摘要
根据风力机的运行特性,推导出变速恒频风力发电系统风速与风力机输出功率的数学关系,提出一种变速恒频风力发电机最大功率捕获方法即基于功率给定的最大风能追踪的控制策略,分析了通过功率控制进行最大风能追踪的具体过程;然后根据双馈电机运行特性,建立了双馈电机在旋转坐标系下定子有功、无功功率的数学表达式,提出磁场定向的解耦矢量控制策略解耦控制方法,并采用一种改进的磁链观测器,最后利用Matlab/Simulink建立仿真模型进行仿真分析,仿真结果验证了该控制策略的正确性和有效性。
First, this paper describes the operating characteristics of the wind turbine, then deduced the VSCF wind power system wind speed and wind turbine power of mathematical relations, proposed a VSCF wind generator maximum power capture method that is based on the power given maximum wind energy tracking control strategy, analysis of the specific process control by the maximum wind power tracking. Then according to the double-fed motor operating characteristics, the establishment of a doubly-fed machine in a rotating coordinate system of stator active and reactive power of mathematical expressions, then proposing decoupling control strategy that is field oriented vector control strategy, and an improved flux observer was utilized. Finally the simulation model was established based on Matlab/Simulink, the simulation analysis is carried out, simulation results verify the correctness and effectiveness of the control strategy.
出处
《哈尔滨理工大学学报》
CAS
北大核心
2017年第4期58-64,共7页
Journal of Harbin University of Science and Technology
基金
国家自然科学基金(5140070496)
关键词
最大风能追踪
有功、无功解耦
矢量控制
maximum wind energy tracking
active, reactive decoupling
vector control
