摘要
在分析双馈发电机交流励磁变速恒频发电运行原理的基础上,利用MATLAB/SIMULINK分别搭建了空载并网控制模型和并网后的追踪最大风能变速恒频发电运行模型,并结合两种模型进行分时仿真,解决了传统仿真方式中由于并网前后定子电压输出方向不同,而无法讨论并网瞬间工况的问题。仿真结果表明了文中所建立的风力发电机模型不但可以在变速情况下可靠并网,而且并网后还能在变速恒频运行的基础上实现有功功率、无功功率的解耦控制。
Base on the analysis of the characteristics of doubly-fed AC excited wind turbines in variable speed constant frequency（VSCF） operation,using MATLAB/SIMULINK to establish a comprehensive system simulation on the no-load operation before the cutting-in and the VSCF wind-power generation by tracing maximal wind-energy after the cutting-in.In combination with the carrying out of time-domain simulation of two models,the problems of the instant industrial conditions are solved in the traditional simulation ways in which the stator voltage output direction is different to discuss before and after the connection with grid.The simulation results offer the DFIG control system that is established in the paper can not only be connected to grid safely at variable speed,but also achieve decoupled control of active power and reactive power on the basis of VSCF operation after grid-connection.
出处
《西安理工大学学报》
CAS
北大核心
2010年第1期81-86,共6页
Journal of Xi'an University of Technology
关键词
双馈风力发电机
变速恒频
矢量控制
double-fed induction generator（DFIG）
variable speed constant frequency（VSCF）
vector control
