中文摘要：

LCL型滤波器相对于L型滤波器对交流侧电流中的高频谐波有更强的抑制能力,因此也越来越多地被用于逆变器中。研究了在独立工作模式和并网逆变模式间的切换过程中如何做到无扰动切换。在独立和并网逆变两种模式下分别对空载电压和并网电流直接控制。在对比传统电压电流控制情况下,对电压电流控制进行改进。通过MATLAB/Simulink仿真平台,建立了LCL型滤波的逆变器并网模型,仿真分析证明了可行性。

英文摘要：

LCL type filter has better filter with respect to high-frequency harmonics in the AC current in the inhibition ability,so it is more and more used in the inverter. The switching process in independent mode and grid connected inverter mode between the switch without disturbance was researched. So in the inverter and grid independence under the two modes respectively. On load voltage and grid current direct control. In contrast to the traditional control of voltage and current conditions,the voltage and current control was improved. Through the simulation platform of MATLAB/Simulink,a model of grid connected inverter type LCL filter,simulation analysis proved the feasibility.