城市轨道交通列车再生制动能量利用系统方案对比分析

Comparison and analysis of transit train regenerative braking energy utilization system solutions

城市轨道交通列车再生制动能量利用系统包括再生制动能量回馈系统、再生制动能量储存系统和混合型再生制动能量利用系统。回馈型系统可实现交流电网与直流母线的能量双向流动;储能型系统是将列车多余制动能量存储到储能单元中,起动时再将能量释放出来供列车使用,储能元件有超级电容、蓄电池及飞轮;混合型系统是回馈型和储能型的组合,其功能及性能兼具2种系统的特点。3种系统方案各有特点,均可实现列车制动能量回馈利用,减少电网能耗,不仅在节能环保方面有重要意义,对于整个城市轨道交通行业降低运营成本将具有重大影响。

Urban rail transit train regenerative braking energy utilization system consists of the regenerative braking energy feedback system,regenerative braking energy storage system and mixed use of regenerative braking energy system.Feedback type system can realize energy bidirectional flow between AC network and DC bus.Energy storage system stores the excess energy of train braking into the storage unit,then the energy will be released when there is a need by the train.Storage components include super capacitor,battery and flywheel.Hybrid system is a combination of feedback type and energy storage type,and its function and performance have characteristics of the two systems.Three different systems have different features,and all can use the train braking energy feedback,and reduce the energy consumption.It not only has important significance in the aspect of energy saving and environmental protection,but also has significant impact on reducing the operating costs for the whole urban rail transit industry.