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现代永磁电机技术研究与应用开发 总被引:2,自引:0,他引:2
结合电动汽车与风力发电用永磁电机系统的开发,开展了基于多物理域分析与系统仿真的现代永磁电机设计技术研究;提出了多种具有磁场控制能力的新结构永磁电机,以促使永磁电机的设计理念与磁场控制技术不断变革和创新。 相似文献
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前言为了使采用永磁铁氧体的直流永磁微特电机的效率更高,体积更小,同时输出功率更高,以及采用永磁铁氧体的音响设备性能更加宽频化,仿真化,对永磁铁氧体材料提出了更高的要求,即要求有高性能的永磁铁氧体磁体来满足上述应用场合的需要。 相似文献
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永磁电机的现状与发展 总被引:1,自引:0,他引:1
铁氧体永磁材料60年代时在电机上大量应用以后,永磁电机有了很大发展,在80年代出现了钕铁硼稀土永磁材料后发展更快,在汽车、机床、信息产业及家用电器中得到了广泛的应用。文介绍其体积小、重量轻、效率高、使用寿命长、适应性强等优点,介绍了永磁电机的主要类型和品种,并阐述了永磁电机的今后发展趋势;探索最佳永磁磁场和合理选择永磁材料;永磁电机的数字化;永磁直流无刷电动机、永磁同步电机、永磁交流同步伺服电动机 相似文献
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北京钢铁研究总院是中国最早开展稀土永磁研究的单位。自70年代以来相继研制成功1:5型和2:17型稀土钴永磁合金。80年代又后又开发了各类钕铁硼永磁产品,并建立了稀土永磁生产厂,能够生产和销售各类稀土永磁产品。本文简要介绍了双相高性能稀土铁基永磁合金的制造工艺;高稳定NdFeB永磁合金及粘结NdFeB永磁的开发,并列出了各类烧结型稀土永磁,粘结型NdFeB永磁及NdFeB磁粉的物理特性。 相似文献
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简要叙述了粘结NdFeB永磁的特征、制作方法及性能,并介绍和分析了粘结NdFeB永磁在微型永磁电机的应用前景。 相似文献
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本文扼要介绍了铝镍钴永磁、稀土钴永磁在永磁发电机上的应用,及其钕铁硼永磁用来研制大功率永磁发电机的可行性和经济合理性。 相似文献
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Kazuhiro Nishimura 《Electrical Engineering in Japan》2021,214(1):18-25
The strong magnetic field arrays by using cubic permanent magnets are proposed as a magnetic field source. The magnets used two types of the magnetized directions: 6 and 18 directions. The array is three‐dimensional structure: cube consisting of three, five, seven, and nine cubic magnets on the side. There are two types of the structures: through‐hole and dead end in the center. For each cube magnet, the magnetic flux density of the center was calculated by the derived formulae, which are solved the area integral by the integral formulae. It is a feature that the calculations are fast. The directions in which the magnetic flux density of the z‐axis is maximized were selected, and the sum of their magnetic flux density was obtained. At the same time, each sum of the magnetic flux density of the x‐axis and y‐axis was selected to be zero. It was found that the obtained results are independent of the length of one side. Therefore, the structures can also be combined to cover the structures. Although the operating point of the magnet is not taken into account, it was able to find the arrangements of more than 2 T. It was confirmed that the array of 24 cubes was consistent with the experiment. 相似文献
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利用环形脉磁轴承制作了一个轴向静态稳定的卸载装置,用转子的自重补偿径向不稳定因素。立轴旋转系统底部的高温超导磁力轴承动态调节作用。利用圆环电流线圈之间相互作用轴向务的公式,对永磁结构进行了计算以及初步的定性分析。 相似文献
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本文对带永磁的H型桥式磁系统建立了优化设计数学模型,给出了等效磁路及其计算方法,计算结果令人满意。 相似文献
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This paper presents a method of multiobjective optimization design with anti‐demagnetization aiming at the problem of irreversible demagnetization in high‐density permanent magnet synchronous motors (PMSMs) due to temperature and external magnetic field, at the same time considering the volume of permanent magnets and cost, torque ripple, and core loss. In the first step, a two‐dimensional magnetic network model is used to rapidly assess the basic design parameters and its ability to avenge the anti‐demagnetization of the PMSM. In the second step, the finite element method (FEM) is used to design the key parts of motor, and regression models that solve the model of the multiobjective problem are built based on the simulation experiment data. On this basis, multiobjective optimization result using genetic algorithm is used that can achieve a fast and efficiently global optimal solution. © 2014 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc. 相似文献
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