现代防御技术 ›› 2024, Vol. 52 ›› Issue (4): 45-57.DOI: 10.3969/j.issn.1009-086x.2024.04.005
收稿日期:
2023-04-18
修回日期:
2023-09-19
出版日期:
2024-08-28
发布日期:
2024-08-26
作者简介:
张学磊(1994-),男,河北沧州人。工程师,硕士,研究方向为伺服电机控制。
Xuelei ZHANG, Shu WANG, Zhengyu LIU, Chenghao KOU, Zuxu GUO
Received:
2023-04-18
Revised:
2023-09-19
Online:
2024-08-28
Published:
2024-08-26
摘要:
由于内置式永磁同步电机磁饱和特性的存在,使得解析分析电机运行过程中定子所受的径向电磁力缺乏系统有效的方法,不利于在前期设计开发阶段进行电机电磁振动和噪声的抑制。针对内置式永磁同步电机转子不对称磁饱和的问题提出了一种电磁力的解析计算模型。通过将绕组函数法与等效磁路法相结合,推导了考虑电磁饱和情况下的电机磁动势。利用卡特系数计算了电机的等效气隙磁导。通过磁势乘磁导法建立气隙磁场模型,并结合Maxwell应力方程最终建立了电机径向电磁力的解析模型。最终通过有限元法验证了该模型的准确性。该模型能够反应电磁力与电机各结构参数的关系,有利于在设计阶段快速改进电机结构来抑制电机电磁振动和噪声。
中图分类号:
张学磊, 王姝, 刘正宇, 寇成浩, 郭祖旭. 考虑不对称饱和的电机径向电磁力解析建模[J]. 现代防御技术, 2024, 52(4): 45-57.
Xuelei ZHANG, Shu WANG, Zhengyu LIU, Chenghao KOU, Zuxu GUO. Analytical Modeling of Radial Electromagnetic Force of IPMSM Considering Asymmetric Saturation[J]. Modern Defense Technology, 2024, 52(4): 45-57.
参数 | 数值 |
---|---|
额定转速/(r·min-1) | 3 000 |
额定电压/V | 220 |
额定功率/kW | 20 |
额定转矩/(N·m) | 64 |
槽数 | 48 |
极对数 | 4 |
定子外径/mm | 210 |
定子内径/mm | 130 |
转子外径/mm | 128 |
转子内径/mm | 48 |
电机轴向长度/mm | 140 |
表1 永磁同步电机主要结构参数
Table 1 Main parameters of PMSM
参数 | 数值 |
---|---|
额定转速/(r·min-1) | 3 000 |
额定电压/V | 220 |
额定功率/kW | 20 |
额定转矩/(N·m) | 64 |
槽数 | 48 |
极对数 | 4 |
定子外径/mm | 210 |
定子内径/mm | 130 |
转子外径/mm | 128 |
转子内径/mm | 48 |
电机轴向长度/mm | 140 |
电流有效值/A | 电流相角/(°) | 电磁力时间阶次 | 电磁力空间阶次 | ||
---|---|---|---|---|---|
平均误差/% | 最大误差/% | 平均误差/% | 最大误差/% | ||
20 | 90 | 1.23 | 3.45 | 0.74 | 1.76 |
50 | 0 | 0.65 | 2.07 | 1.96 | 2.78 |
50 | 36 | 2.63 | 4.12 | 0.89 | 1.84 |
80 | 54 | 3.71 | 5.25 | 2.87 | 3.22 |
110 | 0 | 4.33 | 7.24 | 3.12 | 4.66 |
140 | 72 | 5.15 | 6.13 | 4.47 | 4.87 |
140 | 90 | 6.11 | 7.82 | 5.28 | 5.37 |
170 | 18 | 5.87 | 7.54 | 5.36 | 5.16 |
表2 径向电磁力计算误差对比
Table 2 Comparison of the error of the radial electromagnetic force
电流有效值/A | 电流相角/(°) | 电磁力时间阶次 | 电磁力空间阶次 | ||
---|---|---|---|---|---|
平均误差/% | 最大误差/% | 平均误差/% | 最大误差/% | ||
20 | 90 | 1.23 | 3.45 | 0.74 | 1.76 |
50 | 0 | 0.65 | 2.07 | 1.96 | 2.78 |
50 | 36 | 2.63 | 4.12 | 0.89 | 1.84 |
80 | 54 | 3.71 | 5.25 | 2.87 | 3.22 |
110 | 0 | 4.33 | 7.24 | 3.12 | 4.66 |
140 | 72 | 5.15 | 6.13 | 4.47 | 4.87 |
140 | 90 | 6.11 | 7.82 | 5.28 | 5.37 |
170 | 18 | 5.87 | 7.54 | 5.36 | 5.16 |
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