中文摘要：

电力电子等设备带来的电网电感对LCL滤波器阻尼策略的影响不可忽视。为解决该问题,提出基于电容电流双反馈LCL滤波器有源阻尼控制策略。该策略在原有电容电流比例反馈控制的基础上,考虑电网电感的影响,改进了电容电流的反馈系数,在不改变LCL滤波器基本结构的前提下,可改善电网电感对LCL滤波器阻尼的影响。将该控制策略应用于光伏并网控制仿真系统中,理论分析及仿真结果都表明,所提出的控制策略可以保证系统稳定运行,对电网电感也有较好的抑制能力。

英文摘要：

Power electronics and other equipment to bring the power grid inductance on the LCL filter damping strategy can not be ignored. In order to solve this problem, an active damping control strategy based on double-feedback LCL filter with capacitive current is proposed. The strategy on the basis of the original proportion of capacitive current feedback control, considering the influence of the grid inductance, improve the feedback coefficient of capacitive current, and improve the effect of grid inductance on damping of LCL filter, without changing the basic structure of LCL filter. Finally, the control strategy is applied to the PV grid-connected control simulation system. Theoretical analysis and simulation results show that the proposed control strategy can ensure the stable operation of the system, the grid inductance also has a better ability to suppress.