Introducing variable geometry into WEC designs would add a second control knob to These control surfaces, like pitching blades in wind turbines, willĪdd significant load-shedding capabilities in larger wave environments. NREL is investigating load-shedding capabilities when designing WECs with variable-geometryĬontrol surfaces. Sea states the structural loads are controlled, allowing for extended power production. However, NREL researchers are rethinking WEC designs to guide the way to the next-generation, cost-competitive systems of tomorrow.Įmploying variable geometry, the WEC shape can be changed so that in more energetic The PTO is commonly the only means of maximizing power and limiting Hull and possess a singular means of operational control: the generator, or power ECs traditionally consist of a fixed-geometry Structural cost of the device and increasing energy capture are two paths toward reducing Of WEC devices, as they must be designed to withstand large wave loads. Roughly 35%–50% of the price of wave energy can be attributed to the structural costs NREL is working to develop next-generation power maximization, load-shedding, cost-reduction,Īnd peak-to-average power control strategies for variable-geometry wave energy converters Variable-Geometry Wave Energy Conversion and Control
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