无轴承交替极永磁电机集中式悬浮绕组结构及其优化设计方法  

Structure of Concentrated Suspension Windings and Its Optimization Design Methods of Bearingless Consequent-Pole Permanent Magnet Motor

作　　者：丁强[1,2] 邓智泉[1] 王晓琳[1] 

机构地区：[1]南京航空航天大学自动化学院,南京210016 [2]南京工业职业技术学院能源与电气工程学院,南京210023

出　　处：《电工技术学报》2015年第18期104-111,共8页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(50977043)

摘　　要：在一台12槽8极无轴承交替极永磁电机上研究了集中式悬浮绕组结构对电机悬浮性能的影响,研究并提出能够提高悬浮性能的绕组结构及优化方法。首先,分析两相和三相传统集中式绕组径向存在较强耦合关系的原因。其次,研究一种带辅助线圈的三相改进集中式绕组结构,并提出一种带辅助线圈的两相改进集中式绕组结构以验证两相绕组经优化改进作为悬浮绕组的可能性。然后,为优化改进集中式悬浮绕组结构,研究了基于悬浮力解析的绕组优化法。但该方法优化过程复杂,从简化绕组优化设计过程角度,提出基于悬浮磁动势总谐波畸变最小的绕组优化法。最后,将两种绕组优化法用于两相和三相改进集中式悬浮绕组的优化中,理论和有限元分析结果表明本文所提优化方法的有效性。In this paper, the influence of structure of concentrated winding on suspension performance is studied at a bearingless consequent-pole permanent magnet motor with 12 slots and 8 poles. Improved concentrated suspension winding structures and the related optimization methods have been studied. Firstly, the reason that a strong coupling exists between radial degrees of freedom is analyzed in two-phase and three-phase conventional concentrated windings. Then, based on the structure of a three-phase improved concentrated suspension winding with sub-coils, a two-phase improved concentrated suspension winding with sub-coils is proposed. To optimize the two types of improved concentrated suspension windings, the optimization method based on suspension force expressions is presented. However, due to its complicated optimization process, a new and simple optimization method based on minimization of total harmonic distortion of suspension magnetic motive force is proposed. Finally, two optimization methods are applied to optimize the two-phase and three-phase improved concentrated suspension windings. Case study verifies the two methods.

关 键 词：无轴承电机 交替极 绕组结构 优化方法 总谐波畸变最小 悬浮性能 

分 类 号：TM343[电气工程—电机]