摘要
为研究直驱永磁同步风力发电机(DPMSG)在电网频率发生变化情况下的暂态特性,建立了电网中风力发电系统数学模型,网侧和机侧变换器分别采用基于电网电压定向和电流前馈补偿的定子磁链定向矢量控制。根据建立的模型仿真分析电网频率下降情况下风机的输出特性进行仿真分析,仿真结果与实测数据对比验证了模型的正确性。利用该模型对电网频率升高时直驱永磁发电机功率、直流电压、转速进行了进一步研究分析,研究结果为分析风电场在电网频率变化期间直驱永磁风力发电系统实际运行、出力变化情况提供了有效依据。
In order to study the transient characteristics of directly driven permanent magnet synchronous generator （ DPMSG） with grid frequency variation , the mathematic model of a wind power generation system is established .The converter in grid side and the converter in machine side adopt stator flux linkage oriented vector control respectively based on grid voltage orien -tation and current feed -forward compensation .The output characteristics of wind turbine are analyzed under the decreases of grid frequency , and the correctness of the established model is verified by the comparison of simulation results with the meas -ured data .Further researches are carried out for the power , DC voltage and rotating speed of directly driven permanent magnet synchronous generator when grid frequency increases by this established model .The presented results provide reference data for output characteristics of DPMSG during grid frequency changes .
出处
《四川电力技术》
2014年第4期58-61,94,共5页
Sichuan Electric Power Technology
关键词
直驱永磁发电机
风力发电
电网频率
暂态特性
模型验证
directly driven permanent magnet synchronous generator （ DPMSG ） wind power generation grid frequency transient characteristic model validation
