Modular Multilevel Converters for Renewable Energies Interfacing: Comparative review

Mahmoud, Ahmed Abdelaal Ahmed; Hafez, Ahmed A. A.; Yousef, Ahmed H.

doi:10.1109/cpere45374.2019.8980038

Cited by 12 publications

(7 citation statements)

References 93 publications

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“…The upper and lower arms have one arm inductor L, constraining the circulating current flowing within the MMC. V dc is the DC side voltage that must be persistent in maintaining a constant DC output voltage in each phase of MMC [14,42].…”

Section: Modular Multilevel Convertersmentioning

confidence: 99%

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Fault‐tolerant modular multilevel converter for a seamless transition between stand‐alone and grid‐connected microgrid

Mahmoud

Hafez

Yousef

et al. 2022

IET Power Electronics

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Recently, renewable distributed generation (DG) systems have emerged to improve the power system security and reliability while reducing the environmental incompatibility of fossil fuel power plants. DG could operate either as a standalone and/or as a grid‐connected power system. The interfacing circuits of DG and their controls have to comply with utility quality regulations and afford a seamless transition from online to offline and vice versa. This article advises a simple and robust control scheme for a modular multilevel converter (MMC) that interfaces with a photovoltaic (PV) generator. The proposed control method ensures high‐quality output voltage/current waveform in online and/or offline operating modes. Moreover, the proposed control provides a seamless and swift transition from standalone to grid‐connected and vice versa. The exhibited control scheme is simulated with MATLAB/Simulink. Real‐time simulator OPAL‐RT OP4510 is used to verify the displayed simulation results. The simulation results determine the accomplishment of the proposed control technique for a seamless transition from the grid‐connected mode to the standalone mode and vice versa via MMC.

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Section: Modular Multilevel Convertersmentioning

confidence: 99%

“…Moreover, the MMC has gained greater importance for renewable energy systems. Many semiconductor and capacitor switches are used in the MMC structure [14]. MMC absorbs a small fraction of the active energy to retain the voltage of the fixed capacitors sub‐module in addition to the compensation of active energy loss [15, 16].…”

Section: Introductionmentioning

confidence: 99%

Fault‐tolerant modular multilevel converter for a seamless transition between stand‐alone and grid‐connected microgrid

Mahmoud

Hafez

Yousef

et al. 2022

IET Power Electronics

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“…[17]. It has the potential of scalability to meet voltage level requirements, low level of power losses, high reliability, enhanced efficiency, and better harmonic suppression quality [18][19][20]. It requires the grid side filter to be smaller in size since it has lower harmonics in its output voltage [21].…”

Section: Unified Power Quality Conditionermentioning

confidence: 99%

Design and Control of Modular Multilevel Converter for Voltage Sag Mitigation

et al. 2022

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Voltage sag in a power system is an unavoidable power quality issue, and it is also an urgent concern of sensitive industrial users. To ensure the power quality demand and economical operation of the power system, voltage sag management has always drawn great attention from researchers around the world. The latest research that realizes the power quality conditioning has used dynamic voltage restorers (DVRs), static VAR compensator (SVCs), adaptive neuro-fuzzy inference systems (ANFISs), and fuzzy logic controllers based on DVR to mitigate voltage sag. These devices, methods, and control strategies that have been recently used for voltage sag mitigation have some limitations, including high cost, increased complexity, and lower performance. This article proposes a novel, efficient, reliable, and cost-effective voltage sag mitigation scheme based on a modular multilevel converter (MMC) that ensures effective power delivery at nominal power under transient voltage conditions. The proposed method, the MMC, compensates for the energy loss caused by voltage sags using its internal energy storage of the submodules, and ensures reliable power delivery to the load distribution system. Furthermore, control strategies are developed for the MMC to control DC voltage, AC voltage, active power, and circulating current. Detailed system mathematical models of controllers are developed in the dual synchronous reference frame (DSRF). Validation of the results of back-to-back MMC for dynamic load distribution system is analyzed which proves the effectiveness of the proposed scheme for voltage sag mitigation.

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“…By reducing the voltage rate need of switching devices, multilevel topologies are able to achieve larger voltage levels. Extensive research over the last decade has focused on a modular multilevel converter as the most promising of the current multilevel topologies [1] [2]. Among the many benefits of multilevel converters are their modular designs, which allow for less voltage stress on switching devices and an output voltage with a low harmonic content [3].…”

Section: Introductionmentioning

confidence: 99%

Synergizing Battery-Powered Permanent Magnet Synchronous Motor Control with Integrated Modular Multilevel Converter Systems

L. Anbarasu

2024

jes

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This proposed work presents a comprehensive examination of a modular multilevel converter (MMC) combined with a permanent magnet synchronous motor (PMSM) for battery energy management in applications. In order to provide effective energy transfer and dynamic control, the Modular Multilevel Converter serves as a bridge between the battery system and the Permanent Magnet Synchronous Motor drive. By cleverly controlling energy flow and minimizing losses during charging and discharging cycles, the combination of MMC with PMSM seeks to increase energy efficiency and prolong battery life. Since the energy source provides all of the power for the motor, it runs at a constant pace. When the accelerating mode finishes, the energy storage receives just enough power to maintain a steady voltage. The energy storage system utilizes the majority of the renewable power generated by the electric motor when it is in deceleration mode to raise the voltage in the system. During the subsequent acceleration mode, the stored energy might be released the MMC-BESS, which combines a modular multilevel converter with a battery energy storage system, is gaining popularity due to its high adaptability and dependability. This system integrates batteries into a sub module. Sub-modular capacitor voltage fluctuations are caused by the significant reactive power that is generated through the workings of modular multilevel converters. To reduce the fluctuation, large capacitance capacitors is required, which would significantly increase the system's capacity. The proposed approach means to upgrade energy proficiency and execution in electric vehicle applications. By joining the benefits of battery power with the flexibility of MMC frameworks, the arrangement offers upgraded control accuracy, decreased misfortunes, and further developed adaptation to non-critical failure. This combination works with consistent power the executives, guaranteeing ideal use of assets while meeting severe execution prerequisites. Through exhaustive examination and recreation, the adequacy of this incorporated framework is illustrated, displaying propelling the field of electric vehicle impetus and power conversion potential.

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Modular Multilevel Converters for Renewable Energies Interfacing: Comparative review

Cited by 12 publications

References 93 publications

Fault‐tolerant modular multilevel converter for a seamless transition between stand‐alone and grid‐connected microgrid

Fault‐tolerant modular multilevel converter for a seamless transition between stand‐alone and grid‐connected microgrid

Design and Control of Modular Multilevel Converter for Voltage Sag Mitigation

Synergizing Battery-Powered Permanent Magnet Synchronous Motor Control with Integrated Modular Multilevel Converter Systems

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