新型无轴承开关磁阻电机双相导通数学模型  

Novel Mathematical Model of Bearingless Switched Reluctance Motors With Two-Phase Excitation

作　　者：曹鑫[1] 邓智泉[1] 杨钢[1] 王晓琳[1] 

机构地区：[1]南京航空航天大学航空电源航空科技重点实验室,南京210016

出　　处：《电工技术学报》2006年第4期50-56,共7页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(50377012);航空基础科学基金(99F52044);国防基础研究基金(K1600060603);航空科学基金(05F52040)资助项目

摘　　要：针对传统无轴承开关磁阻电机数学模型单相电流导通模式的局限性,提出了一种适用于单、双相导通的无轴承开关磁阻电机数学模型。在建立两相电流导通的等效磁路模型基础上,确定电感矩阵,推导出两相电流导通的径向悬浮力和电磁转矩的表达式。基于该数学模型的双相电流导通模式极大程度地拓宽了无轴承开关磁阻电机的工作区域,增加了其承受径向负载的能力。利用磁场分析法验证了该数学模型的正确性和优良的工作特性。In view of limitations of mathematical model only suited for the single-phase excitation mode in bearingless switched reluctance motors （BSRM）, a novel mathematical model of BSRM with one or two-phase excitation is proposed. The inductance matrix is constructed based on the magnetic equivalent circuits in the two-phase excitation mode. And new mathematical formulas of radial force and magnetic torque are derived. The operating area of BSRM can be expanded to a great extent. The capability of bearing radial force is enhanced greatly. Computer simulations with magnetic-field analytical-method verify the validity and the fine characteristics of the new mathematical model. Two optimal methods to distribute currents of two-phase windings including main windings and radial force windings for practical applications are also proposed.

关 键 词：无轴承开关磁阻电机 数学模型 双相导通 导通模式 

分 类 号：TM301[电气工程—电机]