一种新型定子分区式混合励磁电机的设计与分析（英文）

发布时间：2018-08-14 13:52

【摘要】：由于永磁体、励磁绕组和电枢绕组均置于唯一的定子上,传统定子励磁型混合励磁电机的转矩密度受到了限制。提出一种具有更高转矩密度的新型定子分区式混合励磁电机。在该电机中,励磁源(永磁体、励磁绕组)和电枢绕组被分别置于两个定子区域,而转子由调制块组成。从弱磁能力、转矩提升能力和纯永磁转矩三方面综合考虑,设计了电机的尺寸参数,并分析了电机的电磁性能。通过在内区定子上引入磁桥,所提出的定子分区式混合励磁电机的弱磁能力可从12.8%增强到79.4%,而转矩提升能力可从12.1%增强到79.1%。制作了一台样机,在样机上测试了空载反电势和静态转矩,实验结果与有限元分析结果吻合。
[Abstract]:Because permanent magnet, excitation winding and armature winding are all placed on the unique stator, the torque density of traditional stator excitation hybrid excitation motor is limited. A new type of stator partitioned hybrid excitation motor with higher torque density is proposed. In this motor, the excitation source (permanent magnet, excitation winding) and armature winding are placed in two stator regions respectively, and the rotor is composed of modulation blocks. The dimension parameters of the motor are designed from three aspects of the weak magnetic capacity, the torque lifting ability and the pure permanent magnet torque, and the electromagnetic performance of the motor is analyzed. By introducing a magnetic bridge into the stator, the magnetic weakening ability of the stator zonal hybrid excitation motor can be increased from 12.8% to 79.4%, and the torque lifting ability can be increased from 12.1% to 79.1%. A prototype is made and the no-load reverse EMF and static torque are tested on the prototype. The experimental results are in good agreement with the finite element analysis results.
【作者单位】：英国谢菲尔德大学;
【分类号】：TM302

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