永磁直驱风力发电机异常工况转轴变形分析  

Analysis of Shaft Deformation in AbnormalWorking Conditions of the PMSG

作　　者：李正飞 杨程涛 LI Zhengfei;YANG Chengtao(Dongfang Electric Machinery Co.,Ltd.,618000,Deyang,Sichuan,China)

机构地区：[1]东方电气集团东方电机有限公司,四川德阳618000

出　　处：《东方电气评论》2025年第2期28-32,共5页Dongfang Electric Review

摘　　要：电机作为风力发电机组的核心,长期安全稳定至关重要。某风场一台2 MW永磁直驱电机在台风来临时,发生制动器故障,制动器无法松开刹车盘,导致刹车盘急剧磨损,因刹车盘位于电机轴系,为确定故障对电机零部件是否造成损伤,对该台电机进行下架返厂拆解检查维修。本文通过拆解后电机零部件实际尺寸测量以及对测量出现差异的转轴使用有限元分析方法对转轴变形进行复核,分析制动器闭合工况下发电机持续运行对转轴造成的影响,分析发现电机转轴变形,刹车盘磨损严重,无法继续使用。对永磁直驱风力发电机的设计参数的确定、风场运维运行监控提供了参考价值。As the core of a wind turbine,the motor is very important for long-term safety and stability.When a 2 MW permanent magnet synchronous generator(PMSG)in an extreme weather of typhoon was coming,the brake failed,and the brake disc could not be released,resulting in sharp wear of the brake disc.The brake disc was located in the motor shafting.In order to determine whether the fault caused damage to the motor parts,the motor was removed from the shelf and returned to the factory for dismantling,inspection and maintenance.This paper measured the actual size of the motor parts after disassembly and used finite element analysis method to review the deformation of the shaft with differences in measurement,analyzed the impact of the continuous operation of the motor on the shaft under the closing condition of the brake,and found that the shaft of the motor was deformed,and the brake disc was seriously worn,making it impossible to continue to use.It provides a reference value for determining the design parameters of PMSG and monitoring the operation and maintenance of the wind farm.

关 键 词：永磁直驱风力发电机 有限元法 制动器异常 变形分析 

分 类 号：TM315[电气工程—电机]