Essays about: "Modular multilevel converters MMC"
Showing result 1 - 5 of 8 essays containing the words Modular multilevel converters MMC.
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1. Closed-loop control and data- recording of a modular-multilevel converter (MMC)
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : Modular multilevel converters (MMCs) are the preferred converter solution in flexible ac transmission systems (FACTS) and high-voltage direct current (HVDC) applications. This is due to the high quality of the voltage and current signals, lower overall losses, and fewer problems with switching-related EMI. READ MORE
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2. Comparative Analysis of Several Designs of Modular Multilevel Converters with Interleaved Half-Bridge Submodules
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : The Modular Multilevel Converter (MMC) is one of the most commonly used active converters in the high-/medium-voltage sector due to its many advantages such as high scalability, high efficiency, modularity and low harmonic contents. However, in low-voltage and high-current applications, classical MMC designs are not very economical. READ MORE
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3. Evaluation of DC Fault Current in Grid Connected Converters in HVDC Stations
University essay from Uppsala universitet/Institutionen för elektroteknikAbstract : The main circuit equipment in an HVDC station must be rated for continuous operation as well as for stresses during ground faults and other short circuits. The component impedances are thus selected for proper operation during both continuous operation and short circuit events. READ MORE
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4. Transmission Systems for Grid Connection of Offshore Wind Farms : HVAC vs HVDC Breaking Point
University essay fromAbstract : Offshore wind is rapidly growing and optimised grid connections are crucial for its success. Generally, costs and losses are higher for HVDC at short distances due to the converters, while HVAC costs and losses increase more rapidly with distance due to the ac cables. READ MORE
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5. Modular Multilevel Converters for Heavy Trucks
University essay from Linköpings universitet/Elektroniska Kretsar och SystemAbstract : This thesis examines alternatives for power supply for a heavy truck application based on five different modular multilevel converter configurations that ultimately feed a 3-phase motor. Advantages and disadvantages of the different configurations are being discussed as well as other important factors that play a role in what configuration that is beneficial for the intended application. READ MORE