双馈感应风力发电系统新型功率控制策略研究  

An Improved Power Control Strategy for Doubly-Fed Induction Generator Wind Power System

作　　者：买买提热依木.阿布力孜 帕孜来.马合木提 

机构地区：[1]新疆大学电气工程学院,新疆乌鲁木齐830047

出　　处：《计算机仿真》2015年第2期123-126,341,共5页Computer Simulation

基　　金：国家留学基金(2011865505);国家自然科学基金(61364010)

摘　　要：在风力发电功率优化控制问题的研究中,针对双馈感应风力发电系统稳定性问题,推导出双馈感应发电机转子d-q轴电流分量与定子无功功率及转矩之间的数学表达式,提出以定子无功功率和转矩作为参考输入的控制方法,得出系统功率转换的控制策略,建立了风电系统转子侧变换器的矢量控制框图。采用Matlab/Simulink,搭建了1.5MW风力发电系统的仿真模型。运行仿真模型,得到了双馈感应发电机转子电流,双馈风力发电系统的有功功率、无功功率及三相输出电流等信号的波形曲线。仿真结果表明,改进控制策略提高了系统的鲁棒性和输出电能质量,证明了控制策略的有效性和可行性。In this paper, mathematical expressions are derived for Doubly - Fed Induction Generator Wind Power System, which represent the relation about rotor current components of d - q axis, stator reactive power and torque of Doubly- fed Induction Generator, and the control method is also proposed depending on stator reactive power and torque as reference inputs. The control strategy for power conversion of the system is obtained and the vector control block diagram of the rotor side converter is built. A simulation model of 1.5MW wind power generation system is es- tablished using Matlab/Simulink. By operating the simulation model, the waveforms of the signals such as rotor cur- rents, active power, reactive power and three - phase output current for the Doubly - Fed Induction Generator Wind Power System arc obtained. The simulation result shows that the control strategy improves the robustness and the out- put power quality of the system, and verifies the effectiveness and feasibility of the control strategy.

关 键 词：双馈感应发电机 风能 功率控制策略 仿真 

分 类 号：TM743[电气工程—电力系统及自动化]