直驱式风力发电机组变桨调速控制系统探究

Research on Pitch Control System of Direct Drive Wind Turbine

直驱式风力发电机组采用低速多级永磁发电机配全功率变流技术,叶片多采用新型轻质材料,结构更加轻巧简单,效率更高。近些年,直驱式风力发电机逐步向大型风力发电机应用发展。因此,系统分析直驱式风力发电机组原理和变桨特性,探讨直驱型风力发电机变桨控制方案的设计,详细介绍变桨距控制模式和控制特点,并给出变桨控制电路系统的设计方案和控制原理图。直驱风机极大地提高了风力发电机组的可靠性、效率以及可利用率,同时降低了噪音和维护保养成本,延长了设备的使用寿命。

Direct-drive wind turbines use low-speed multi-stage permanent magnet generators with fullpower converter technology,the blades are mostly made of new lightweight materials,the structure is lighter and simpler,and the efficiency is higher.In recent years,direct-drive wind turbines have gradually developed into largescale wind turbines.This paper systematically analyzes the principles and pitch characteristics of direct-drive wind turbines,discusses the design of pitch control schemes for direct-drive wind turbines,introduces the pitch control mode and control features in detail,and gives pitch control Circuit system design scheme and control schematic diagram.The direct drive fan greatly improves the reliability,efficiency and availability of the wind turbine,while lowering the noise and maintenance costs,and greatly increasing the service life of the equipment.