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随着双馈风电机组向大容量、高性能的目标发展,研制出稳定可靠、优化运行的双馈风电机组控制系统,是当前风电机组控制应用领域研究的热点。在双馈风电机组的功率恒定输出和减小机组载荷之间取得协调,达到整体性能的优化是控制研究的重点。针对双馈风电机组减小动态载荷、实现高效稳定控制提出一种模型预测控制策略(Model Predictive Control,MPC),以减小机组风轮不平衡载荷。以3 MW风电机组为对象,基于FAST软件对该控制策略和传统PI控制策略进行仿真比较。结果表明,这种新控制策略可以有效稳定风电机组输出功率和降低机组载荷。
With the development of high-capacity and high-performance DFIGs, a doubly-fed wind turbine control system with stable and reliable operation and optimized operation is the hotspot in the field of wind turbine control applications. In the doubly-fed wind turbine power output and reduce unit load to achieve a balance between the overall performance optimization is the control of the focus. Aiming at the dynamic load reduction and the realization of efficient and stable control of doubly-fed wind turbine generator, a model predictive control (MPC) is proposed to reduce the unbalanced load of wind turbine rotor. Taking 3MW wind turbine as an example, this control strategy and the traditional PI control strategy are simulated and compared based on FAST software. The results show that this new control strategy can effectively stabilize the wind turbine output power and reduce the unit load.