摘要
在分析了无刷双馈发电机的转子速d-q双同步坐标系数学模型的基础上,取d轴为定子侧功率绕组磁链的方向,建立定子端电压与功率绕组磁链、控制绕组电流之间的关系式,从而推导出空载并网时的矢量控制策略。同时结合变论域模糊控制算法,选择恰当的可变伸缩因子,使模糊论域随着控制器输入量的变化而变化,以提高对定子端电压控制的精确度和自适应性。最后,采用MATLAB/Simulink仿真软件对控制环节进行仿真,结果验证了所设计的控制策略具有快速的调节性能和良好的鲁棒性。
Based on the analysis of rotor speed math model in d-q reference frame and with d axis as the stator flux orientation,the relationship among stator voltage,power winding flux and control winding current is established,based on which the vector control strategy for the grid connection of BDFG system without load is developed.Combined with the variable universe fuzzy control and the properly selected variable extension factor,the fuzzy universe varies along with the input variable of controller,which improves the accuracy and adaptability of stator voltage control.The control loop is simulated with MATLAB/Simulink and results prove its excellent regulation performance and robustness.
出处
《电力自动化设备》
EI
CSCD
北大核心
2012年第2期99-103,共5页
Electric Power Automation Equipment
关键词
风电
无刷双馈发电机
空载并网
转子速d-q坐标系
模糊控制
仿真
wind power
brushless doubly-fed generator
grid connection without load
d-q coordinates
fuzzy control
computer simulation
