摘要
为了研究高频隔离型准Z源逆变器的内在特性及Z源网络各器件对其动态性能的影响。对高频隔离型准Z源逆变器在电流连续模式下,采用状态空间平均法对该逆变器直流侧建模,再利用小信号扰动获得控制与输出的传递函数,为高频隔离型准Z源逆变器设计控制策略提供理论依据。由于传递函数存在右半平面零点,说明逆变器具有非最小相位输出的特性。利用控制与输出的传递函数研究高频隔离型准Z源无源组件对系统零极点的影响,进而研究对系统动态性能的影响。通过Saber软件进行仿真验证所建立模型的正确性和分析的合理性。
To study the effect of the inherent characteristics of high-frequency isolated quasi-Z source inverter and the Z-source network devices on the inverter’s dynamic performance, state space averaging method is used in a continuous current mode to model the inverter on its DC side. Afterwards, small signal perturbation is used to obtain the control and output transfer function, which provides a theoretical basis for the design and control strategy for the high- frequency isolated quasi-Z source inverter. The transfer function exists at the right-half-plane zero, indicating that the inverter has the characteristics of non-minimum phase output. The control and output transfer function is used to study the influence of the high-frequency isolated quasi-Z source passive components on the system’s zero-pole, and further study their influence on the system ’ s dynamic performance. The correctness of the established model and the rationality of the analysis are simulated and verified by software Saber.
出处
《电源学报》
CSCD
北大核心
2018年第1期52-60,共9页
Journal of Power Supply
基金
国家自然科学基金资助项目(51607020)
重庆市科委基础科学与前沿技术研究(一般)资助项目(cstc2016jcyj A0324)
重庆市教委科学技术研究资助项目(KJ1709209)
重庆理工大学研究生创新基金重点资助项目(YCX2016104)~~
关键词
准Z源逆变器
隔离型
小信号建模
SABER仿真
quasi-Z source inverter
isolation type
small signal modeling
Saber simulation
