风力发电机磁轴承参数设计及控制系统研究  

Parameter Design and Control System Study on Magnetic Bearing Wind Generator

作　　者：朱熀秋[1] 陈帅[1] 朱利东[1] 钱一[1] 

机构地区：[1]江苏大学电气信息工程学院,江苏镇江212013

出　　处：《机械设计与制造》2014年第12期40-44,共5页Machinery Design & Manufacture

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)

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。In order to reduce the mechanical friction and the maintenance cost, the start-up wind speed and the resistance torque of traditional wind generator system, to increase the utilization rate of wind power, a hybrid bearing technology is used in a vertical axis wind generator, namely a radial magnetic bearing, a radial mechanical bearing and a axial magnetic bearing is used in the wind generator, to implement the five degrees of freedom support. For the axial magnetic bearing, firstly the structure and working principle is introduced, then the equivalent magnetic circuit method is adopted to establish the mathematical model, and the parameters are designed according to the pefformance requirements, then the Ansoft is used to analyze the magnetic field and force of the axial magnetic bearing. Finally, a control system of axial magnetic bearing is designed, and the Matlab software is used to simulate the step response, floating, disturbance and other performance of the control system. The simulation results show that the parameter design is reasonable and the system of this axial magnetic bearing can achieve reliable and stable suspension.

关 键 词：风力发电机 轴向磁轴承 参数设计 仿真 控制系统 

分 类 号：TH16[机械工程—机械制造及自动化] TH133.3