摘要
对称Quasi-Z源逆变器很好地解决了传统Z源逆变器存在的电容电压应力高、启动冲击电流大等缺陷。分析了其工作原理,建立了基于对称的Quasi-Z源单相光伏并网发电系统,并提出了采用基于比例谐振(PR)调节器的单相并网逆变器的多环控制策略。在Matlab/Simulink环境中搭建系统仿真模型,对相关参数和控制策略的选取进行验证。仿真结果表明,基于比例谐振调节器的单相并网逆变器的多环控制策略不但能有效地实现并网逆变器的控制,而且能使系统保持稳定。
The symmetry of the Quasi- Z source inverter was proposed in recent years, the traditional Z source inverter capacitor voltage insufficient, such as stress high, the start impact current big and some other shortcomings,were solved. The work principle was simply analyzed. Symmetrical Quasi- Z source single-phase photovoltaic grid power generation system was built. Based on proportional resonant（PR） controller, multi-loop control strategy of single-phase grid inverter was put forward. Through the simulation, the correctness of the system structure and the feasibility of the control strategy were verified. The simulation results show that based on proportional resonant controller of single-phase grid inverter multi-loop control strategy, not only the grid inverter control can be effectively achieved, but also the system keep stable can be kept.
出处
《电源技术》
CAS
CSCD
北大核心
2015年第3期568-570,共3页
Chinese Journal of Power Sources
