高速磁悬浮系统的电磁兼容特性

Electromagnetic Compatibility of High-speed Maglev System

高速磁悬浮系统是未来轨道交通技术的主要发展趋势,其电磁兼容特性关系到高速磁悬浮系统运营的安全性与可靠性。高速磁悬浮系统的无接触运行方式使系统的电磁环境更为复杂、电磁骚扰特征难以判定。针对此问题,结合高速磁悬浮系统的电磁悬浮技术特点,分析了高速磁悬浮系统内的稳恒及低频磁场分布,采样点的磁场仿真结果满足ICNIRP及EN 45502-2-3-2010中稳恒及低频磁场的限值要求;阐述了车载电网谐波骚扰的时频特性、磁悬浮列车的接地特点及高频泄流原理,为高速磁悬浮系统电磁兼容优化设计和电磁骚扰防护研究提供参考。

High-speed maglev system is the main development trend of future rail transportation technology,and its electromagnetic compatibility characteristics are highly related to the operational safety and reliability.The contactless operation mode of high-speed maglev system makes the electromagnetic environment of the system more complex and the electromagnetic disturbance characteristics are difficult to determine.To address this problem,based on the characteristics of electromagnetic suspension technology employed by high-speed maglev system,this paper analyzes the statistic and low-frequency magnetic field distribution in the highspeed magnetic levitation system,and the simulation results of the magnetic field at the sampling points meet the corresponding limits in ICNIRP and EN 45502-2-3-2010.Meanwhile,this paper illustrates the time-frequency characteristics of harmonic in on-board distribution system,the grounding characteristics and the highfrequency drainage principle of maglev vehicles,which provide references for the electromagnetic compatibility optimization design and electromagnetic interference protection research of high-speed maglev systems.