摘要
在直流微网中,针对双有源桥(dual active bridge, DAB)变换器及其相连的储能系统的功率流动问题提出了精确直接功率控制(accurate direct power control, ADPC)方法。该控制方法实现了DAB变换器两侧的恒定功率传输,具有精度高、动态响应快、稳定性好,克服了传统直接功率控制(direct power control, DPC)对于系统参数的依赖的局限性。最后基于MATLAB/Simulink仿真工具箱和实物实验平台进行验证,通过与传统功率PI控制方法进行对比,仿真和实验结果表明:在功率指令值突变、负载突变、输入电压波动的情况下,该ADPC方法能有效提高输出功率的动态性能,减小输入电压扰动对输出功率的影响,且对系统参数无依赖性,提高了控制方法的兼容性和可移植性。该方法在直流供电网络的电能调度控制领域有广泛的应用前景。
In the DC microgid,aimed at the power flow problem of dual active bridge(DAB)con-verters and their connected energy storage systems,this paper proposed an accurate direct power control(ADPC)method.The introduced control approach ensured constant power transmission on both sides of the DAB converter and was characterized by high accuracy,fast dynamic re-sponse,and excellent stability.It overcame the limitations of traditional direct power control(DPC)methods,which were highly dependent on system parameters.The effectiveness of the ADPC method was verified through simulations using MATLAB/Simulink and real-world experi-mental platforms.When compared to traditional power PI control methods,the proposed ADPC mtehod,according to simulation and experimental results,significantly improves the dynamic performance of output power,especially under conditions of abrupt changes in power setpoints,load shifts,and input voltage fluctuations.Moreover,the method is independent of system pa-rameters,enhancing the control method's compatibility and portability.The proposed method shows promising application prospects in the field of electric energy dispatch control within DC power supply networks.
作者
叶育林
于艇
刘晨
孙辉
肖钟秀
YE Yulin;YU Ting;LIU Chen;SUN Hui;XIAO Zhongxiu(China Nuclear Power Design Co.Ltd.,Shenzhen 518000,Guangdong,China;School of Electrical Engineering,Xi’an Jiaotong University,Xi’an 710048,China)
出处
《西安工程大学学报》
CAS
2023年第6期96-105,共10页
Journal of Xi’an Polytechnic University
基金
国家重点研发计划项目(2018YFB0905800)。
关键词
直流微网
储能系统
双有源桥变换器
直接功率控制
DC microgrid
energy storage system
dual active bridge converter
direct power control
