摘要
采用阻抗模型分析了蓄电池储能变流级联系统,前级PWM整流器用受控电压源和输出电阻组成的戴维南等效电路等效,双向DC/DC变换器用受控电流源和输入导纳组成的诺顿等效电路等效。基于阻抗模型对级联系统的交互作用进行分析。通过构建级联系统的控制结构框图,计算出阻抗模型中的具体参数并分析其Bode图。最后通过仿真验证基于阻抗模型对级联系统谐波特性的理论分析。
The impedance model is used to analyze the battery energy storage converter cascade system.The front-end PWM rectifier is equivalent to the Thevenin circuit composed of the controlled voltage source and the output resistor,and the bidirectional DC/DC converter is equivalent to the Norton circuit composed of the controlled current source and input admittance.The interaction of the cascade system is analyzed based on the impedance model.By constructing a block diagram of the control structure of the cascade system,the specific parameters in the impedance model are calculated and the Bode diagram is analyzed.Finally,the theoretical analysis of the harmonic characteristics of the cascade system based on the impedance model is verified by simulation.
作者
丁超
潘超
黄海宏
DING Chao;PAN Chao;HUANG Haihong(School of Electrical Engineering and Automation,Hefei University of Technology,Hefei 230009,China;State Grid Hefei Power Supply Company,Hefei 230061,China)
出处
《电器与能效管理技术》
2019年第23期21-26,33,共7页
Electrical & Energy Management Technology
