To investigate the impact on offshore wind turbines by waves and wind speed non-uniformities caused by wind shear and tower shadow effect
based on a 5 MW monopile offshore wind turbine provided in Openfast
a dynamic model of offshore wind power systems was established to output the mechanical torque under combined impact of wind non-uniformities and waves. The mechanical torque was further fed into a doubly fed induction generator (DIFG) modelled in Matlab/Simulink for co-simulation. Results show that the frequencies from the impact of the wind non-uniformities and waves appear in all spectra of generator speed
power
stator current and rotor current when considering the two factors. The relative influence of wind-speed non-uniformities and waves on generator speed
power
stator and rotor currents varies with wind conditions
and mutual coupling exists among wind shear
tower shadow and wave effects.
关键词
Keywords
references
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