In this article, we deal with the onboard fast energy conversion system (FECS) that is installed in a wireless railway train (WRT), which receives electrical energy not from the wayside device but from the onboard device when traveling between stations, after getting such energy stored by fast charging during its stopping time at a station. The adopted input-series and output-independent architecture and the interleaving topology can reduce the size and weight of onboard FECS for 1500 V, which is double the operating voltage of the existing 750 V operating voltage. This allows 1200 V class insulated-gate bipolar transistor applications to increase switching frequency and reduce passive component volume. In addition, in order to secure system stability, which is important in any transportation system, a WRT must operate on the basis of simple control. Through a simple and efficient balance control based on a variable current limiter, the input voltage unbalance caused by the input voltage sharing is resolved. Also, it can control charging and discharging based on the energy moving characteristic of the train operation pattern and connection with a high-power energy storage pack. The performance of the onboard FECS at 1500 V with the proposed method is experimentally verified on a 600 kW prototype system.

中文翻译：

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一种采用输入电压共享拓扑和平衡控制方案的无线铁路列车快速充电和大功率系统


在本文中，我们讨论安装在无线铁路列车（WRT）中的车载快速能量转换系统（FECS），该系统在车站之间行驶时不是从路边设备而是从车载设备接收电能。在车站停车期间通过快速充电存储的能量。采用的输入串联、输出独立的架构和交错拓扑可以减小1500 V板载FECS的尺寸和重量，该电压是现有750 V工作电压的两倍。这使得 1200 V 级绝缘栅双极晶体管应用能够提高开关频率并减少无源元件体积。此外，为了确保系统稳定性（这对于任何交通系统都很重要），WRT 必须在简单控制的基础上运行。通过基于可变限流器的简单高效的平衡控制，解决了由输入电压共享引起的输入电压不平衡问题。它还可以根据列车运行模式的能量移动特性以及与大功率储能包的连接来控制充电和放电。采用所提出方法的机载 FECS 在 1500 V 下的性能在 600 kW 原型系统上进行了实验验证。