城市轨道交通制动能量逆变回馈系统研究

On Brake-reproduced Energy Inverter System in UMT

城市轨道交通以电力为动力,由供电网向车辆提供电能,驱动车辆前进。车辆到站电制动时,产生大量的再生制动能量。目前我国城市轨道交通车辆再生制动能量只有很少部分被利用,大部分通过电阻转变成热能而被消耗掉。研究了一种新型城市轨道交通车辆再生制动能量逆变回馈设备,实现车辆再生制动能量的回馈利用,以降低能耗、节约能源。

The train of urban mass transit starts and brakes frequently during its operation, so the DC traction power system which supplies the energy for the train is kept on accelerating and rurming. Before the train is arriving at a station and decelerates, the electric brake system will produce a large amount of energy in a very short time. The reproduced energy must be absorbed effectively, otherwise it will increase the bus voltage, and finally damage some equipment and affect the braking effect. At present, there is only a little reproduced energy of urban mass transit being used, the most part of which are consumed by resistance directly in China. In this paper, a new kind of inverter system is introduced in combination with a practical project. This new technology can reduce the power consumption and save a great amount of energy, it＇ s also good to improve the operation environment of train, be cause it can transact the reproduced energy through capacitor energy storage and inverter feedback. The system also makes use of an advanced power electronic conversion technology based on the control theory and computer technology. The implementation program of the system has completely the independent intellectual property rights as the authors stress. The weight and size of the equipment for the system is competitive compared with the complete energy storage, therefore the new system will create considerable social and economic benefits.