考虑风机动态的最大风能捕获策略  

MPPT strategy considering wind turbine dynamics

作　　者：耿华[1] 杨耕[1] 周伟松[2] 

机构地区：[1]清华大学自动化系,北京100084 [2]清华大学核能与新能源技术研究院,北京100084

出　　处：《电力自动化设备》2009年第10期107-111,共5页Electric Power Automation Equipment

基　　金：国家自然科学基金项目(60674096)~~

摘　　要：为进一步提高风电系统效率,提出了一种考虑风机动态的最大风能捕获非线性控制策略。该策略根据风机机械转矩的变化,动态补偿风力发电机的输出功率,提高系统的动态风能捕获量;同时,通过反馈线性化方法,实现风电系统输出的有功和无功功率的解耦控制,简化其工程实现难度。理论分析和仿真结果表明,与传统策略相比,该策略可以实现动态过程中风电系统的最大风能捕获,提高系统的运行效率和动态响应速度。A nonlinear MPPT strategy considering the wind turbine dynamic performance is proposed to improve the efficiency of the wind generator system,which compensates the output power according to the observed turbine mechanical torque so as to improve the wind power extraction. Moreover,deeoupling control of the active and reactive power can be achieved with the proposed strategy based on the feedback linearization theory,which simplifies the control implementation. The results of theoretical analysis and computer simulation show that, the proposed strategy improves the dynamic response and efficiency of wind generator system compared with traditional strategies.

关 键 词：风力发电机 最大风能捕获 滑差功率 非线性控制 动态补偿 

分 类 号：TM315[电气工程—电机]