@inproceedings{0e27e2c7afa54cc3ab45baa4d41e2a1f,
title = "Impacts of rotor current control targets on DC-link Capacitor Lifetime in DFIG-based wind turbine during Grid Voltage Unbalance",
abstract = "In doubly-fed induction generator (DFIG)-based wind turbines, the DC-link capacitor of the back-to-back (B2B) converters is one of the components that tend to fail most often. The equivalent resistance of electrolytic capacitors is frequency dependent and presents higher values in the low-frequency range. Therefore, additional low-frequency ripple current components will stress the DC-link capacitor and reduce its lifetime. Under unbalanced grid voltage conditions, the conventional vector control strategy of the rotor side converter may be replaced by flexible multi-objective control strategies, leading to different low-frequency harmonics in DC-link capacitor current. Therefore, in this paper the differences between the different control targets with respect to overall RMS current, additional low-frequency ripple current and temperature are analyzed by means of simulations for a 2 MW DFIG wind turbine.",
keywords = "DC-link capacitor., Doubly-fed induction generator, Grid faults, Lifetime estimation",
author = "Holger Jedtberg and Marius Langwasser and Rongwu Zhu and Giampaolo Buticchi and Marco Liserre",
note = "Publisher Copyright: {\textcopyright} 2017 IEEE.; 9th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2017 ; Conference date: 01-10-2017 Through 05-10-2017",
year = "2017",
month = nov,
day = "3",
doi = "10.1109/ECCE.2017.8096623",
language = "English",
series = "2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "3489--3495",
booktitle = "2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017",
address = "United States",
}
