This article designs a high speed doubly salient axial electromagnetic motor based on the requirements of high reliability, high power density, and large power capacity for aviation starting generators.

By changing the spatial position of the excitation winding of the traditional doubly salient motor, the magnetic circuit structure of the motor is changed. The axial magnetic circuit is formed by the magnetic shaft and the external magnetic back iron, which improves the asymmetric magnetic circuit structure of the traditional doubly salient electromagnetic motor caused by the concentrated distribution of the stator excitation winding. At the same time, the space of the original armature winding is increased, and the slot filling rate of the armature winding is increased. In addition, the concentrated winding of the excitation winding also saves copper wire, cost savings have been achieved.

Fig.1 The structure of a doubly salient axial electromagnetic motor 

The main content of this article is divided into three parts. Firstly, the development status of multi-electric aircraft aviation power supply was reviewed, and the commonly used generators for aviation power supply were introduced. Then, the structure and working principle of doubly salient axial electromagnetic motor were introduced, and a mathematical model of the motor was established. Next, analyze the no-load magnetic field of the motor, including no-load magnetic density, flux linkage, inductance, etc. Finally, the load characteristics of the motor were obtained by analyzing the power generation load situation.

(a)  External characteristic       (b)  Power characteristics

支持基金：

国家自然科学基金项目(51737006)

 

论文链接：

http://www.motor-abc.cn/djykzyy/article/abstract/20230901

 

推荐引用格式：

沈澳, 孟小利. 高速轴向电励磁双凸极电机设计与特性分析[J]. 电机与控制应用, 2023, 50(9): 1-7.

 

SHEN Ao, MENG Xiaoli. Design and Characteristic Analysis of High Speed Doubly Salient Axial Electromagnetic Motor[J].  Electric Machines & Control Application, 2023, 50(9): 1-7.

 

作者信息

 

 

 

 

 

沈澳，南京航空航天大学电气系硕士研究生。本科毕业于南京航空航天大学自动化学院。研究兴趣为电机与电器。

 

Ao SHEN is currently a Master candidate in the Department of Electrical Engineering at Nanjing University of Aeronautics and Astronautics. He received his B.S. in the School of Automation at Nanjing University of Aeronautics and Astronautics. His research interest is in electric machines and appliances.

 

孟小利，南京航空航天大学自动化学院副教授，硕士生导师，长期从事电力电子及电力传动、航空电源的科研和教学工作。

 

主要研究方向：

1. 交流伺服电机及控制技术

2. 无刷直流电机及控制技术

3．双凸极电机及控制技术

4．高速电机及控制技术

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