Papers by João Batista Neto
When designing a wind farm layout, we can reduce the number of variables by optimizing a pattern ... more When designing a wind farm layout, we can reduce the number of variables by optimizing a pattern instead of considering the position of each turbine. In this paper we show that, by reducing the problem to only two variables defining a grid, we can gain up to 3% of energy output on simple examples of wind farms dealing with many turbines (up to 1000) while dramatically reducing the computation time.
Two key criteria in wind farm design are the energy yield of the turbines and the environmental i... more Two key criteria in wind farm design are the energy yield of the turbines and the environmental impact of the wind farm. While the energy yield determines the economic viability of a project, the success of the planning process and acceptance by the general population hinge on the wind farm's environmental impact.
We consider a static wind model for a three-bladed, horizontal-axis, pitch-controlled wind turbin... more We consider a static wind model for a three-bladed, horizontal-axis, pitch-controlled wind turbine. When placed in a wind field, the turbine experiences several mechanical loads, which generate power but also create structural fatigue. We address the problem of finding blade pitch profiles for maximizing power production while simultaneously minimizing fatigue loads. In this paper, we show how this problem can be approximately solved using convex optimization. When there is full knowledge of the wind field, numerical simulations show that force and torque RMS variation can be reduced by over 96% compared to any constant pitch profile while sacrificing at most 7% of the maximum attainable output power. Using iterative learning, we show that very similar performance can be achieved by using only load measurements, with no knowledge of the wind field or wind turbine model.
The single-objective yield optimisation of wind turbine placements on a given area of land is alr... more The single-objective yield optimisation of wind turbine placements on a given area of land is already a challenging optimization problem. In this article, we tackle the multi-objective variant of this problem: we are taking into account the wake effects that are produced by the different turbines on the wind farm, while optimising the energy yield, the necessary area, and the cable length needed to connect all turbines.
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Papers by João Batista Neto