电气化铁路同相供电试验系统模拟牵引负载方案研究  

Study on Simulated Scheme of Traction Load in Electrified Railway Cophase Power Supply Test System

作　　者：冯金博[1] 解绍锋[1] 邢晓乾[1] 刘晓菊[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《铁道学报》2010年第6期29-33,共5页Journal of the China Railway Society

基　　金：国家科技支撑计划(2007BAA12B05);中央高校基本科研业务费专项资金(SWJTU09CX031)

摘　　要：提出了基于双PWM变流器技术的交-直-交变流器的模拟牵引负载方案。交-直变流环节在电流滞环控制下,能够模拟出给定的牵引负载特性。直-交环节在电流内环电压外环控制下实现电容电压稳定,保证模拟负载两侧有功功率平衡,并将交-直环节吸收的能量,以接近单位功率因数回馈给三相电网,以节约电能。仿真验证了当以实测牵引负荷作为给定负荷时,该方案能够较好地实现对实测牵引负荷的模拟。The paper proposes a simulated scheme of the traction load based on the AC/DC/AC converter with the dual PWM converter technology.The AC/DC variable current link can simulate the characteristics of the traction load with current hysteresis control.The DC/AC link can keep the capacitor voltage stable under the control of the current inner loop and voltage outer loop and can insure the balance of the active power on both sides of the simulated load.In order to save electric energy,the scheme can feed back the energy absorbed from the AC/DC link to the three-phase power system with the approximate unity power factor.It is proved that when regarding the measured traction load as the given load the scheme can achieve simulation of the measured traction load well.

关 键 词：同相供电 模拟牵引负载 PWM 滞环控制 

分 类 号：U223.1[交通运输工程—道路与铁道工程]