与传统机械齿轮相比,磁场调制式磁力齿轮输入与输出轴之间非机械连接,具有无磨损、无润滑、大速比与过载保护等特点,使得其在变速机械方面具有特殊应用价值.然而,由于两转子间存在非刚性磁耦合特性,导致在启动以及负载和速度发生变化时,出现暂态振荡现象.为了提高整个传动系统的动态稳定性,提出一种在高速转子侧增加阻尼绕组的结构设计,在电磁场有限元分析基础上,建立了动态仿真模型,对磁力齿轮增加阻尼绕组前后动态性能进行对比研究,结果证明阻尼绕组结构能有效减小传动系统的振荡幅值,缩短调节时间.%Compared to conventional mechanical gears, field modulated magnetic gears (FMMG) have special practical value in variable speed mechanical field as the characteristics of free from friction lubrication, large speed ratio, intrinsic overloading protection feature and non mechanical contacted configuration. However, magnetic gear always experience transient oscillations due to their non-rigid magnetic coupling between two rotors while undergoing starting and changes in speed or load. In order to improve the dynamic stability of the whole transmission system, the damper windings is introduced to the high-speed rotor. Based on the field computations by finite element analysis, the dynamic behavior model is built, and the dynamic performance of the magnetic gear with and without damper windings is researched. The results show that the setting time and oscillation amplitude for torque and speed of load side can be reduced effectively.
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