双定子盘式运动整流发电机发电特性

doi:10.12382/bgxb.2023.0902

摘要/Abstract

摘要：

针对军事户外活动充电不方便的问题,提出一种可用于军用背包的双定子盘式运动整流永磁发电机。该发电机轴向尺寸小、携带方便,能够实现人体运动能量的收集。基于该发电机的结构特点和工作原理,建立其多环等效解析模型,应用积分法对该发电机的空载气隙磁密、反电动势以及负载输出电压和输出功率进行解析计算,并与有限元仿真结果进行对比分析。通过对该发电机不同结构参数和进给速度的输出功率及效率分析得出:该发电机输出功率受极弧系数的影响效果并不明显,受永磁体厚度和气隙长度的影响较小,受盘式外转子齿数和齿轮传动系数的影响较大;通过增大模数、进给速度和有效电枢长度可以有效提高该发电机的输出功率及效率。

关键词: 盘式永磁发电机, 机械整流, 电磁特性, 输出功率

Abstract:

Aiming at the problem of inconvenient charging for military outdoor activities, a double-stator disc motion rectifier permanent magnet generator (DSMR-PMG)that can be carried in military backpacks is proposed, which is small in axial size and easy to carry, and can realize the collection of human movement energy. A multi-ring equivalent analytical model is established based on the structural characteristics and working principle of the generator, The no-load air-gap magnetic density, back electromotive force (EMF), load output voltage and output power of the generator are analytically calculated by integral method, and the calculated results are compared with the simulated results. Through the analysis of the output powers and efficiencies of the generators with different structural parameters and feed speeds, it is concluded that the output power of the generator is not obviously affected by the polar arc coefficient, is less affected by the thickness of permanent magnet and the length of air gap, and is greatly affected by the number of teeth of disc outer rotor and the gear transmission coefficient. The output power and efficiency of the generator can be effectively improved by increasing the modulus, feed speed and effective armature length.

Key words: disc permanent magnet generator, mechanical rectification, electromagnetic characteristics, output power

中图分类号:

TM313

陈阳, 刘欣. 双定子盘式运动整流发电机发电特性[J]. 兵工学报, 2024, 45(12): 4612-4622.

CHEN Yang, LIU Xin. Power Generation Characteristics of DSMR-PMG[J]. Acta Armamentarii, 2024, 45(12): 4612-4622.

图/表 19

图1 DSMR-PMG结构

Fig.1 DSMR-PMG structure diagram

图2 DMSR-PMG工作示意图

Fig.2 Working diagram of DMSR-PMG

图3 DMSR-PMG齿轮传动关系

Fig.3 DMSR-PMG gear transmission relationship

图4 DSMR-PMG多环等效解析模型

Fig.4 Multi-ring equivalent analytical model of DSMR-PMG

图5 DMSR-PMG轴向电磁结构

Fig.5 Axial electromagnetic structure of DMSR-PMG

表1 DSMR-PMG的结构参数

Table 1 Structural parameters of DSMR-PMG

参数	数值	参数	数值
m	2	D_ui/mm	114
Z_c	48	D_uo/mm	197
Z_b	32	D_li/mm	53
Z_s	16	D_lo/mm	91
Z_o	96	B_r/T	1.25
N_c	30	μ_r	1.05
P	4	δ/mm	1.0
Q	24	b_m/mm	4.3
h_m/mm	4	α_p	0.8

图6 空载气隙磁密解析与仿真结果对比

Fig.6 Comparison between theoretical and simulated results of no-load air-gap magnetic density

图7 空载反电势解析与仿真结果对比

Fig.7 Comparison between theoretical and simulated results of no-load back EMF

图8 单相绕组相等效电路图

Fig.8 Equivalent circuit diagram of single-phase winding

图9 负载输出电压解析与仿真结果对比

Fig.9 Comparison of theoretical and simulated results of load output voltage

图10 结构参数对输出功率、损耗以及效率的影响

Fig.10 Influences of structural parameters on output power, losses and efficiency

图11 结构参数对体积功率密度的影响

Fig.11 Influences of structural parameters on volumetric power density

图12 多参数变化对输出功率的影响

Fig.12 Influence of multiparameter variations on output power

图13 负载电阻对输出功率的影响

Fig.13 Influence of load resistance on output power

图14 负载电阻对损耗的影响

Fig.14 Influence of load resistance on losses

图15 负载电阻对效率的影响

Fig.15 Influence of load resistance on efficiency

图16 进给速度对输出功率的影响

Fig.16 Influence of feed speed on output power

图17 进给速度对损耗的影响

Fig.17 Influence of feed speed on losses

图18 进给速度对效率的影响

Fig.18 Influence of feed speed on efficiency

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