摘要
采用了ANSYS通用有限元软件对机座进行模态分析,通过分析机座前四阶固有频率与电机旋转频率,发现第一阶固有频率16.3 Hz与转速1 000 r/min频率相近,机座振动较为明显。将圆筒形机座改为方形机座,并提高机座刚度,模态仿真结果及振动试验结果表明,方形机座低阶固有频率与电机工作转速频率不重合,振动速度减小,方形机座有利于电机的稳定运行。
ANSYS general finite element software for the modal analysis was used. We find the first natural frequency 16.3 Hz is equal to speed 1 000 r/rain with the analysis of frequencies and the vibration of base is obvious. We changed the cylindrical base to a square base and increased the stiffness of the base. The results of modal analysis and vibration test show that the square base＇s low-order natural frequencies are different from the speed frequencies, and the vibration velocity is reduced. The square base is conducive to the stable operation of the generator.
出处
《电机与控制应用》
北大核心
2013年第3期17-19,56,共4页
Electric machines & control application
基金
海上风电关键技术研究(2010CB736201)
关键词
双馈发电机
振动
模态分析
固有频率
double feedback wind generator
vibration
modal analysis
natural frequency
