用于LCL型并网逆变器的电容电流比例积分正反馈有源阻尼技术以实现对电网阻抗变化的高鲁棒性

Capacitor-current-feedback active damping has been widely used in LCL-type grid-connected inverters. However, the damping performance is deteriorated due to the negative equivalent resistance resulted by the digital control delays, and thus the grid-connected inverter is apt to be unstable under the grid impedance variation. To address this issue, this paper proposes the capacitor-current proporti...