FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W146693683> ?p ?o ?g. }

• W146693683 abstract "This work was performed in the frame of collaboration between the Laboratory on Plasma and Energy Conversion (LAPLACE), University of Toulouse, and the Second University of Naples (SUN). This work was supported by Rongxin Power Electronic Company (China) and concerns the use of multilevel converters in High Voltage Direct Current (HVDC) transmission. For more than one hundred years, the generation, the transmission, distribution and uses of electrical energy were principally based on AC systems. HVDC systems were considered some 50 years ago for technical and economic reasons. Nowadays, it is well known that HVDC is more convenient than AC for overhead transmission lines from 800 - 1000 km long. This break-even distance decreases up to 50 km for underground or submarine cables. Over the twenty-first century, HVDC transmissions will be a key point in green electric energy development. Due to the limitation in current capability of semiconductors and electrical cables, high power applications require high voltage converters. Thanks to the development of high voltage semiconductor devices, it is now possible to achieve high power converters for AC/DC conversion in the GW power range. For several years, multilevel voltage source converters allow working at high voltage level and draw a quasi-sinusoidal voltage waveform. Classical multilevel topologies such as NPC and Flying Capacitor VSIs were introduced twenty years ago and are nowadays widely used in Medium Power applications such as traction drives. In the scope of High Voltage AC/DC converters, the Modular Multilevel Converter (MMC), proposed ten years ago by Professor R. Marquardt from the University of Munich (Germany), appeared particularly interesting for HVDC transmissions. On the base of the MMC principle, this thesis considers different topologies of elementary cells which make the High Voltage AC/DC converter more flexible and easy suitable respect to different voltage and current levels. The document is organized as follow. Firstly, HVDC power systems are introduced. Conventional configurations of Current Source Converters (CSCs) and Voltage Source Converters (VSCs) are shown. The most attractive topologies for VSC-HVDC systems are analyzed. The operating principle of the MMC is presented and the sizing of reactive devices is developed by considering an open loop and a closed loop control. Different topologies of elementary cells offer various properties in current or voltage reversibility on the DC side. To compare the different topologies, an analytical approach on the power losses evaluation is achieved which made the calculation very fast and direct. A HVDC link to connect an off-shore wind farm platform is considered as a case study. The nominal power level is 100 MW with a DC voltage of 160 kV. The MMC is rated considering press-packed IGBT and IGCT devices. Simulations validate the calculations and also allow analyzing fault conditions. The study is carried out by considering a classical PWM control with an interleaving of the cells. In order to validate calculation and the simulation results, a 10kW three-phase prototype was built. It includes 18 commutation cells and its control system is based on a DSP-FGPA platform." @default.
• W146693683 created "2016-06-24" @default.
• W146693683 creator A5053964340 @default.
• W146693683 date "2014-01-29" @default.
• W146693683 modified "2023-09-23" @default.
• W146693683 title "Modular multilevel converters for hvdc power stations" @default.
• W146693683 cites W1589194756 @default.
• W146693683 cites W1989478995 @default.
• W146693683 cites W2000573321 @default.
• W146693683 cites W2001235046 @default.
• W146693683 cites W2008044232 @default.
• W146693683 cites W2013651205 @default.
• W146693683 cites W2017671222 @default.
• W146693683 cites W2021061580 @default.
• W146693683 cites W2023783983 @default.
• W146693683 cites W2023844360 @default.
• W146693683 cites W2033103917 @default.
• W146693683 cites W2055896144 @default.
• W146693683 cites W2083048944 @default.
• W146693683 cites W2092747325 @default.
• W146693683 cites W2097500916 @default.
• W146693683 cites W2101994591 @default.
• W146693683 cites W2103779929 @default.
• W146693683 cites W2103829663 @default.
• W146693683 cites W2104515646 @default.
• W146693683 cites W2105424951 @default.
• W146693683 cites W2111134324 @default.
• W146693683 cites W2111311558 @default.
• W146693683 cites W2112214960 @default.
• W146693683 cites W2117608729 @default.
• W146693683 cites W2121909553 @default.
• W146693683 cites W2121997019 @default.
• W146693683 cites W2124703932 @default.
• W146693683 cites W2129721746 @default.
• W146693683 cites W2142076764 @default.
• W146693683 cites W2143430404 @default.
• W146693683 cites W2148669750 @default.
• W146693683 cites W2156232631 @default.
• W146693683 cites W2156481705 @default.
• W146693683 cites W2160830391 @default.
• W146693683 cites W2160957068 @default.
• W146693683 cites W2167373522 @default.
• W146693683 cites W2233711320 @default.
• W146693683 cites W225505944 @default.
• W146693683 cites W2317270792 @default.
• W146693683 cites W2366409093 @default.
• W146693683 cites W2380562184 @default.
• W146693683 cites W2525051914 @default.
• W146693683 cites W2535633408 @default.
• W146693683 cites W2535650958 @default.
• W146693683 cites W2538777286 @default.
• W146693683 cites W2542784237 @default.
• W146693683 cites W2566815404 @default.
• W146693683 cites W2594936970 @default.
• W146693683 cites W2809440190 @default.
• W146693683 cites W3140978577 @default.
• W146693683 cites W594390859 @default.
• W146693683 cites W2178160054 @default.
• W146693683 cites W2183034195 @default.
• W146693683 cites W2504217134 @default.
• W146693683 cites W2527822280 @default.
• W146693683 cites W3098597239 @default.
• W146693683 hasPublicationYear "2014" @default.
• W146693683 type Work @default.
• W146693683 sameAs 146693683 @default.
• W146693683 citedByCount "4" @default.
• W146693683 countsByYear W1466936832015 @default.
• W146693683 countsByYear W1466936832017 @default.
• W146693683 countsByYear W1466936832019 @default.
• W146693683 countsByYear W1466936832021 @default.
• W146693683 crossrefType "dissertation" @default.
• W146693683 hasAuthorship W146693683A5053964340 @default.
• W146693683 hasConcept C101468663 @default.
• W146693683 hasConcept C111919701 @default.
• W146693683 hasConcept C119599485 @default.
• W146693683 hasConcept C121332964 @default.
• W146693683 hasConcept C127413603 @default.
• W146693683 hasConcept C140311924 @default.
• W146693683 hasConcept C163258240 @default.
• W146693683 hasConcept C165801399 @default.
• W146693683 hasConcept C178911571 @default.
• W146693683 hasConcept C24326235 @default.
• W146693683 hasConcept C2776620479 @default.
• W146693683 hasConcept C2778422915 @default.
• W146693683 hasConcept C2781163877 @default.
• W146693683 hasConcept C41008148 @default.
• W146693683 hasConcept C52192207 @default.
• W146693683 hasConcept C62520636 @default.
• W146693683 hasConcept C88182573 @default.
• W146693683 hasConcept C92018576 @default.
• W146693683 hasConceptScore W146693683C101468663 @default.
• W146693683 hasConceptScore W146693683C111919701 @default.
• W146693683 hasConceptScore W146693683C119599485 @default.
• W146693683 hasConceptScore W146693683C121332964 @default.
• W146693683 hasConceptScore W146693683C127413603 @default.
• W146693683 hasConceptScore W146693683C140311924 @default.
• W146693683 hasConceptScore W146693683C163258240 @default.
• W146693683 hasConceptScore W146693683C165801399 @default.
• W146693683 hasConceptScore W146693683C178911571 @default.
• W146693683 hasConceptScore W146693683C24326235 @default.

• next