基于直接转速控制的风电机组最大功率点跟踪策略研究  

RESEARCH ON MAXIMUM POWER POINT TRACKING STRATEGY OF WIND TURBINE BASED ON DIRECT SPEED CONTROL

作　　者：李佳俊 娄尧林 应京良 林志明 Li Jiajun;Lou Yaoin;Ying Jingiang;Lin Zhiming(College of Electrical Engineering,Zhejiang University of Water Resources and Electric Power,Hangzhou 310018,China;Intelligent Manufacturing College,Taizhou University,Taizhou 318000,China)

机构地区：[1]浙江水利水电学院电气工程学院,杭州310018 [2]台州学院智能制造学院,台州318000

出　　处：《太阳能学报》2024年第10期607-615,共9页Acta Energiae Solaris Sinica

基　　金：浙江省自然科学基金公益项目(LGG21E060001)。

摘　　要：通过分析各风速下风轮气动转矩特性及发电机在各最大功率跟踪点转矩-转速运行轨迹,依据风电机组在最大功率点上风轮气动转矩与发电机转矩平衡的原理,提出基于发电机电磁转矩的动态最优转速的计算方法,然后以该最优转速为控制目标,设计基于转速偏差的反馈控制器,并做恒转速区与变转速区的控制效果分析。仿真与现场测试表明,该直接转速控制策略可实现最大功率点跟踪,在恒转速区与变转速区具有统一的控制方式,控制逻辑简单实用,有望在风电行业推广,有较好的应用前景。This paper analyzes wind turbine rotor aerodynamic torque at various wind speeds and the generator’s torque-speed trajectory during maximum power point tracking.It introduces a dynamic optimal generator speed calculation method based on generator electromagnetic torque.A feedback controller based on speed deviation is then designed and tested for control effectiveness in constant and variable speed zones.Simulation and field tests confirm that this direct speed control approach successfully tracks the maximum power point,offering a unified control solution for both speed zones.The simple and practical control logic holds promise for broad application in the wind power industry.

关 键 词：风电机组 最大功率点跟踪 反馈控制 动态最优转速 直接转速控制 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]