Browsing NTNU Open by Author "Bergna Diaz, Gilbert"
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Improving Small-Signal Stability of an MMC with CCSC by Control of the Internally Stored Energy
Freytes, Julian; Bergna Diaz, Gilbert; Suul, Jon Are Wold; D'Arco, Salvatore; Gruson, Francois; Colas, Frederic; Saad, Hani; Guillaud, Xavier (Journal article; Peer reviewed, 2017)The DC-side dynamics of Modular Multilevel Converters (MMCs) can be prone to poorly damped oscillations or stability problems when the second harmonic components of the arm currents are mitigated by a Circulating Current ... -
Small-signal model analysis of droop-controlled modular multilevel converters with circulating current suppressing controller
Freytes, Julian; Bergna Diaz, Gilbert; Suul, Jon Are Wold; D'Arco, Salvatore; Saad, Hani; Guillaud, Xavier (Chapter, 2017)This paper presents a small signal eigenvalue analysis applied to a droop-controlled HVDC terminal based on the Modular Multilevel Converter (MMC) topology. The applied linearised model is derived from previous modelling ... -
Voltage control for optimization of power transmission for a long subsea HVAC cable
Engebretsen, Christen Paulov (Master thesis, 2017)The objective of this thesis is to make a dynamic system representation of a long HVAC subsea cable, to investigate the use of controlling the operation voltage to optimize the active power transmission of the cable. The ...