analyze the entire PV systems, including stand-alone, grid-connected, pumping and DC-grid PV systems.…”

Section: Energy Efficiency and Sufficiencymentioning

confidence: 99%

Architecting sustainability performances and enablers for grid-interactive efficient buildings

Habash,

Hasan

2024

Build. Eng.

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Today, grid-interactive efficient buildings are gaining popularity due to their potential sustainability performances through their ability to learn, adapt, and evolve at different scales to improve the quality of life of their users while optimizing resource usage and service availability. This is realized through various practices such as management and control measures enabled by smart grid technologies, interoperability, and human-cyber-physical security. However, despite their great potential, the research of those technologies still faces various challenges. These include a lack of communication and control infrastructure to address interpretability, security, cost barriers, and difficulties balancing occupant needs with grid benefits. Initially, system modelling and simulation are promising approaches to address those challenges ahead of time. It involves the consideration of complex systems made up of components from various research domains. This paper addresses the above practices, highlighting the value of integrating technology and intelligence in the planning and operation of buildings, both new and old. It provides a way to educate architects and engineers about this emerging field and demonstrates how these practices can help in creating efficient, resilient, and secure buildings that contribute to occupant comfort and decarbonization.

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Section: Energy Efficiency and Sufficiencymentioning

confidence: 99%

Architecting sustainability performances and enablers for grid-interactive efficient buildings

Habash,

Hasan

2024

Build. Eng.

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“…A microgrid constitutes a medium to low-voltage power system integrating renewable sources like photovoltaic generation, fuel cells, energy storage devices, and wind power (Kumar et al, 2017;Khosravi et al, 2023). To fulfill local energy demands economically, microgrids connect Distributed Generating Sources (DGs) into the distribution network, such as local grids or substations, avoiding the extra costs of expanding centralized utility Grids (Khosravi et al, 2023). Typically, Microgrids interconnect with low or medium voltage distribution networks directly or through power converters (Kumar et al, 2017).…”

Section: Literature Reviewmentioning

confidence: 99%

Comparative analysis and implementation of DC microgrid systems versus AC microgrid performance

Memon,

Ali,

Memon

et al. 2024

Front. Energy Res.

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DC power systems have emerged as a cost-effective solution for electric power generation and transmission, challenging the dominance of AC distribution systems. However, a comprehensive efficiency comparison between DC and AC microgrids remains understudied. This study seeks to explore and conduct a thorough survey on development and designing of DC microgrids to address this gap. Firstly, a comprehensive literature review comparing the efficiencies of AC and DC microgrids has been presented. The analysis highlights the superior efficiency of DC distribution systems over AC systems, supported by detailed advantages. Secondly, hardware implementation has been performed to directly compare the efficiency of DC versus AC systems. Research validity and application are further improved by the hardware prototype’s scalability, which in simulation allows for a thorough assessment of system stability over a range of scenarios from four to six terminals. Test results from the built hardware prototype demonstrate an astounding 15% increase in efficiency using the DC system compared to the AC system, demonstrating its potential for improved performance in real-world scenarios. In simulation results, the designed DC microgrid demonstrates stable voltages of 500V under steady state operation and rapid recovery within 80 ms under both symmetrical and asymmetrical faults has been observed. The research being investigated utilizes hardware implementation and simulation to provide useful insights into the efficiency and stability of DC microgrids in comparison to AC systems. These results are important for developing robust power distribution networks in modern energy environments, promoting sustainability and dependability in infrastructure growth.

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“…In this topology, the RSC is a converter, that is, used to supply an excitation voltage to the induction generator rotor windings. The GSC (grid side converter) is a rectifier that keeps the DC bus voltage stable 38 , 39 . Underneath the standard case, the DFIG mathematical model will be represented based on the voltage and flux linkage vector relations in the PRSRF as follows: where is the stator voltage vector, is the rotor voltage vector, refers to the stator current vector, is the rotor current vector, is the stator flux linkage vector, and is the rotor flux linkage vector, refers to the slip angular frequency amid the PRSRF and the rotor.…”

Section: Modeling Of Dfig Under ‘Af’ Conditionsmentioning

confidence: 99%

Low-voltage ride-through capability in a DFIG using FO-PID and RCO techniques under symmetrical and asymmetrical faults

Sabzevari,

Khosravi,

Abdelghany

et al. 2023

Sci Rep

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The power grid faults study is crucial for maintaining grid reliability and stability. Understanding these faults enables rapid detection, prevention, and mitigation, ensuring uninterrupted electricity supply, safeguarding equipment, and preventing potential cascading failures, ultimately supporting the efficient functioning of modern society. This paper delves into the intricate challenge of ensuring the robust operation of wind turbines (WTs) in the face of fault conditions, a matter of substantial concern for power system experts. To navigate this challenge effectively, the implementation of symmetrical fault ride-through (SFRT) and asymmetrical fault ride-through (AFRT) control techniques becomes imperative, as these techniques play a pivotal role in upholding the stability and dependability of the power system during adverse scenarios. This study addresses this formidable challenge by introducing an innovative SFRT–AFRT control methodology based on rotor components optimization called RCO tailored for the rotor side converter (RSC) within a doubly-fed induction generator (DFIG) utilized in wind turbine systems. The proposed control strategy encompasses a two-fold approach: firstly, the attenuation of both positive and negative components is achieved through the strategic application of boundary constraints and the establishment of reference values. Subsequently, the optimization of the control characteristic ‘$$\beta$$ β ’ is accomplished through the utilization of a particle swarm optimization (PSO) algorithm integrated within an optimization loop. This intricate interplay of mechanisms aims to optimize the performance of the RSC under fault conditions. To measure the efficacy of the proposed control technique, a comparative analysis is conducted. Fractional-order (FO) proportional–integral–derivative (PID) controllers are employed as an additional method to complement the novel approach. By systematically juxtaposing the performance of the proposed SFRT–AFRT control technique with the FO-PID controllers, a comprehensive evaluation of the proposed approach's effectiveness is attained. This comparative assessment lends valuable insights into the potential advantages and limitations of the novel control technique, thereby contributing to the advancement of fault mitigation strategies in WT systems. Finally, the paper highlights the economic viability of the proposed control method, suggesting its suitability for addressing broader power network issues, such as power quality, in future wind farm research.

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A novel control approach to improve the stability of hybrid AC/DC microgrids

Cited by 27 publications

References 33 publications

Architecting sustainability performances and enablers for grid-interactive efficient buildings

Architecting sustainability performances and enablers for grid-interactive efficient buildings

Comparative analysis and implementation of DC microgrid systems versus AC microgrid performance

Low-voltage ride-through capability in a DFIG using FO-PID and RCO techniques under symmetrical and asymmetrical faults

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