轴向磁通反作用飞轮电机PCB绕组损耗优化研究  

Study of PCB Winding Loss in Reaction Flywheel Motor with Axial Flux

作　　者：王孝伟[1,2] 杨贵杰[3] 汪云涛 宁蜀悦 

机构地区：[1]深圳航天科技创新研究院,深圳518057 [2]广州大学,广州510006 [3]哈尔滨工业大学,哈尔滨150001

出　　处：《微特电机》2016年第6期5-9,共5页Small & Special Electrical Machines

基　　金：中国博士后基金项目(2015M582423);广东省自然科学基金项目(2015A030310486)

摘　　要：基于目前的卫星姿态控制反作用飞轮空间利用率低的现状,提出了一种基于PCB绕组和轴向磁通的超薄反作用飞轮,可以较大地提升飞轮空间利用率。根据PCB绕组的特点对PCB绕组的损耗进行了数值分析和有限元分析。首先采用数值分析的方法分析了PCB绕组涡流损耗和环流损耗的机理,然后又通过三维有限元方法,对不同的PCB绕组导体的并联情况和PCB绕组端部短路情况展开损耗研究。通过有限元仿真可以发现:PCB绕组在电流较大的情况下,建议采取多导体并联,其中在采取与PCB平面垂直的方向上并联,抑制损耗效果最为明显,但多层的PCB成本相对较高。在PCB同一层并联的情况下,多个并联导体忌在绕组端部采取短路,一旦采用单端短路结构,应该使被端部短路的多条支路在空间上差180°电角度。该研究对设计基于PCB绕组结构的永磁电机具有一定的指导意义。Based on the present situation of low space utilization ratio of satellite reaction flywheel, one ultrathin reactionflywheel was put forward on the basis of PCB winding and axial flux, which can greatly improve the flywheel space utilization.The loss of different PCB winding structures was analyzed and studied according to the characteristics of PCB winding：firstly, numerical analysis was used to analyze mechanisms on PCB winding eddy-current loss and circulating-currentloss, then according to three-dimensional finite element method, researches on losses were carried out for different parallelconnections of PCB winding conductor and end short-circuit of PCB winding. It can be found by finite element simulationthat： in the case of high electricity, PCB winding is suggested to be connected in parallel with multi-conductor. And theeffect of inhibiting loss is extremely obvious when it is connected in parallel with multi-conductor in the direction vertical toPCB plane, but the cost of multilayer PCB is relatively high. On condition that PCB be connected in parallel in the samelayer, multiple parallel conductors are forbidden to take short circuit at the end of winding. Once single short-circuit structureis used, the electrical angle difference in space among multiple subcircuits with end short circuit is 180°.

关 键 词：PCB绕组 轴向磁通 涡流损耗 反作用飞轮 

分 类 号：TM35[电气工程—电机]