摘要
基于双PWM变频器,建立了双馈风力发电系统的数学模型,给出了转子侧变频器和网侧变频器的电压前馈控制策略,实现了双馈发电机的解耦控制和并网。利用MATLAB SIMULINK建立了仿真模型并对双馈风力发电系统在网侧单相接地、相间短路、电压跌落、电压不平衡等典型故障下进行了仿真。仿真结果验证了该模型的合理性及控制策略的正确性,并对双馈风力发电系统在网侧故障下的暂态进行了分析。
A mathematic model of doubly-fed induction generator wind energy generation system is established based on dual PWM converters.The voltage fed-forward control scheme of generator side converter and grid side converter are given.The decoupled control of doubly-fed induction generator connected to grid is completed.A simulation model by using MATLAB SIMULINK toolbox is realized to demonstrate the transient effect of doubly-fed induction generator under typical grid faults.The simulation results verify the validity of the model and the feasibility of the control scheme.Finally,the transient analysis under grid faults is given.
出处
《西华大学学报(自然科学版)》
CAS
2011年第3期25-30,共6页
Journal of Xihua University:Natural Science Edition
基金
国家中小企业技术创新基金(09C26214301971)
关键词
双馈风力发电系统
双PWM变换器
解耦控制
建模与仿真
暂态分析
doubly-fed induction generator wind power generation system
dual PWM converter
decoupled control
modeling and simulation
transient analysis