【作者】 龙瑞政；

【导师】 郝明晖；

【作者基本信息】 哈尔滨工业大学 ， 机械设计及理论， 2009， 硕士

【摘要】 随着稀土永磁材料技术的发展,以及伺服控制技术的发展,永磁直线电机作为电磁弹射系统的驱动电机的优势更加明显,研究表明永磁直线电机是电磁弹射领域驱动装置发展的重要方向。航母舰载机电磁弹射系统对直线电机提出了更高的要求,因此研究可控性好,大功率的直线电机已经成为研究热点。本文针对电磁弹射场合的特殊要求,以永磁直线同步电机作为直线驱动电机展开研究,首先从结构方案上分析了永磁直线同步电机作为驱动电机必须采用动磁式的结构,并且针对大功率、工艺简单和模块化设计的角度,分析比较了两种不同的集中绕组方案,确定了集中绕组整数槽的方案。针对确定的直线电机的绕组方案,利用有限元分析的方法建立了单边永磁直线同步电机的基本模型,对电机的磁场特点进行了研究。同时详细的分析了电机的永磁体,定子的结构参数对电机电磁力(推力和法向力)特性的影响。直线电机特有的开断结构造成了磁场畸变,但是对于动磁式的直线电机,同旋转电机一样,齿槽效应引起的推力波动仍然是主要原因,针对这一特性,本文展开了对永磁直线同步电机的齿槽力的计算和研究。经过前面的分析和研究,确定了永磁直线同步电机的设计尺寸,根据实际情况研制了一台实验样机。并且构建了样机的矢量控制系统,实现了对永磁直线同步电机的伺服控制,同时对样机进行了推力测试,证明实验数据较好的吻合了有限元的分析结果。更多还原

【Abstract】 With the development of rare-earth permanent magnetic materials, as well as the servo control technology, the advantages of permanent magnet linear motor more apparent, the study shows that permanent magnet linear motor is the major developing directions in the domain of drive motor of electromagnetic launch system. For the electromagnetic aircraft launch system (EMALS), a higher demand was put forward, the linear motor with good controllable performance and high-power density has become a research hotspot.In this paper, for the special requirements of EMALS, to study using permanent magnet linear synchronous motor (PMLSM) as the drive motor, PMLSM must be magnet-moving, first of all, the mechanical structure of PMLSM is analyzed, then in term of high-power, simple and modular design, two different kind of concentrated winding is compared to determine the integer program slot concentrated winding.For determining the linear motor windings program, the finite element analysis method was used to establish a PMLSM basic model and the electrical characteristics of the magnetic field is studied. At the same time, a detailed analysis was carried to study the affection imposed on thrust force of the PMLSM by the parameters of stator and permanent magnet.The unique structure of PMLSM produces the magnetic field distortion, but for the PMLSM with the mover mounted PM, the cogging force caused by cogging effect is still the main reason for thrust ripple, this paper carried out on the PMLSM cogging force calculation and research.After the previous analysis and studies to determine the PMLSM design size, according to the actual situation, an experimental PMLSM was made. And the method of vector control was used to realize the control of PMLSM. The thrust force of PMLSM was tested and the experimental results show good agreement with finite element analysis results.更多还原