摘要
通过对Z源网络拓扑结构的直通和非直通两种状态工作过程的分析,设计出Z源网络拓扑结构的电感和电容参数,确定了并网电流和Z源网络拓扑结构电容电压闭环的双PI调节策略,建立系统的数学模型并进行了稳定性分析。利用MATLAB建立了系统的仿真模型,证明Z源逆变结构无需加入boost等变压电路便可以通过控制直通占空比来改变母线电压幅值,减小了开关损耗,提高了波形品质,应用范围更加广泛。
Based on the analysis of the working process of the Z-source network topology in the two states of direct and non direct,the inductance and capacitance parameters of the Z-source network topology are designed,the double PI regulation strategy of the grid connected current and the capacitance voltage closed-loop of the Z-source network topology is determined,the mathematical model of the system is established and the stability is analyzed.The simulation model of the system is established by MATLAB.It is proved that the Z-source inverter structure can change the voltage amplitude of the bus through controlling the duty cycle of the through circuit without adding boost and other voltage transformation circuits,reduce the switching loss,improve the waveform quality,and have a wider application range.
作者
陈峻峰
郎宝华
张宏鹏
Chen Junfeng;Lang Baohua;Zhang Hongpeng(School of Electronic Information Engineering,Xi'an Technological University,Xi'an 710021,China)
出处
《国外电子测量技术》
2020年第12期54-59,共6页
Foreign Electronic Measurement Technology
基金
陕西省重点研发计划(2019GY-074)项目资助。
关键词
Z源网络拓扑
并网
PI控制
Z-source network topology
grid connection
PI control
