The invention aims to disclose a photovoltaic grid-connected
inverter for active energy decoupling, which comprises a first
flyback converter, a second
flyback converter, a
voltage regulating converter, an output filter circuit and an
inverter circuit. The decoupling of the output power of the photovoltaic grid-connected
inverter and the output power of a solar photovoltaic array is realized, pulsation of the output power of the solar photovoltaic array is greatly reduced, the fluctuation loss caused by
maximum power point tracking (MPPT) is reduced, and the conversion efficiency of the photovoltaic array is improved; only a non-
electrolyte capacitor with small capacity and high reliability is adopted, the defects that the service life of the photovoltaic grid-connected inverter is shortened and the reliability is reduced caused by adopting an
electrolytic capacitor are overcome, the service life and the reliability of the photovoltaic grid-connected inverter are improved; and the peak power of a
transformer in the
flyback converter is reduced, the volume of the
transformer is reduced, the loss is effectively reduced, and the conversion efficiency is improved, so that the aim of the invention is realized.