基于功率反馈控制的四并联DC/DC变换器的研制  

Development of a Four-parallel DC/DC Converter Based on Power Feedback Control

作　　者：姜涛 刘子民 宫钰明 刘金晶 JIANG Tao;LIU Zi-min;GONG Yu-ming;LIU Jin-jing(CRRC Dalian R&D Co.,Ltd.,Dalian 116052,China)

机构地区：[1]中车大连电力牵引研发中心有限公司,辽宁大连116052

出　　处：《电力电子技术》2022年第3期126-129,共4页Power Electronics

摘　　要：设计了一种用于沈抚有轨电车的四并联双向DC/DC变换器系统。DC/DC变换器可以通过信号检测系统识别有无接触网来调整工作模式。在有接触网区,变换器为充电模式对超级电容进行充电;在无接触网区,变换器工作模式转换为放电模式释放超级电容储存的电能用于牵引系统和整车使用。在无输出电流传感器的情况下,采样电压反馈控制作为外环,功率反馈控制作为内环,对整个并联系统进行并联均流控制。最后通过仿真和实验验证了该方案的可行性。A four-parallel bidirectional DC/DC converter system for Shenfu tram is designed.DC/DC converter can adjust the working mode by identifying whether there is contact line through the signal detection system.In the area with contact line,the converter charges the super-capacitor in the charging mode;in the area without contact line,the working mode of the converter transforms into discharge mode to release the energy stored by the super-capacitor for the traction system and the whole vehicle.In the case of no output current sensor,the sampling voltage feedback control is used as the outer loop,and the power feedback control is used as the inner loop.The parallel current sharing control is carried out for the whole parallel system.Finally,the feasibility of the proposed scheme is verified by the simulation and experiment.

关 键 词：变换器 有轨电车 电压反馈控制 功率反馈控制 

分 类 号：TM46[电气工程—电器]