A new frequency coordinated control strategy based on the variable de-loading level for a D-PMSG wind turbine is proposed. First, the D-PMSG wind turbine model and control system model are established. Second, the de-loading control principle of the D-PMSG wind turbine is described, the variable de-loading level control strategy is analyzed according to different wind speeds and additional inertial control is introduced. Then the frequency coordinated control strategy combining variable de-loading level control and additional inertial control is designed for different power reserve areas. Finally, a D-PMSG grid-connected simulation system is built to verify the rationality and accuracy of the frequency coordinated control strategy.

中文翻译：

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D-PMSG风电机组变减载水平频率协调控制策略研究

提出了一种基于可变卸荷水平的D-PMSG风电机组频率协调控制新策略。首先，建立D-PMSG风机模型和控制系统模型。其次，阐述了D-PMSG风电机组的减载控制原理，分析了针对不同风速的可变减载水平控制策略，并引入了附加惯性控制。然后针对不同的动力储备区域设计了可变减载水平控制和附加惯性控制相结合的频率协调控制策略。最后，搭建了D-PMSG并网仿真系统，验证了频率协调控制策略的合理性和准确性。