An axial gap-type HTS bulk synchronous motor excited by pulsed-field magnetization with vortex-type armature copper windings
An axial gap-type HTS bulk synchronous motor excited by pulsed-field magnetization with vortex-type armature copper windings
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DOI：
10.1109/tasc.2005.849617
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发表时间：
2005-06-01
影响因子：
1.8
通讯作者：
Kitano, M
中科院分区：
文献类型：
--
作者：
Matsuzaki, H;Kimura, Y;Kitano, M
研究了一种由熔融织构Gd-Ba-Cu-O块材磁体组装而成的高温超导同步电动机。该电机是轴向间隙型无刷同步电机，具有八个旋转体磁场磁极。液氮循环以冷却转子部件。在零场冷却条件下，采用一对涡旋式电枢铜绕组进行脉冲磁场磁化。体块表面上的俘获峰值场密度从0.5 T变化到0.8 T。大块磁体表面上的捕获峰值磁场0.5 T提供了3.1 kW的电机性能，转速为720 rpm。磁极块体磁体表面的场密度分布是各向异性的，不同于理想的圆锥形。应用于电枢的优化脉冲电流波形和采用导致空间均匀磁通捕获的大块晶体磁体的复合材料是用于加强来自转子的场磁通和电机转矩的有前途的方法。
We studied a high-temperature superconducting synchronous motor assembled with melt-textured Gd-Ba-Cu-O bulk field magnets. The motor is an axial gap-type, brushless synchronous motor with eight rotating bulk field magnet poles. Liquid nitrogen is circulated to cool down the rotor components. Pulsed field magnetization was performed to excite the bulk field magnets by using a pair of the vortex-type armature copper windings under the zero-field cooling. The trapped peak field density on the surface of the bulk was varied from 0.5 T to 0.8 T. The trapped peak magnetic field 0.5 T on the surface of the bulk magnets provided the motor performance of 3.1 kW with 720 rpm. The field density distribution on the pole bulk magnet surface is anisotropic and different from the ideal conical shape. The optimized pulsed current waveform applied to the armature and the employing of a composite of bulk crystal magnets leading to a spatially homogeneous flux trapping are promising methods for reinforcement of the field flux from the rotor and the motor torque.