Blar i Institutt for elkraftteknikk på forfatter "Karekezi, Yannick Cyiza"
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The Energy Transition's Impact on the Accumulated Average Efficiency of Large Hydrogenerators
Karekezi, Yannick Cyiza; Øyvang, Thomas; Nøland, Jonas Kristiansen (Peer reviewed; Journal article, 2022)The energy transition is aimed to take advantage of the operational flexibility of hydropower to extend the integration of intermittent renewable sources. Consequently, the hydrogenerators will have to operate in regimes ... -
Loss Modeling of Large Hydrogenerators for Cost Estimation of Reactive Power Services and Identification of Optimal Operation
Karekezi, Yannick Cyiza; Melfald, Emil Ghieh; Øyvang, Thomas; Nøland, Jonas Kristiansen (Peer reviewed; Journal article, 2022)As a result of the worldwide energy transition, reactive power generation has started to become a more scarce resource in the power grid. Until recently, reactive power has been an auxiliary grid service that classical ... -
Segmentation Effects in the Modular HVDC Offshore Wind Generator and its Impact on Losses
Karekezi, Yannick Cyiza; Zhang, Zhaoqiang; Olsen, Pål Keim (Chapter, 2023)Worldwide wind power capacity jumped from 7.5 GW in 1997 to 564GW by 2018, according to IRENA. Many regions of the world have strong wind speeds, but the best locations for generating wind power are often remote, where ...