基于描述函数法的LCL滤波单级式光伏发电系统弱电网并网功率振荡分析

For the LCL-Filtered single-stage photovoltaic (PV) generators, the low-frequency power oscillation (<;50 Hz) occurs frequently when they are connected to the weak grid, whose oscillation mechanism has been a hot topic recently. However, the existing stability analysis methods rarely take the complete model of the PV generators into consideration, thus the accuracy and completeness of the correspo...