摘要
在分析变速恒频双馈风电系统常规MPPT控制方法的基础上,结合滑模控制与极值搜索控制原理,提出一种新的风电系统MPPT控制方法,并针对其参数变化对控制性能的影响进行研究。该控制方法的唯一输入变量为电机定子侧输出有功功率,输出为发电机转子速度的优化给定值,避免了常规控制方法需要测量风速、获取风机模型及参数、计算功率和转速的微分等缺点。仿真结果证明了其有效性。
Based on the analysis of conventional MPPT control methods for wind power generation system （WPGS） , a novel control method of maximum power point tracking （MPPT） for variable speed constant frequency double fed WPGS was proposed, and the influence of parameter variation on control performance was analyzed. The designed method was combined the idea of sliding model （SM） control and extremum seeking control （ESC）. The needed input is only output active power of stator, and the output is optimal command rotor speed. It avoids some difficult problems of conventional MPPT control methods, such as measuring wind velocity, getting wind turbine model and parameters, detecting gradient of power and rotor speed. The simulation resuhs prove its validity.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2012年第12期2193-2197,共5页
Acta Energiae Solaris Sinica
基金
中国博士后科学基金(201003553)
国家博士后科学基金(20080440154)
江苏省博士后科学基金(0802004B)
关键词
风电系统
MPPT
滑模控制
极值搜索控制
wind power generation system
maximum power point tracking
sliding model control
extremum seeking control
