高压直流轴向混合励磁双凸极发电机的结构及特性分析*

doi:10.11985/2022.02.008

电气工程学报 ›› 2022, Vol. 17 ›› Issue (2): 65-72.doi: 10.11985/2022.02.008

• 特邀专栏:电气化交通中的电能变换与利用新技术 • 上一篇下一篇

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高压直流轴向混合励磁双凸极发电机的结构及特性分析^*

马昕晨(), 陈志辉()

南京航空航天大学自动化学院南京 210016

收稿日期:2022-02-28 修回日期:2022-05-16 出版日期:2022-06-25 发布日期:2022-08-08
通讯作者: 陈志辉 E-mail:maxinchen1997@163.com;chenzhh@nuaa.edu.cn
作者简介:马昕晨,女,1997年生,硕士研究生。主要研究方向为特种电机及控制。E-mail： maxinchen1997@163.com
基金资助:
*航空科学基金资助项目(20200040052001)

Topology and Characteristic Analysis of HVDC Axial Hybrid Excitation Doubly Salient Machine

MA Xinchen(), CHEN Zhihui()

College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016

Received:2022-02-28 Revised:2022-05-16 Online:2022-06-25 Published:2022-08-08
Contact: CHEN Zhihui E-mail:maxinchen1997@163.com;chenzhh@nuaa.edu.cn

摘要/Abstract

摘要：

270 V高压直流体制是现代飞机电源系统的重要发展方向之一。依据高压直流发电机具有自启动和短路电流限制能力的要求,提出了轴向混合励磁双凸极发电机,在对基本结构和工作原理进行描述的基础上,通过磁路分析得到了电机气隙磁场随励磁电流的变化规律,并采用有限元仿真加以验证,详细分析了电机的磁场分布、磁链、反电势、输出电压及负载特性等。结果表明,轴向混合励磁双凸极电机相磁链双极性变化,且正弦度高,调磁范围宽,可实现完全灭磁,同时电机运行时效率高,适用于航空高速运行。

关键词: 270 V高压直流体制, 轴向混合励磁双凸极发电机, 磁路分析

Abstract:

The 270 V high voltage DC(HVDC) system is one of the important development directions of modern aircraft power system. According to the requirements of self-starting and short-circuit current limiting capabilities of high-voltage DC generator, an axial hybrid excitation doubly salient machine(AHEDSM) is proposed. Based on the description of the basic structure and working principle, the variation law of air gap magnetic field with excitation current is obtained by magnetic circuit analysis, which is verified by finite element simulation. The magnetic field distribution, flux linkage, back EMF, output voltage and load characteristics of the machine are analyzed in detail. The results show that the AHEDSM has bipolar variation of phase flux linkage, high sinusoidal degree and wide field regulation range, which can realize complete demagnetization. At the same time, the machine has high efficiency and is suitable for aviation high-speed operation.

Key words: 270 V high voltage DC system, axial hybrid excitation doubly salient machine, magnetic circuit analysis

中图分类号:

TM351

马昕晨, 陈志辉. 高压直流轴向混合励磁双凸极发电机的结构及特性分析^*[J]. 电气工程学报, 2022, 17(2): 65-72.

MA Xinchen, CHEN Zhihui. Topology and Characteristic Analysis of HVDC Axial Hybrid Excitation Doubly Salient Machine[J]. Journal of Electrical Engineering, 2022, 17(2): 65-72.

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参考文献 16

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参数	数值
机壳外径/mm	172
电机总长/mm	105
定转子长度/mm	30
定子外径/mm	164
气隙直径/mm	110.8
定子齿高/mm	19.7
转子内径/mm	56
转子齿高/mm	19
永磁体厚度/mm	4
永磁体宽度/mm	10
励磁绕组匝数	180
电枢绕组匝数	4×13

电机	功率/ kW	转速/ (r/min)	轴长/ mm	定子外径/ mm	功率密度/ (kW/m³)
DSEM	5.2	4 800~18 000	160	188	2 210
DSHEM	5.5	4 200~6 000	120	158	1 238

高压直流轴向混合励磁双凸极发电机的结构及特性分析^*

Topology and Characteristic Analysis of HVDC Axial Hybrid Excitation Doubly Salient Machine

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