【作者】 张杰；

【导师】 郑琼林； 黄先进；

【作者基本信息】 北京交通大学 ， 电气工程， 2011， 硕士

【摘要】 摘要：在铁路运输及城市轨道交通系统中,蓄电池、超级电容及飞轮等储能设备可作为电力变流系统的能量补充缓释装置,为变流系统提供旁路能量支持。蓄电池作为电力机车冗余热备电源,为机车控制系统及低压电器系统提供能量,对机车的安全运行起着至关重要的作用。超级电容具有很大的功率密度,可提供短时强大电流以驱动负载设备,以其长寿命、高效率、快速充放电等优异的性能在城市轨道交通系统中得到广泛的应用。本文以蓄电池和超级电容作为储能设备,选用半桥隔离变换器和三电平双向变流器作为变流装置,以实际机车参数及具体城市轨道线路参数为参考,研究储能系统的充放电特性及电路工作性能。本文在研究了直流变换器拓扑结构特性的基础上,确定以两电平半桥变换器和三电平双向DC-DC变换器在HXD2机车蓄电池储能系统及城轨列车三电平双向变流器超级电容储能系统中开展应用研究。论文还对蓄电池的恒压充电、恒流—恒压充电、变电流间歇充电等控制方式及超级电容的充放电特性进行了对比分析研究,并根据在HXD2电力机车及城轨列车的实际应用情况,用MATLAB建模仿真了电路的工作原理与控制特性,设计开发了半桥充电机和三电平双向变流器的主电路,完成了电气结构设计,主开关器件选型,无源器件参数设计,变压器及电感的设计以及滤波器的设计。论文详细介绍了基于DSP2407A的控制系统,包括控制器构成,软件流程及编码调试,并给出了具体储能系统的数字控制方法。最后,研制了一台15kw的三电平双向变流器,并针对超级电容储能系统的各部分硬件进行程序调试,试验的结果表明,储能系统试验平台的硬件设计达到了预计的效果,文中给出了详细的试验记录及分析。更多还原

【Abstract】 ABSTRACT:In the rail transport and urban rail transport system, battery and super capacitor are the energy storage devices for power converter system. As a hot spare redundant power supply for electric locomotives, battery plays a vital role. It provides energy for the locomotive control system and low voltage electrical system. Super capacitor has great energy density, it can provide short powerful current to drive the load, as its high efficiency it has been widely used in the urban rail transit system. In this paper, battery and super capacitor are used as energy storage devices, with half-bridge isolated converter and three-level bidirectional converter, refer to the actual locomotive rail line parameters, the paper studies the energy storage system charging and discharging characteristics and circuit performance.In this paper, two-level half bridge converter and three-level bidirectional converter are usd in battery charger HXD2 train storage system and three-level bidirectional converter super capacitor energy storage system. Further more, this paper analyzes the battery charging methods and super capacitor energy storage characteristics, according to the practical application, simulates the working principle and control characteristics. The half bridge charger and three-level bidirectional converter main ciruit are designed and the paper completed the selection of key components.Based on DSP2407A control system, the paper describes the composition of the control system and the software design process. By using MATLAB/SIMULINK software for modeling, the simulation results show the control method can meet the stability requirements of the system.Finally, a 15kw three-level bidirectional converter is designed and built. By debugging the energy storage system, this paper gives the experimental waveforms and analysis. The results of the experiment show that the energy storage system hardware designed to achieve the expected results.更多还原