摘要
针对电气化铁道牵引供电系统存在的负序、谐波、无功及机车过电分相问题,借鉴德国模式,研究了基于三/单相交直交潮流控制器的贯通供电系统。为了适应牵引负荷高电压、大容量的需求,交直交潮流控制器采用二极管箝位五电平结构,其中PWM调制方式采用一种快速SVPWM调制算法。此外还采用一种新颖的辅助稳压电路来解决二极管箝位多电平结构固有的直流侧电容均压问题。最后在Matlab/Simulink下仿真验证了该多电平结构方案的可行性。
In order to tackle the problems of negative sequence, reactive power, harmonics and over-vohage phase- break that caused by traction power supply system, the experience of German ,node is treated as the predigested refer- ence in this paper, and the continuous power supply system based on three-phase/single-phase AC/DC/AC converter is proposed. In order to meet high voltage and high capacity requirements of the traction load, AC/DC/AC power flow controller is based on diode-clamped five-level structure, and the PWM method uses a fast SVPWM modulation algorithm, and learn a novel auxiliary voltage-stabilizing circuit to solve the inherent problem of DC side capacitance balance for voltage in diode-clamped multi-level structure. Finally, the simulation in Matlab/Simulink is used to verify the feasibility of the muhi-evel structure.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2015年第1期26-31,共6页
Proceedings of the CSU-EPSA
基金
中央高校基本科研业务费科技创新项目(SWJTU12CX138)
关键词
贯通供电系统
三/单相交直交潮流控制器
二极管箝位五电平结构
快速SVPWM
直流侧电容均压
continuous power supply system
three-phase/single-phase AC/DC/AC power flow controller
diode-clamped five-level structure
fast SVPWM
DC side capacitance balance for voltage
