Non-ideal feedforward torque control of wind turbines: Impacts on annual energy production & gross earnings

The Science of Making Torque from Wind

Hackl, Christoph^1 ; Schechner, Korbinian^1

MSE Research Group Control of Renewable Energy Systems (CRES), Technische Universitat München, Boltzmannstr. 15, Garching

85748, Germany^1

关键词: Annual energy productions;    Control of wind turbines;    Electrical drive systems;    Energy productions;    High level controllers;    Optimal operation point;    Wind turbine system model;    Wind turbine systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/753/11/112010/pdf
DOI  :  10.1088/1742-6596/753/11/112010

来源: IOP

【 摘 要 】

We discuss non-ideal torque control in wind turbine systems. Most high-level controllers generate a reference torque which is then send to the underlying electrical drive system (generator+inverter) of the wind turbine system to steer the turbine/generator to its optimal operation point (depending on the wind speed). The energy production heavily depends on the mechanical power (i.e. the product of rotational speed and generator torque). However, since torque sensors in the MW range are not available or extremely expensive, the underlying torque control system is implemented as feedforward control and, therefore, is inherently sensitive to parameter variations/uncertainties. Based on real wind data and a wind turbine system model, we discuss causes and impacts of non-ideal feedforward torque control on the energy production and the annual gross earnings.