风力发电机磁轴承参数设计及控制系统研究

发布时间：2018-06-14 08:24

本文选题：风力发电机 + 轴向磁轴承　；参考：《机械设计与制造》2014年12期

【摘要】：为减小风力发电机的机械摩擦及减少其维护成本,降低风力发电机启动风速,减小旋转阻力矩,提高风能利用率,在垂直轴风力发电机中采用混合轴承支承,即风力发电机径向采用1个径向磁轴承和1个机械轴承支承,轴向采用一个轴向磁轴承来实现五自由度支承。针对轴向磁轴承,首先介绍了其结构及工作原理,然后采用等效磁路法建立数学模型,并按性能指标要求进行参数设计,然后用Ansoft软件对轴向磁轴承磁场及受力等进行分析验证,设计了轴向磁轴承控制系统,并用Matlab软件对磁轴承的控制系统进行了阶跃响应、起浮和扰动等仿真研究。研究结果表明:参数设计合理,控制系统够实现磁轴承可靠及稳定的悬浮。
[Abstract]:In order to reduce the mechanical friction and maintenance cost of the wind turbine, reduce the wind speed at the start of the wind turbine, reduce the rotating resistance moment, and improve the utilization rate of wind energy, the hybrid bearing support is used in the vertical axis wind turbine. In other words, one radial magnetic bearing and one mechanical bearing support are used in the radial direction of the wind turbine, and one axial magnetic bearing is used in the axial direction to realize the support of five degrees of freedom. In this paper, the structure and working principle of axial magnetic bearing are introduced firstly, then the mathematical model is established by using equivalent magnetic circuit method, and the parameters are designed according to the requirement of performance index. Then, the magnetic field and force of axial magnetic bearing are analyzed and verified by Ansoft software. The control system of axial magnetic bearing is designed, and the step response, floating and disturbance of the control system are simulated. The results show that the design of parameters is reasonable and the control system can realize the reliable and stable suspension of magnetic bearings.
【作者单位】：江苏大学电气信息工程学院;
【基金】：江苏省自然科学基金(BK2012707) 江苏省“六大人才”高峰(2011-ZBZZ026) 江苏省研究生科研创新计划(CXZZ13_0682,SJLX_0466) 江苏省高校大学生创新创业训练计划(201410299014Z)
【分类号】：TM315

【参考文献】