Optimization of the Electro-Mechanical and Grid Interactions for AWE systems

The power output of AWE systems fluctuates periodically, what is a well-known problem in terms of grid integration. This issue will be treated at an AWE farm level, using optimal control and design optimisation techniques. A model including electrical and mechanical system constraints will be develo


AWE systems, whether in pumping or drag mode, intrinsically deliver a power output that periodically fluctuates in the 10 seconds to 1 minute time scale. In the pumping mode, this effect is most salient as the power output ranges from large power generation to minor power consumption phases. The integration of AWE systems into the power grid will require that this feature of AWE is adequately treated. The problem of power fluctuation will be treated at the AWE farm level, using collaborative optimal control and design optimization techniques. The aim is to develop optimization models that will properly describe the interaction between the mechanical and electrical components of AWE systems, as well as their interaction with the power grid. In order to study these interactions properly, an aerodynamic model of an AWE system will be adjusted for this project. The constraints and dynamics imposed by the variable-speed generator and the power electronics will be studied and incorporated in the large-scale simulation and optimization models currently developed by the AWE community. A special care will be taken to provide smooth model formulations, compatible with derivative-based optimization. Additionally, grid integration problems are considered that are currently the object of intensive studies in the conventional wind energy community. This includes the delivery of power support to the grid and the management of the intermittence of the power generation. Strong and weak power grids are considered, what includes scenarios considering different types of grid dynamics as well as appropriate requirements in terms of power quality and grid support.

PhD Researcher

Postgraduate Degree in Wind Power Systems at Aalborg University, Denmark.

MSc Thesis : Controller Interaction Assessment between a Full-Scale Converter Wind Turbine and a MMC-HVDC Transmission System


Dr. S├ębastien Gros is Assistant Professor at the department of Signal and Systems at Chalmers University of Technology, Sweden, where he conducts research on energy-related problems, and optimal control. He received his MSc degree in mechatronics from EPFL, and obtained his PhD in 2008 from the Automatic Control Laboratory, EPFL. He did his post-doc with OPTICON/OPTEC, at KU Leuven, Belgium.