矿井电机车照明电源控制性能研究

Research on Control Performance of Floodlight Source on Mining Locomotive

基于矿井电机车照明电源,介绍了Buck三电平结构的两电平工作模式,并采用开关平均模型法建立了小信号控制模型。为有效抑制电源启动时的冲击电流和电压超调,采用电压环和电流变化率环作为反馈控制。根据实际需要建立了光耦、TL431及电流变化率环传递函数,并在此基础上对系统进行了仿真及实验,为工程设计提供参考。

Based on floodlight source of mining locomotive, two level mode on three level Buck topology is presented and a small signal modeling is built by using switch average model method.In order to inhibit shock current and voltage overshoot in the starting effectually,two closed control loops are is built within system,as voltage loop and current change rate loop are used to realize feedback control.According to actual need,the function of photo-couplers TL431 and current change rate loop are presented.The simulation analysis and experiment are done,which is reference for project design.