Browsing by Author "Helle, Lars"
Senturk, Osman S.; Munk-Nielsen, Stig; Teodorescu, Remus; Helle, Lars; Rodríguez Cortés, Pedro (2009)
Open AccessThis paper proposes a single leg switched or a hybrid PWM (HPWM) method for three-phase three-level HBridge Voltage Source Converters (3L-HB-VSCs). By means of the proposed modulation, a 3L-HB-VSC can generate the ...
Converter structure-based power loss and static thermal modeling of the press-pack IGBT three-level ANPC VSC applied to multi-MW wind turbines Senturk, Osman S.; Helle, Lars; Munk-Nielsen, Stig; Rodríguez Cortés, Pedro; Teodorescu, Remus (2011-09-19)
Restricted access - publisher's policyWind turbine converters demand high power density due to nacelle space limitation and high reliability due to high maintenance cost. Depending on the converter structure, the converter thermal performance determines the ...
Senturk, Osman S.; Helle, Lars; Munk-Nielsen, Stig; Rodríguez Cortés, Pedro; Teodorescu, Remus (2009)
Open AccessThree-level (3L) neutral point clamped (NPC), flying capacitor (FC), and H-bridge (HB) voltage source converters (VSCs) as a grid-side full-scale medium voltage (MV) converter are modeled, controlled, and simulated for ...
Miranda, Hernan; Teodorescu, Remus; Rodríguez Cortés, Pedro; Helle, Lars (2009)
Open AccessA model predictive control strategy for a highpower, grid connected 3-level neutral clamped point converter is presented. Power losses constraints set a limit on commutation losses so reduced switching frequency is ...
Power capability investigation based on electrothermal models of press-pack IGBT three-level NPC and ANPC VSCs for multimegawatt wind turbines Senturk, Osman S.; Helle, Lars; Rodríguez Cortés, Pedro; Munk-Nielsen, Stig; Teodorescu, Remus (2012-07)
Restricted access - publisher's policyWind turbine power capability is an essential set of data for both wind turbine manufacturers/operators and transmission system operators since the power capability determines whether a wind turbine is able to fulfill ...