共高频交流母线的电能路由器直流端口控制策略  

DC Port Control Strategy for Electric Energy Router With High Frequency AC Link

作　　者：蔡伟谦 沈瑜[1] 李凯[2] 文武松[1] 聂金铜[1] 袁立强[1] 张春朋[1] 赵争鸣[1] CAI Weiqian;SHEN Yu;LI Kai;WEN Wusong;NIE Jintong;YUAN Liqiang;ZHANG Chunpeng;ZHAO Zhengming(Department of Electrical Engineering,Tsinghua University,Haidian District,Beijing 100084,China;School of Electrical Engineering,Beijing Jiaotong University,Haidian District,Beijing 100044,China)

机构地区：[1]清华大学电机工程与应用电子技术系,北京市海淀区100084 [2]北京交通大学电气工程学院,北京市海淀区100044

出　　处：《电网技术》2020年第12期4600-4607,共8页Power System Technology

基　　金：国家重点研发计划项目(2017YFB0903203)。

摘　　要：在电能路由器的开发中,共高频方波交流母线的拓扑得到越来越多的关注。相较于传统的共直流母线拓扑,共交流母线的模块化多有源桥拓扑在模块化设计的基础上,可以灵活实现不同电压与功率等级的端口扩展。对该拓扑的两部分电路(模块化多有源桥和电压平衡器),分别设计了对应控制策略以实现对直流端口的控制。给出了端口在恒功率、恒压2种运行模式下的稳态运行及模式切换的控制策略。针对双极性直流端口,给出了对应的电压平衡器的建模与控制策略。最后,通过仿真和实验样机对策略进行了验证。The development of electric energy routers contributes to more and more concerns about the topologies with high-frequency square-wave AC link. Compared with the traditional topologies with a DC bus, the modular multi-active bridge topology with an AC bus is able to flexibly achieve the expansion of the ports with various voltages and power levels through its modular designing. In this paper, the control strategies of the DC port of this topology is studied, including the voltage balancer and the modular multi-active bridge. Based on the modeling and analyzing of the circuit, the control strategies for the port under both constant power mode and constant voltage mode are given, and the mode transfer strategy is deduced. Aiming at the port with bipolar DC voltage, the corresponding voltage balancer modeling and control strategy are given. Finally, the strategy is verified by simulation and experimental prototypes.

关 键 词：模块化多有源桥 模式切换 电压平衡器 

分 类 号：TM721[电气工程—电力系统及自动化]