Review of Fault Diagnosis and Fault-Tolerant Control Methods of the Modular Multilevel Converter Under Submodule Failure

Xiao, Qian; Jin, Yu; Jia, Hongjie; Tang, Yi; Cupertino, Allan Fagner; Mu, Yunfei; Teodorescu, Remus; Blaabjerg, Frede; Pou, Josep

doi:10.1109/tpel.2023.3283286

Cited by 32 publications

(3 citation statements)

References 131 publications

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“…Since R. Marquardt developed the modular multilevel converter (MMC) in 2003 (Imane et al, 2023;Qin et al, 2023). MMCs have emerged as a favorable technology for grid-connected PV applications owing to it is high efficiency, reliability, modularity, and scalability (Li et al, 2024;Xiao et al, 2023).Their unique topology makes them well-suited for efficiently converting DC power from PV arrays into high-quality AC power to the grid (Hafez et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Robust line voltage sensor-less control of grid-connected MMC converter in PV Applications

Alia,

Merzouk,

Rezaoui

2024

SEES

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This paper discusses the voltage sensor-less control of a single-phase grid-connected Modular Multilevel Converter (MMC) in photovoltaic (PV) applications. The design of the control system is crucial to efficiently injecting PV power into the main grid. Therefore, three control targets are designed. Maximum power point tracking (MPPT) through the Incremental Conductance (IC) algorithm, DC link voltage regulation, and finally output active and reactive power controlling throughout the regulation of grid current amplitude and phase shift. To achieve those targets, the value of grid voltage has to be known accurately. The main contribution of this study is the use of a Simplified Super Twisting Algorithm Sliding Mode Observer (SSTA-SMO) for grid voltage estimation. The effectiveness and satisfactory performance of the proposed system are validated through simulations via MATLAB. To verify the effectiveness of the proposed approach. A study was conducted to evaluate the efficacy of the SSTA-SMO proposal in comparison to a traditional sliding-mode observer. The objective was to showcase the superiority of the proposed approach. The results suggest that the suggested observer surpasses other methods in terms of several aspects, including minimal errors in grid voltage observation, high-quality estimation of grid voltage, and accurate tracking of the reference. Furthermore, it exhibits robustness when exposed to different levels of radiation.

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Section: Introductionmentioning

confidence: 99%

Robust line voltage sensor-less control of grid-connected MMC converter in PV Applications

Alia,

Merzouk,

Rezaoui

2024

SEES

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“…Multilevel converters have gained significant attention in industry and power systems as preferred solutions for energy conversion applications [1][2][3][4][5]. Their widespread use is attributed to their ability to power various applications, including milling machines, gas turbine starters, wind energy conversion, HVDC transmission, conveyors, fans, pumps, and compressors, among others [3,[6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Analyzing Impacts of Amplitude Modulation Index on Performance Characteristics of Three-Phase Nine-Level Modular Multilevel Converters

Alhaj Omar,

Pamuk

2023

Electronics

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Modular multilevel converters (MMCs) represent the forefront of power converter technology, with wide-ranging applications across diverse industries. Over recent decades, substantial research and development efforts have been dedicated to enhancing MMCs’ performance. A significant challenge in power conversion processes is the presence of total harmonic distortion (THD) in output waveforms, which can have adverse effects on electrical equipment. In response, extensive studies have been conducted to address THD-related challenges by refining the control and operation of MMCs. This study investigates the effect of the amplitude modulation index (Ma) on the total harmonic distortion (THD) in nine-level MMC output waves. For this, a standard three-phase and nine-level MMC model was built and simulated in MATLAB/ Simulink environment, and the Ma value was shifted between 0.1 and 1.5. The output current and voltage waves were analyzed, and the optimal limits for the Ma values yielding the lowest THD values were determined. The simulation outcomes reveal a crucial Ma range between 0.6 and 1.2, where THD is significantly minimized. Ma values below 0.6 introduce significant harmonic distortion in the voltage waves, while values surpassing 1.2 lead to appreciable harmonic distortion in the current wave. This study contributes valuable insights for engineers and researchers and aids in the refinement of MMC control strategies and the mitigation of THD-related challenges in power systems.

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“…As the key equip-T ment of energy storage systems, the safety and performance of LIBs are essential to ensure the optimal operation of energy storage power stations [11], [12]. Inappropriate battery health management may lead to a series of issues, including fast aging and capacity degradation, module failure, thermal runaway, fire, explosions, etc., because of the rapid electrochemical reactions [6], [9], [13]. Thus, the establishment of an efficient and high-precision battery management system (BMS) serves as the cornerstone for ensuring the safety and dependability of contemporary energy storage systems.…”

mentioning

confidence: 99%

Critical Review on Improved Electrochemical Impedance Spectroscopy-Cuckoo Search-Elman Neural Network Modeling Methods for Whole-Life-Cycle Health State Estimation of Lithium-Ion Battery Energy Storage Systems

Xiong,

Wang,

Takyi-Aninakwa

et al. 2024

Prot. Control Mod. Power Syst.

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Review of Fault Diagnosis and Fault-Tolerant Control Methods of the Modular Multilevel Converter Under Submodule Failure

Cited by 32 publications

References 131 publications

Robust line voltage sensor-less control of grid-connected MMC converter in PV Applications

Robust line voltage sensor-less control of grid-connected MMC converter in PV Applications

Analyzing Impacts of Amplitude Modulation Index on Performance Characteristics of Three-Phase Nine-Level Modular Multilevel Converters

Critical Review on Improved Electrochemical Impedance Spectroscopy-Cuckoo Search-Elman Neural Network Modeling Methods for Whole-Life-Cycle Health State Estimation of Lithium-Ion Battery Energy Storage Systems

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