高速永磁发电机电磁设计方法及关键技术研究

发布时间：2018-05-09 23:06

本文选题：高速永磁发电机 + 有限元　；参考：《南京航空航天大学》2014年硕士论文

【摘要】：高速永磁发电机由于具有转速高、体积小等优点,在航空航天等领域得到广泛的应用。当前国内、外现有研究对高速永磁发电机电磁设计的基础理论研究还不够深入完善。基于此,本文将针对高速永磁发电机的结构设计方案、铁心磁场分布、损耗及温升等电磁参数的计算方法进行了研究。根据高速永磁发电机小尺度、高转速的运行特点,提出了发电机的定子和转子结构的设计方案,并针对微型涡喷发动机相配套的高速发电机进行了初步尺寸设计。基于滑移边界法建立了高速永磁发电机磁场计算有限元模型;分析了不同转速、不同电机结构参数对电机电磁性能的影响规律。在磁场计算的基础上,根据铁耗计算模型进行定子铁耗分布的计算,研究了不同铁心材料、不同定子结构尺寸及不同转速情况下的铁耗大小及分布规律。同时还对高转速运行情况下引起的转子涡流损耗、风阻损耗及绕组损耗进行了计算。最后以各损耗组分作为热源进行温度场分析,并分析了不同转速下电机温升的变化规律。设计和实现了一台额定功率400W,发电工作转速80000~100000r/min的涡喷发动机用的发电机系统,搭建高速发电机的试验平台,开展高速发电机电机本体电磁性能参数等相关试验研究。
[Abstract]:High-speed permanent magnet generator has been widely used in aerospace and other fields because of its advantages of high speed and small volume. At present, the existing research on the basic theory of high-speed permanent magnet generator electromagnetic design is not perfect. Based on this, the structural design of high speed permanent magnet generator, the calculation method of magnetic field distribution, loss and temperature rise of high speed permanent magnet generator are studied in this paper. According to the characteristics of high speed permanent magnet generator with small scale and high speed, the design scheme of stator and rotor structure of generator is put forward, and the initial dimension design of high speed generator for micro turbojet engine is carried out. Based on the slip boundary method, the finite element model of magnetic field calculation for high speed permanent magnet generator is established, and the influence law of different rotational speed and different motor structure parameters on the electromagnetic performance of high speed permanent magnet generator is analyzed. Based on the calculation of magnetic field, the distribution of iron loss of stator is calculated according to the calculation model of iron loss, and the size and distribution of iron loss under different core materials, different stator structure and different rotational speed are studied. At the same time, the rotor eddy current loss, wind resistance loss and winding loss caused by high speed operation are calculated. Finally, the temperature field of the motor is analyzed with the loss components as the heat source, and the variation law of the motor temperature rise under different rotational speeds is analyzed. A generator system for turbojet engine with rated power of 400W and working speed of generator 80000~100000r/min is designed and implemented. The test platform of high-speed generator is set up and the related experimental research on electromagnetic performance parameters of high-speed generator body is carried out.
【学位授予单位】：南京航空航天大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM313

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