Low damping resonant suppression and rapid power adjustment method of LCL inverter

The invention discloses a low damping resonant suppression and rapid power adjustment method of an LCL inverter. The low damping resonant suppression and rapid power adjustment method mainly comprises robust grid-current-feedback active damping control, synchronous reference frame quasi-proportional-integral control and power feedforward control, wherein by a robust grid-current-feedback active damping controller, the low damping characteristic of the system can be overcome, the LCL resonant peak is suppressed, and the robustness of the system on impedance change of a power grid is improved; by the synchronous reference frame quasi-proportional-integral control, the reactive power can be compensated, the instant current of the power grid is adjusted to be free from the influence of frequency deflection of the power grid and is maintained with a zero-steady error all the time; and by the power feedforward control, the single-way transfer process of photovoltaic DC-side energy to power grid AC-side energy can b