新型组合式Sepic逆变器双闭环控制研究

Research on double-loop control of a novel combined Sepic inverter

针对适用于太阳能并网发电系统的光伏并网逆变器,提出了一种电压电流双闭环控制策略,并据此建立了新型组合式Sepic逆变器的双闭环控制系统。利用Matlab/Simulink模仿工具建立了该控制系统的仿真模型,对该系统进行了稳态仿真和动态仿真,以验证此系统的可行性和有效性。仿真实验结果表明,这种新型组合式Sepic逆变器双闭环控制具有良好的动态和稳态性能。

For the photovohaic grid-connected inverters applicable to the solar photovohaic grid-connected power genera- tion, a voltage-current double-loop control strategy was proposed, and based on it, a system for double-loop control of combined Sepic inverters was designed. A simulation model of the system was constructed by using the Matlab/ Simulink to conduce the system＇s steady-state simulation and dynamic simulation to verify its feasibility and effec- tiveness. The simulation results show the system＇ s good dynamic performance and steady performance.