磁性齿轮
同轴
非圆齿轮
转矩密度
转矩脉动
转子(电动)
扭矩
磁场
螺旋锥齿轮
工程类
电气工程
物理
声学
机械工程
直接转矩控制
感应电动机
电压
热力学
量子力学
作者
Jungang Wang,Li-Qun Qian,Bin Zhang
出处
期刊:International Journal of Applied Electromagnetics and Mechanics
[IOS Press]
日期:2022-03-14
卷期号:68 (3): 295-309
摘要
Magnetic gear is a non-contact transmission mechanism, which overcomes the drawback of mechanical gear transmission. Although the series multi-stage magnetic gear can provide a large gear ratio compared to the single-stage magnetic gear, the lower torque density of the series multi-stage magnetic gear limits its use in high-power wind turbines. According to the magnetic gear field modulation mechanism and the differential transmission method, a differential multi-stage coaxial magnetic gear transmission device is proposed, which can achieve transmission with a large gear ratio and large torque density. Based on the differential multi-stage coaxial magnetic gear structure and its working principle, the finite element method is used to simulate the electromagnetic performance of the multi-stage coaxial magnetic gear. Futhermore, the electromagnetic performance of the two stages of the proposed magnetic gear are compared. The results show that there is a significant difference between the the electromagnetic performance of the first stage and that of the second stage. The torque ripple of the first stage is more dramatic than that of the second stage. The torque ripple amplietude of the inner rotor of the first stage is 5.08‰ larger than that of the second stage. The torque ripple amplietude of the outer rotor of the first stage is 4.591‰ larger than that of the second stage.
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