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针对研究对象直驱式永磁同步风力发电机进行了d-q坐标系下数学模型分析,主要包括风力机、永磁同步发电机、变流器数学模型的分析。从最大功率点跟踪原理出发,提出了风力机组网侧控制策略和发电机侧控制策略。在仿真软件MATLAB/Simulink下搭建了直驱风力发电机组的仿真模型;在正常和故障状态下对其进行仿真研究,并验证了控制策略的合理性和正确性。
The mathematical models of the direct-drive permanent-magnet synchronous wind power generator under the d-q coordinate system are analyzed, including the analysis of the mathematical models of wind turbines, permanent magnet synchronous generators and converters. Based on the principle of maximum power point tracking, a grid-side control strategy and a generator-side control strategy are proposed. The simulation model of direct-drive wind turbine is established under the simulation software MATLAB / Simulink. The simulation is carried out under normal and fault conditions, and the rationality and correctness of the control strategy are verified.