城市轨道交通双向变流型混合供电系统控制策略研究

叶宏1郑旺2李俊强2

Control Strategy of Bidirectional Converter Hybrid Power Supply System for Urban Rail Transit

YE HongZHENG WangLI Junqiang
摘要:
双向变流器作为一种PWM(脉冲宽度调制)变流器,能量可以双向流动,应用于城市轨道交通牵引供电系统后,不但可以回收列车制动能量,还能提高列车牵引供电质量。因现场设备空间有限,为了能够替代整流机组,双向变流器应具备容量大、体积小的特点。介绍了桥臂并联和单元并联的多重化并联模式,以及均流度控制、环流抑制和混合控制策略。仿真分析和挂网试验表明,这些控制策略能够有效压制零序环流,能够实现双向变流器与整流机组协调供电。
Abstracts:
Bidirectional converter is a type of PWM (pulse-width modulation) converter, the energy in which can flow in two directions. When applied to urban rail transit traction power supply system, the bidirectional converter can not only retrieve the vehicle braking energy, but also improve the quality of vehicle traction power supply. Limited by the field equipment space, a bidirectional converter should have larger capacity and small size to replace the rectifier unit. In this paper, the multiple parallel mode with bridge arm parallel and unit parallel, the strategies of current sharing control, circulation suppression and hybrid control are introduced. The simulation analysis and hanging net test shows that the control strategies can effectively suppress the zero-sequence circulating current, and achieve coordinated power supply from bidirectional converter and rectifier unit.
引文 / Ref:
叶宏,郑旺,李俊强.城市轨道交通双向变流型混合供电系统控制策略研究[J].城市轨道交通研究,2020,23(1):191.
YE Hong,ZHENG Wang,LI Junqiang.Control Strategy of Bidirectional Converter Hybrid Power Supply System for Urban Rail Transit[J].Urban mass transit,2020,23(1):191.
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