一种新型定子分区式混合励磁电机的设计与分析（英文）  

Design and Analysis of a Novel Partitioned Stator Hybrid Excitation Machine

作　　者：吴中泽 诸自强[1] 

机构地区：[1]英国谢菲尔德大学,英国谢菲尔德S13JD

出　　处：《中国电机工程学报》2017年第22期6543-6556,共14页Proceedings of the CSEE

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。This paper proposes a new partitioned stator hybrid excitation（PSHE） machine. The conventional single stator-HE machine suffers from the space conflict between field sources, i.e. permanent magnets（PMs）, wound field（WF） winding, and armature windings, which are all placed in a single stator. In the proposed PSHE machine, they were separately accommodated in two different stators, between which a rotor consisted of segmented iron pieces was sandwiched. The paper presented design consideration and performance in terms of flux weakening capability, torque enhancement capability, and PM torque without WF winding current. It shows that by introducing iron flux bridges in the inner stator tooth for WF winding magnetomotive force, better hybrid excitation between the PMs and the WF windings can be achieved, resulting in 79.39% flux weakening capability and 79.12% torque enhancement capability, whilst those of the PSHE machine without iron flux bridge are only 12.80% and 12.12%, respectively. A prototype was built and tested to verify the finite element predicted results.

关 键 词：磁通调节能力 弱磁能力 混合励磁 定子分区 转子调制块 转矩提升能力 

分 类 号：TM351[电气工程—电机]