The intrinsic damping of the superconducting electrodynamic suspension (EDS) system is very small, and even negative damping in some speed ranges. It is necessary to develop electromagnetic damper to improve the suspension stability and running stability of the maglev train. In this paper, the magnetic-electric-mechanical interaction (MEMI) model of superconducting EDS considering superconducting magnets (SCMs) attitude parameters and guideway irregularity, the active electromagnetic damper (AEMD) model based on voltage controlled damping coils, and the co-simulation dynamic model of single bogie and three-group trains with 5 degrees of freedom (DOFs) are established. Firstly, the damping characteristics of EDS system with and without AEMD are analyzed by energy method. The results show that adding AEMD can change the damping of EDS system from negative to positive. Secondly, the influence of acceleration proportional coefficient(ka) on the vibration reduction effect, control voltage and power consumption of AEMD is analyzed. Considering the vibration reduction effect and power limitation, it is suggested that the ka of AEMD should be taken in the range of 0.2 ∼ 0.3, and the minimum value should be taken as far as possible under the premise of meeting the engineering vibration reduction demand. Finally, based on the three-group trains co-simulation model, the effect of AEMD on the vibration attenuation of vehicle system in the speed range of 200 ∼ 600 km/h is evaluated. The results show that AEMD can effectively attenuate the vertical vibration of carbody, frame and SCM in the range of 2.8 ∼ 18.5 Hz, but can not attenuate the vibration of carbody about 1 Hz. AEMD can significantly attenuate the vibration of the vehicle system, so that the vertical Sperling stability index of the head, middle and tail vehicles are reduced to less than 2.5, which improves the ride comfort of the vehicle.

中文翻译：

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基于精细磁-电-机械相互作用模型的主动电磁阻尼线圈超导EDS减振研究


超导电动悬架 （EDS） 系统的本征阻尼非常小，在某些速度范围内甚至为负阻尼。有必要开发电磁阻尼器，以提高磁悬浮列车的悬架稳定性和运行稳定性。本文建立了考虑超导磁体（SCM）姿态参数和导轨不平顺性的超导EDS磁-电-机交互（MEMI）模型、基于电压控制阻尼线圈的主动电磁阻尼器（AEMD）模型，以及具有5个自由度（DOF）的单转向架和三群列车的协同仿真动力学模型。首先，采用能量法分析了有AEMD和无AEMD的EDS系统的阻尼特性;结果表明，加入 AEMD 可以使 EDS 系统的阻尼由负变为正。其次，分析了加速度比例系数（ka）对AEMD减振效果、控制电压和功耗的影响;考虑到减振效果和功率限制，建议AEMD的ka取0.2∼0.3范围内，在满足工程减振需求的前提下尽量取最小值。最后，基于三组列车协同仿真模型，评估了 AEMD 对 200 ∼ 600 km/h 速度范围内车辆系统振动衰减的影响。结果表明，AEMD能有效衰减2.8 ∼ 18.5 Hz范围内的车体、车架和单片机的垂直振动，但不能衰减1 Hz左右的车体振动。 AEMD 可以显着衰减车辆系统的振动，使头、中、尾车辆的垂直 Sperling 稳定性指数降低到 2.5 以下，从而提高了车辆的乘坐舒适性。