直流电能路由器端口能量综合控制策略研究  

Synthetical Control Technology of DC Electric Energy Router Based on Port Energy Relationship

作　　者：杨新华[1,2] 曹磊 张晓英[1,2] YANG Xinhua;CAO Lei;ZHANG Xiaoying(College of Electrical Engineering and Information Engineering,Lanzhou University of Technology,Lanzhou 730050 China;Key Laboratory of Gansu Advanced Control for Industrial Processes,Lanzhou University of Technology,Lanzhou 730050 China)

机构地区：[1]兰州理工大学电气工程与信息工程学院,兰州730050 [2]甘肃省工业过程先进控制重点实验室,兰州730050

出　　处：《电气工程学报》2020年第2期41-46,共6页Journal of Electrical Engineering

基　　金：国家自然科学基金资助项目(51867015)。

摘　　要：针对直流配电网的电能路由器控制问题,通过端口能量综合控制方法提高内部直流母线响应速度,增强直流电能路由器稳态性能.基于一种双有源变换单元的四端口直流电能路由器,分析端口能量流动情况,建立针对端口的直流电能路由器的能量模型,依据端口能量关系,设计综合控制器,对各级单元之间能量进行综合控制,分析系统中无源器件的参数差异对综合控制的影响,设计直流电能路由器并网运行综合控制策略,提高直流母线电压稳定性.最后,在Matlab/Simulink平台对控制策略进行仿真验证,结果验证了综合控制策略的有效性,同时仿真结果表明提出的控制策略有利于减小低压母线电容值.Aiming at the control problem of the energy router of the DC power distribution network,the response speed of the internal DC bus is improved through the integrated control method of the port energy,so as to improve the transient performance of the DC power router.Based on a four-port DC power router with dual active bridge conversion units,the energy flow of the ports is analyzed,the port energy model of the power router is established,and an integrated controller is designed based on the port energy relationship to comprehensively control the energy between units at all levels,the influence of the parameter differences of the passive components in the system on the comprehensive control is analyzed,a comprehensive control strategy is designed for the grid-connected operation of the DC power router,and the stability of the DC bus voltage is improved.Finally,the control strategy is simulated based on Matlab/Simulink,and the simulation results verify the effectiveness of the integrated control strategy.At the same time,the simulation results show that the control strategy proposed is conducive to reduce the capacitance value of low-voltage bus.

关 键 词：直流电能路由器 端口能量 能量模型 端口能量控制 

分 类 号：TM642[电气工程—电力系统及自动化]