一种新型并网三相准Z源逆变器控制系统  

A Novel Control System of Grid-connected Three-phase Quasi-Z Source Inverter

作　　者：侯满哲 葛泰 王强[1] 茹慧英 孙冰心[1] 庞永俊[1] HOU Man-zhe;GE Tai;WANG Qiang;RU Hui-ying;SUN Bing-xin;PANG Yong-jun(Hebei Institute of Architecture and Civil Engineering,Zhangjiakou,Hebei 07500)

机构地区：[1]河北建筑工程学院,河北张家口075000

出　　处：《河北建筑工程学院学报》2018年第3期100-104,共5页Journal of Hebei Institute of Architecture and Civil Engineering

摘　　要：提出了一种具有快速性和鲁棒性的控制系统,该系统将三相准Z源逆变器连接到电网中,逆变器的拓扑结构是将两个准Z源网络与一个T型逆变器相结合,从而可以获得具有多层特性和引用网络特征的交流电压.为了控制该系统,提出了一个用于交流电的闭环电流控制器.该控制器在直通状态相关联的矢量调节器基础之上,通过调整直通占空比,使直流母线电压始终维持在参考值.该控制器的特点是快速瞬态响应和对参数以及负载变化的鲁棒性.最终,通过仿真试验,验证了控制器和控制系统的有效性.A control system with rapidity and robustness is proposed.The system connects a three-phase quasi-Z source inverter to the grid.The topology of the inverter is to connect two quasi-Z source networks with one T.The combination of inverters allows AC voltages with multilayer characteristics and reference network characteristics to be obtained.In order to control the system,a closed loop current controller for alternating current is proposed.The controller adjusts the through-duty ratio to maintain the DC bus voltage at the reference value based on the vector regulator associated with the pass-through state.The controller features fast transient response and robustness to parameters and load changes.Finally,the effectiveness of the controller and control system was verified by simulation experiments.

关 键 词：T型转换器 准Z源逆变器 电流控制器 直通状态 

分 类 号：U461.4[机械工程—车辆工程]