【摘要】 为了准确分析双馈发电机(DFIG)功率的解耦控制,针对实验室容量为4.5kW的小型双馈发电机,运用了一种IP(PI控制器的改进形式)电流内环和电压外环的控制来实现解耦控制。在M-T坐标系下搭建了有功功率和无功功率的解耦控制的数学模型,并利用Matlab/Simulink软件对其数学模型进行了仿真,得出了系统相应的电压、电流、功率的仿真曲线;然后根据相应的参数进行实验并与仿真结果相比较,其实验结果与仿真结果的吻合性反映了该模型符合双馈发电机功率解耦的实际运行特性,从而证明了该数学模型的有效性与实用性,为双馈发电机在解耦控制的设计上提供了有效的控制方案。更多还原

【Abstract】 To accurately analyze the power decoupling control of DFIG, one control method using IP (the improved form of PI controller) is applied to the current loop and voltage loop of a small DFIG with 4.5 kW capacity of laboratory to realize the decoupling control. The mathematical model of decoupled active power and reactive power in M-T frame is built and discussed in detail, and is simulated with software named Matlab/Simulink, through which the waveform diagram of power current and voltage is obtained. Experiment is implemented with the corresponding parameters and compared to the simulated results. The coincidence between the simulation results and the experiment results reflects the compliance between the actual operation characteristics and the mathematical model of DFIG, which proves the correctness and validity of the mathematical model, and provides reliable control plan for designing decoupling of DFIG.更多还原