永磁体助磁的单相双凸极电机优化设计

doi:10.16180/j.cnki.issn1007-7820.2020.09.001

Abstract

Abstract:

In this paper, the optimization design of permanent-magnet-assisted single-phase doubly salient motor is studied. The basic equations for the ideal operating condition of the motor are derived, and the design step of the motor are summarized by referring to the design principle of the switched reluctance motor.Self-starting of the motor is achieved by using a tapered air gap. A permanent-magnet-assisted single-phase doubly salient motor with power rating of 45 W and rated speed of 2 000 r·min^-1 is designed by using the summarized design step. The influence of the main structural parameters of the motor on the efficiency and cogging torque is calculated by simulation, and its regularity is summarized, which provids a reference for motor optimization. The relationship between the ratio of the tapered air gap and the starting ability of the motor is discussed, and the motor is optimized by Taguchi experimental design method. The optimized motor efficiency is 89.86%, which is 4.46% higher than that before optimization, vorifying the effectiveness of motor design and optimization.

Key words: permanent-magnet-assisted single-phase doubly salient motor, optimized design, performance analysis, Taguchi method, tapered airgap, cogging torque

CLC Number:

TN787

SHANGGUAN Xuanfeng,MA Yatao,WANG Shuangping,HU Gangqiang,LI Feixiang. Optimal Designing of Permanent-magnet-assisted Single-phase Doubly Salient Motor[J].Electronic Science and Technology, 2020, 33(9): 1-9.

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References 16

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参数	数值
额定功率/ W	45
额定转速/ r·min^-1	2 000
定子极数	2
转子极数	4
定子极弧/(°)	90
转子极弧/(°)	45

参数	数值
定子外径/mm	84.00
定子内径/mm	42.00
轴向长度/mm	21.00
第一气隙/mm	0.40~0.60
第二气隙/mm	9.20
隔磁槽宽度/mm	4.00
转子轭部高度/mm	7.00
转轴直径/mm	10.00
气隙比率	1.50
定子左右轭部宽度/mm	12.00
定子上下轭部高度/mm	8.00
永磁体高度/mm	4.80
永磁体宽度/mm	39.00

参数	a	b/(°)	c/mm	d/mm
水平1	1.5	30	4.0	5.1
水平2	1.7	35	4.5	5.4
水平3	-	40	5.0	5.7

实验次数	a	b	c	d	效率/%
1	1.5	30	4.0	5.1	89.01
2	1.5	30	4.5	5.4	89.79
3	1.5	30	5.0	5.7	89.57
4	1.5	35	4.0	5.1	89.17
5	1.5	35	4.5	5.4	89.44
6	1.5	35	5.0	5.7	89.76
7	1.5	40	4.0	5.4	89.51
8	1.5	40	4.5	5.7	89.86
9	1.5	40	5.0	5.1	89.82
10	1.7	30	4.0	5.7	89.26
11	1.7	30	4.5	5.1	89.47
12	1.7	30	5.0	5.4	89.21
13	1.7	35	4.0	5.4	89.53
14	1.7	35	4.5	5.7	89.76
15	1.7	35	5.0	5.1	89.48
16	1.7	40	4.0	5.7	89.33
17	1.7	40	4.5	5.1	89.19
18	1.7	40	5.0	5.4	89.27

参数	水平	效率/%
气隙比率	水平1	89.55
气隙比率	水平2	89.39
转子极弧	水平1	89.39
	水平2	89.52
	水平3	89.50
隔磁槽宽度	水平1	89.30
	水平2	89.58
	水平3	89.52
永磁体磁化高度	水平1	89.36
	水平2	89.46
	水平3	89.59

Optimal Designing of Permanent-magnet-assisted Single-phase Doubly Salient Motor

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参数	方差	比重/%
气隙比率	0.025 355	9.46
转子极弧	0.031 787	11.86
隔磁槽宽度	0.129 767	48.43
永磁体磁化高度	0.081 027	30.24

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