地铁再生制动能量逆变回馈电网装置的研究

Application of Regenerative Braking Energy Injected-grid Device for Subway

目前,城市轨道交通再生制动能量利用率较低,大部分由电阻转变成热能消耗掉。为此,设计了一种再生制动能量逆变回馈电网装置,实现再生制动能量的回馈利用,并有效减少了隧道内因电阻发热而产生的温升。阐述了逆变回馈装置的组成及设计方法,给出其控制策略,以单列机车为例进行了仿真模拟,证明该装置在机车制动时能够维持直流牵引网电压的稳定,回馈电能给交流电网。建立了实验模拟装置,通过实验结果验证了该控制方法的可行性和有效性。

At present, the rate of energy utilization is low for the transit regenerative braking on uroan ran, most oi the energy is consumed by the resistance heating.A regenerative braking energy injected-grid device is designed, which makes use of regenerative braking energy and effectively reduces the temperature rise caused by the resistance in the tunnel.This paper describes the composition and the design procedure of regenerative braking energy injected-grid device and presents a control strategy for the device.The simulation of the single train model verifies that the stability of DC-link voltage can be maintained and more power can be feedback to the grid by the proposed device when the train is braking.The feasibility and effectiveness of the proposed control method are validated by the experimental results.