The invention relates to a double stator bearingless flux switching motor without rotor yoke magnetic circuit coupling, which comprises a rotating shaft, an inner stator, a rotor and an outer stator arranged in turn along the radial direction. The rotor comprises a rotor support and a rotor core uniformly installed along the circumferential direction of the rotor support. The rotor core is connected with the rotating shaft through the rotor support to form the motor rotor. The inner stator includes an inner stator support, which is provided with a number of inner stator cores along the circumference, and a high coercivity permanent magnet with tangential alternating magnetization is embedded between adjacent inner stator cores; The outer stator includes an outer stator support, which is provided with a number of outer stator cores along the circumference, and a high coercivity permanent magnet with tangential alternating magnetization is embedded between adjacent outer stator cores. The invention solves the problem of coupling the inner and outer stator magnetic circuits of the double stator bearingless flux switching motor under the complex magnetic circuit through the rotor magnetic circuit design without using the magnetic separation ring, effectively reduces the rotor volume and improves the power density and efficiency of the motor. Density and efficiency. Density and efficiency< br/>
【技术实现步骤摘要】
一种无转子铁轭磁路耦合的双定子无轴承磁通切换电机
[0001]
:本专利技术涉及一种无转子铁轭磁路耦合的双定子无轴承磁通切换电机。
[0002]
技术介绍
:磁通切换永磁电机具转子结构简单,位于定子上的永磁体散热效果好的特点,被应用于大功率传动系统中。无轴承磁通切换电机在原有结构的基础上增加了悬浮绕组,使电机具有磁轴承电机的优点。无轴承磁通切换电机为了精确地实现悬浮控制,由永磁体产生的偏置磁场往往小于普通磁通切换电机,这使得电机的功率密度大大降低。采用双定子结构可以充分利用电机内部空间,有效提高电机的功率密度,但内定子与外定子的磁路会在转子轭部产生耦合,对电机的运行产生不利影响。通常可采用隔磁环来解决这一问题,但隔磁环不仅增加转子径向长度,降低电机的功率密度,而且增加了转子的加工难度。
[0003]
技术实现思路
:本专利技术针对上述现有技术存在的问题做出改进,即本专利技术所要解决的技术问题是提供一种无转子铁轭磁路耦合的双定子无轴承磁通切换电机。
[0004]为了实现上述目的,本专利技术采用的技术方案是:一种无转子铁轭磁路耦合的双定子无 ...
【技术保护点】
【技术特征摘要】
1.一种无转子铁轭磁路耦合的双定子无轴承磁通切换电机,其特征在于:包括沿径向依次设置的转轴、内定子、转子以及外定子,所述转子包括转子支架以及沿转子支架的圆周方向均匀安装的转子铁心,所述转子铁心通过转子支架与转轴连接构成电机转子。2.根据权利要求1所述的一种无转子铁轭磁路耦合的双定子无轴承磁通切换电机,其特征在于:所述内定子包括圆环状的内定子支架,所述内定子支架上沿圆周方向均匀开设有若干个内定子铁心槽,每个内定子铁心槽内分别设置有内定子铁心,相邻的内定子铁心之间镶嵌有切向交替充磁的第一高矫顽力永磁体;所述外定子包括圆环状的外定子支架,所述外定子支架上沿圆周方向均匀开设有若干个外定子铁心槽,每个外定子铁心槽内分别设置有外定子铁心,相邻的外定子铁心之间镶嵌有切向交替充磁的第二高矫顽力永磁体。3.根据权利要求2所述的一种无转子铁轭磁路耦合的双定子无轴承磁通切换电机,其特征在于:相邻两个外定子铁心、位于两个外定子铁心之间的第二高矫顽力永磁体、相邻两个转子铁心、相邻两个内定子铁心、位于两个内定子铁心之间的第一高矫顽力永磁体形成磁通闭合回路。4.根据权利要求2所述的一种无转子铁轭磁路耦合的双定子无轴承磁通切换电机,其特征在于:所述内定子还包括内...
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