Results 71 to 80 of about 3,029,816 (219)
High Voltage, EarlyView.ABSTRACT The alternate arm converter (AAC) is one of the most efficient multilevel topologies based on voltage source converters (VSCs), which has recently gained attention in various applications, particularly in high voltage direct current (HVDC) systems.
Ehsan Akbari, Milad Samady Shadlu
wiley +1 more source
High Voltage, EarlyView.ABSTRACT To effectively suppress transient overvoltages in HVDC systems, the design and experimental validation of a multi‐module series controllable arrester are presented. The voltage‐limiting performance, series voltage equalisation capability, and robustness under fault conditions in high‐voltage scenarios require further research.
Tai Yang +4 more
wiley +1 more source
Improvement of Commutation Failure Prediction in HVDC Classic Links
, 2011 In this thesis, an evaluation of the existing control system for ABB: s HVDC Classic Links is performed in order to investigate whether a possible improvement to commutation failure prediction is possible and to be recommended.
Ivarsson, Johanna
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The brain in heart failure [PDF]
, 2004 After atrial fibrillation, heart failure is the second most frequent cardiac association of stroke. Deteriorating left ventricular systolic function appears to increase the risk of cardioembolic stroke in heart failure.
Pullicino, Patrick
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High Voltage, EarlyView.ABSTRACT Amid the ongoing global energy transition, the short‐circuit ratios of AC power grids are continuously decreasing. Grid‐forming voltage source converter‐based high voltage direct current transmission (GFM VSC‐HVDC) systems have therefore come to the forefront of attention.
Cheng Peng +7 more
wiley +1 more source
COMMON SENSE LAW: Making Right/s in the Liberal City
International Journal of Urban and Regional Research, EarlyView.Abstract This article, co‐authored by encampment and university scholars, is concerned with how homeless persons challenge rightlessness. We do so by advancing a conceptual framework of common sense law, arguing that such contestations take place not only in courtrooms but also in the lived spaces of homelessness.
Ananya Roy +3 more
wiley +1 more source
TAXI, CHILLI AND MOBILE PARTY BRANCH: Reterritorialization of Migrants in Urban Villages, Shenzhen
International Journal of Urban and Regional Research, EarlyView.Abstract In China as well as in other countries, migrants often grapple with urban inequities by actively reshaping the functions and meanings of their environments. While acknowledging established frameworks such as place‐making and urban informality, this study adopts a complementary lens, framing migrants’ everyday practices as a process of ...
Xinrui Gao, Jennifer Day, Sun Sheng Han
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HVDC transmission and commutation failure
, 2015 LAUREA MAGISTRALELa trasmissione ad alta tensione in corrente continua (HVDC) è largamente utilizzata nelle linee caratterizzate da lunghe distanze e da elevata potenza in transito, oltre che nei collegamenti tra diversi paesi, grazie ai suoi indubbi ...
HE, JIALIANG
core
International Journal of Urban and Regional Research, EarlyView.Abstract Earlier writings on the political importance of play have discussed how it can make players conscious of the possibilities of otherwise worlds. Prefigurative politics has very similar aims, but the discussion between the two has been limited.
JONNE SILONSAARI
wiley +1 more source
Study on lightning overvoltage and commutation failure in UHV AC/DC hybrid system
, 2019 Due to the high UHV AC/DC transmission line tower, the working voltage amplitude on the wire is large, causing lightning accidents. The paper first analyses the impact of lightning strike point on lightning overvoltage of 1000 kV UHV transformer ...
Yongshuai Chen +4 more
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