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Showing 1 to 19 of 19 for “"Modular Multilevel Converter (MMC)"”.
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Optimal modulation and topology design of modular multilevel converter for grid integration of solar photovoltaic systems
Modular multilevel converter (MMC) stands out among converter topologies for medium/high-power applications. With salient features like modularity and scalability, MMC can meet the requirement of theoretically any voltage level with higher efficiency and superior harmonic performance, using …
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Application of Modular Multilevel Converters (MMC) Using Phase-Shifted PWM and Selective Harmonic Elimination in Distribution Systems
… a power electronics based solution using the modular multilevel converter (MMC) topology to design the MPS system. The market-available power semiconductor devices are analyzed and suitable devices are selected to design the system. The phase-shifted pulse width modulation (PS-PWM) and …
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Controle preditivo com número reduzido de estados aplicado a conversor multinível modular
The modular multilevel converter (MMC) has been a subject of increasing interest for power electronics researchers. Therefore, the use of this topology in the most diverse application areas has been studied, especially in high voltage direct current transmission systems. Thus, this work describes …
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High Step-Up/Down Transformerless Multilevel Converter for Renewable Energy Applications
… on a high step-up/down transformerless dc-dc modular multilevel converter (MMC) that would be applicable to dc power systems. The design achieves high voltage ratios for interfacing renewable energy sources such as photovoltaic and line interactive Uninterruptible Power System (UPS) systems. …
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Control of Modular Multilevel Converters for Grid Integration of Full-Scale Wind Energy Conversion Systems
… on the generator/transformer. Although the multilevel converters including the neutral point clamped (NPC) converter and the active NPC converter meet most of the requirements, they fall short in reliability and scalability. Motivated by modularity/scalability feature of the modular …
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High Voltage Direct Current Energy Transmission Using Modular Multilevel Converters
… direct current (HVdc) energy transmission using modular multilevel converter (MMC) based terminals. It provides a brief comparison between different HVdc technologies, focusing on voltage source converters (HVdc-VSC) with the MMC-based terminal emerging as the topology of choice for ratings less …
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DC Fault Current Analysis and Control for Modular Multilevel Converters
… be an optimal solution. On the other hand, the Modular Multilevel Converter (MMC) is an attractive converter topology choice, as it has advantages such as excellent harmonic performance, distributed energy storage, and near ideal current and voltage scalability. The fault response, on the other …
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Non-pilot Protection of the HVDC Grid
… be (i) adequately fast to prevent damages and/or converter blocking and (ii) reliable to minimize the impacts of faults. This study is mainly focused on the Modular Multilevel Converter (MMC) -based HVDC grid since the MMC is considered as the building block of the future HVDC systems. The studies …
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MOSFET-based MMC for low-voltage DC distribution networks
… loads.To overcome this limit, a high-performance modular multilevel converter (MMC) with parallel-connected MOSFETs is proposed in this thesis. It allows the converter to operate at relatively high voltage with low harmonic content, without the use of large AC filters. MMC also has low switching …
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Control of an H-bridge modular multilevel converter for reliable operation of DC transmission systems
… modulation and control schemes for an H-bridge modular multilevel converter (MMC) that can be used to enhance the transient response of DC transmission systems. The schemes enable H-bridge MMC cell capacitor voltages to be regulated independent of the DC link voltage in a DC transmission system, …
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Switching-Cycle Control and Sensing Techniques for High-Density SiC-Based Modular Converters
… need for the medium-voltage (MV) high-power converters in applications of power distribution systems in urban areas and transportation carriers like ship, airplane, and so forth. The limited footprint or space resource cost such immensely high price that introducing expensive advanced …
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Control and operation of offshore wind farms connected with diode rectifier HVDC systems
… where a diode rectifier is used offshore and a modular multilevel converter (MMC) is used onshore. Compared to MMC based HVDC systems, the main benefits of DR-HVDC are lower investment, lower space requirement, higher efficiency and improved robustness. However, as the diode rectifier is unable …
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DC-DC converter designs for medium and high voltage direct current systems
… research and are the focus of this thesis. The modular multilevel design of dual active bridge (DAB) converters is analysed in light of state-of-the-art research in the field. The multilevel DAB structure is meant to serve medium and high voltage applications. The modular design facilitates …
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Control, Topology and Component Investigations for Power-Dense Modular Multilevel Converters
… electrification, power-electronic converters play the crucial role of transforming electrical energy from one form to another. However, converters today face multiple challenges in meeting ever-growing demands for higher power density, broader operation ranges, and lower costs. The …
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Enhanced Gate-Driver Techniques and SiC-based Power-cell Design and Assessment for Medium-Voltage Applications
… high-density, high-efficiency power electronics converters, one must solve a plethora of challenges. For the MV SiC MOSFET device, a high-performance gate-driver (GD) is a key component required to maximize the beneficial SiC MOSFET characteristics. GD units must overcome associated challenges of …
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Control and operation of HVDC connected offshore windfarm with particular emphasis on faults and black start
… offshore AC fault ride through operation. When modular multilevel converter (MMC) based HVDC connection is used for offshore windfarm system, the responses of both the offshore MMC station and wind turbine (WT) converters need to be carefully designed to ensure their safety operation during …
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Hybrid Modular Multilevel Converter Family and Modular DC Circuit Breaker for Medium-voltage DC (MVDC) Applications
… density DCCB for MVDC systems. The traditional modular multilevel converter (MMC) is widely used for medium voltage (MV) AC/DC conversion due to its modularity, scalability, and reliability. However, the presence of numerous semiconductor devices and capacitors in MMCs results in challenges such …
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Estudio de la tolerancia a fallos de convertidores multipuerto basados en topologías MMC
El convertidor Modular Multinivel (MMC) se ha convertido en una de las topologías multinivel más atractivas para aplicaciones de media/alta tensión, en particular para los sistemas de transmisión HVDC (High Voltage Direct Current). Sus características destacables son: • Una elevada …
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Modeling, Control and Design Considerations for Modular Multilevel Converters
… thesis provides insight into state-of-the-art Modular Multilevel Converters (MMC) for medium and high voltage applications. Modular Multilevel Converters have increased in interest in many industrial applications, as they offer the following advantages: modularity, scalability, reliability, …