Abstract:
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In the wave energy sector, an increasing concern
regarding the grid connection of wave energy converters is
recently being experienced, as well as in the main challenges
resulting from the grid integration of large scale wave power
plants. This increasing interest arise due to the near-commercial
developments of several wave energy converter devices, which
have already proved its hydrodynamic and power take-off
performance. Therefore, this paper proposes a suitable power
processing system configuration and its suitable control design
used for interfacing the grid connection of such high power wave
energy converters while ensuring acceptable grid connection
standards compliance. An advanced filter topology will be
introduced based on the superposition of LCL+Trap filters as an
alternative solution to the conventional LCL filters, as it allows
for smaller filter size, while ensuring a reliable and cost-effective
power processing solution. Finally, the evaluation of the filter
design as well as the power converter control will be introduced
in simulation with the purpose of validating the grid connection
of wave energy converters. |