Seixas, MafaldaMelicio, RuiMendes, VictorCouto, Carlos2019-02-152019-02-152015-09-03SEIXAS, M.; [et al] – Simulation of OWES with five-level converter linked to the grid: harmonic assessment. In Proceedings 2015 9th International Conference on Compatibility and Power Electronics (CPE). Costa da Caparica, Portugal: IEEE, 2015. ISBN 978-1-4799-6301-0. Pp. 126-131978-1-4799-6301-0978-1-4799-6300-32166-95462166-9538http://hdl.handle.net/10400.21/9502This paper deals with a computing simulation for an offshore wind energy system taking into account the influence of the marine waves action throughout the floating platform. The wind energy system has a variable-speed turbine equipped with a permanent magnet synchronous generator and a full-power five-level converter, injecting energy into the electric grid through a high voltage alternate current link. A reduction on the unbalance of the voltage in the DC-link capacitors of the five-level converter is proposed by a strategic selection of the output voltage vectors. The model for the drive train of the wind energy system is a two mass model, including the dynamics of the floating platform. A case study is presented and the assessment of the quality of the energy injected into the electric grid is discussed.engOffshore wind energy systemFive-level converterModellingSimulationconference object10.1109/CPE.2015.7231060