分布式直驱永磁风力发电系统输出阻抗分析

摘要

The transfer function model of the small signal disturbance components of the system is de-duced in detail by analyzing the wind power generation unit model in the distributed power supply system, and then the small signal control model and the output impedance expression of wind power unit in d and q axis are obtained respectively. In the frequency domain,the output impedance is simulated and ana-lyzed in different bus voltage,flux linkage and filter capacitor. The simulation results are of certain refer-ence value for the parameter design of the system.%通过对分布式供电系统中风力发电单元模型的分析,详细推导出系统各小信号扰动分量的传递函数模型,继而分别得出风电单元d、q轴下的小信号控制模型以及输出阻抗表达式.在频域范围内的不同母线电压、磁链、滤波电容下,对其输出阻抗进行了详细的仿真分析,仿真结果对该系统的参数设计具有一定的参考性.