摘要
为了克服传统无轴承无刷直流电机悬浮力控制方法所引起的转子径向悬浮力小、控制悬浮力绕组的逆变器需通断次数多、控制系统复杂等缺点,在阐述无轴承无刷直流电机结构及悬浮力产生原理的基础之上,提出了一种悬浮力新型控制策略,即采用悬浮力绕组三相同时导通的控制策略来实现转子稳定悬浮.为验证该新型控制策略的有效性,运用有限元分析方法进行分析计算.并运用Matlab/Simulink对控制系统进行仿真试验.结果表明,在电机尺寸以及悬浮力绕组电流相同的条件下,转子受到的径向悬浮力较传统控制方法提高了35%;该控制系统不仅能够实现转子稳定悬浮,而且具有良好的动静态性能.
To overcome the shortcomings that the suspension forces of rotor were small,the inverter of suspension force windings shut on and off many times and the control systems were complicated by conventional control method of suspension forces in bearingless brushless DC motor( BLDCM),a new control method of suspension force was proposed for BLDCM. Three-phase windings of suspension forces were excited simultaneously to generate radial suspension force in the proposed control method. In order to verify the effectiveness of new control method,the suspension force was analyzed and calculated by finite element method( FEM). The control system was simulated by Matlab / Simulink. The results show that the radial suspension force is increased by 35% with the same currents of suspension force windings by the proposed control method. The rotor can be suspended stably,and the whole control system has fine static and dynamic performance.
出处
《江苏大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
2015年第2期209-214,共6页
Journal of Jiangsu University:Natural Science Edition
基金
江苏省高校科研成果产业化推进工程项目(JHB2012-39)
江苏省"青蓝工程"项目(2014)
江苏省"333工程"项目(2014)
江苏高校优势学科建设工程项目(苏政办发〔2014〕)
关键词
无轴承无刷直流电机
径向悬浮力
控制策略
有限元分析
仿真
bearingless brushless DC motor
radial suspension force
control method
finite element analysis
simulation