Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 39 for “"Multilevel Converters"”.
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Space Vector Modulation and Control of Multilevel Converters
… with the space vector modulation of three-level converters and introduces a computationally very efficient three-level space vector modulation algorithm that is experimentally verified. Furthermore, the proposed space vector modulation algorithm is successfully generalized to allow equally …
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Contributions to Modulation and Control Algorithms for Multilevel Converters
Las actuales tendencias de la red eléctrica han lanzado a la industria a la búsqueda de sistemas de generación, distribución y consumo de energía eléctrica más eficientes. Generación distribuida, reducción de componentes pasivos, líneas DC de alta tensión son, entre otras, las posibles líneas de …
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Modeling, Control and Design Considerations for Modular Multilevel Converters
… 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, distributed …
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Single-Stage Grid-Connected Multilevel Converters: Topologies and Control Strategies
… work, the main challenges and objectives for multilevel power converters in grid-connected applications have been elaborated. To address the identified requirements and challenges, a family of efficient multilevel converters with the single-stage dynamic voltage-boosting feature, reduced …
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High Voltage Direct Current Energy Transmission Using Modular Multilevel Converters
… 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 than 1 …
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DC Fault Current Analysis and Control for Modular Multilevel Converters
… 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 hand, is …
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Modular multilevel converters for solar photovoltaic - battery energy storage system integration
… to their scalable and modular structure, modular multilevel converters (MMC) are suitable for grid integration of PV and battery energy storage system (BESS). This thesis proposes a novel half-bridge submodule MMC (HBMMC) solution to connect distributed PV systems using distributed maximum power …
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Study on multilevel converters for static synchronous compensators with energy storage
… the analysis, comparison and implementation of multilevel power electronic converters for static synchronous compensators (StatComs) with energy storage systems (ESS). There are several main contributions made to the study of multilevel converters for flexible AC transmission system (FACTS) …
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Integration of energy storage components with cascaded H-bridge multilevel converters
"In recent years, multilevel converters have gained considerable attention in medium-voltage motor drive and grid applications. This popularity is owed to their reduced voltage stress on the semiconductor devices used in their structure. In addition, multilevel converters generate near sinusoidal …
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Modeling and Control Strategy for Capacitor Minimization of Modular Multilevel Converters
The modular multi-level converter (MMC) is the most prominent interface converter used between the HVDC grid and the HVAC grid. One of the important design challenges in MMC is to reduce the capacitor size. In the current practice, a rather large capacitor bank is required to store line-frequency …
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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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State Space Modeling and Power Flow Analysis of Modular Multilevel Converters
For the future of sustainable energy, renewable energy will need to significantly penetrate existing utility grids. While various renewable energy sources are networked with high-voltage DC grids, integration between these high-voltage DC grids and the existing AC grids is a significant technical …
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High-Frequency Design Consideration and EMI Mitigation in SiC-based Multilevel Converters
… renewable energy sources. MV power electronics converters are the key elements for power conversion in MV systems and are the focus of this study. Multilevel converter topologies are promising topologies in MV applications because of their reduced voltage stress on devices, excellent output …
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Analysis and design of compact and efficient high step-up flying capacitor multilevel converters
This Thesis was approved for publication on 2017-04-28 at 15:10.
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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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Application of Modular Multilevel Converters (MMC) Using Phase-Shifted PWM and Selective Harmonic Elimination in Distribution Systems
… 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 selective …
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Addressing control and capacitor voltage regulation challenges in multilevel power electronic converters
Multilevel power electronic converters are the current industry solutions for applications that demand medium voltage, reasonable efficiency, and high power quality. The proper operation of these types of power converters requires special control, modulation methods, and capacitor voltage …
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Optically Controlled Vertical GaN finFET for Power Applications
… power devices are mostly electrically triggered. Multilevel converters made of such devices often require complicated gate-driving circuits and are susceptible to electromagnetic interference (EMI). Optically triggered power devices can significantly improve circuit complexity, EMI susceptibility, …
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Application of Neural Networks to Inverter-Based Resources
… network controller emulator for voltage-sourced converters. It delves into how neural networks could enhance cybersecurity of a component through multiple hardware and software implementations of the same component. This ensures that vulnerabilities inherent in one form of implementation do not …
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