In collaboration with SolarDuck, MARIN has conducted model tests on a configuration of 54 interconnected floating solar platforms. The 1:20 scale model, measuring 10 by 12 metres, was tested in the research institute’s Offshore Basin to simulate realistic offshore conditions.
For the last couple of years, MARIN has been looking into ways to test big assemblies of multiple models at the same time, instead of just one ship or floating asset. This would make it possible to test floating bridges, floating islands or as in this case, floating solar.
For SolarDuck, MARIN was asked to test 54 interconnected offshore floating solar platforms, representing a real-world capacity of around 6 MW peak solar power. SolarDuck began testing its systems at MARIN two years ago with a single triangular platform, followed by six in a HEX-1 layout last January, and now 54 in a HEX-3 configuration.
Also read: SolarDuck and RWE install floating solar pilot off Dutch coast
New optical measurement system
AS William Otto, project manager at MARIN explains in the video: ‘When you start testing so many models at the same time, you can’t rely on your old measurement techniques. Therefore, we have worked on this new optical measurement system, in which we can track the motions of all these platforms individually. And we do that by placing these optical markers on every platform, and by tracking the markers with sixteen cameras mounted here on the ceiling.’
This setup provides detailed insight into wave shielding effects and inter-platform forces, which are the two most important factors that need to be researched when it comes to these types of platforms. The insights gained support the refinement of floating solar designs. The tests generate valuable data to advance the development and deployment of offshore solar technology as part of the global energy transition.
Also read: VIDEO: How MARIN studies wind propulsion’s impact on operations
Wind has damping effect
Martijn Rodenburg, Mechanical Engineer at SolarDuck, concludes: ‘Across all tests, we’ve observed that wind has a notable damping effect, first on single platforms and even more clearly across full 54 platform arrays. As wind passes across the plant, platform motion visibly decreases. It’s great to see our expectations confirmed.’
Watch the full MARIN video below. The picture at the top is a still from the same video.
Also read: VIDEO: MARIN verifies efficiency of ABB Dynafin propulsion
