摘要
12/14混合定子磁悬浮开关磁阻电机(HSBSRM)的磁链是计算电磁转矩和径向悬浮力的基础,是实现电机稳定旋转和悬浮的前提。针对常规解析法建立的12/14HSBSRM磁链模型的局限性,提出了基于贝叶斯证据框架最小二乘支持向量机(LS-SVM)的磁链建模方法。通过有限元法分析了HSBSRM悬浮绕组与转矩绕组磁链的耦合关系、悬浮绕组间磁链耦合关系绕组磁链与径向位移关系、悬浮绕组磁链与转子位置角关系,建立了基于贝叶斯证据框架LSSVM的磁链模型,仿真结果表明所提方法能够快速准确的建立磁链模型。
Abstr ac:t The flux linkage of 12/14 hybrid stator-pole bearingless switched reluctance motor ( HSBSRM) is the basis to calculate the electromagnetic torque and the radial levitation force , which is also the premise of realizing of the stabil-ity rotation and reliable suspension of motor .Aiming at the limitation of 12/14 HSBSRM model built by traditional ana-lytical method , a novel modeling method based on least squares support vector machine (LS-SVM) within the Bayesian evidence framework has been proposed .Based on the analysis on the coupling relationship between the torque windings ’ flux curves and suspending windings ’ flux curves , the coupling relationship between suspending windings ’ flux curves , the relationship between the torque windings ’ flux curves and radial displacement , the relationship between suspending windings’ flux curves and rotor position are analyzed by the finite element method (FEM).The flux linkage model of HSBSRM based on LS-SVM within Bayesian evidence framework has been established .Simulation results show that the proposed model has high accurate precision and rapid calculation speed .
出处
《电测与仪表》
北大核心
2014年第17期42-48,共7页
Electrical Measurement & Instrumentation
基金
国家自然基金资助项目(51377074,51307077)
南京工程学院引进人才启动基金资助项目(YKJ201216)
关键词
混合定子
磁悬浮开关磁阻电机
磁链
有限元
贝叶斯证据框架
最小二乘支持向量机
hybrid stator - pole, bearingless switched reluctance motor ( BSRM), flux linkage, finite element method(FEM), Bayesian evidence framework, least squares support vector machine (LS -SVM)