Photovoltaic power generation system virtual synchronous machine control method, control device, converter and system

The invention discloses a photovoltaic power generation system virtual synchronous machine control method, control device, converter and system. The direct current side, connected with a photovoltaicmodule, of a photovoltaic inverter is connected to energy storage equipment and an energy storage converter; the voltage and current of the photovoltaic module are collected, a maximum power point tracking algorithm is carried out, a direct current voltage target value is obtained, and the energy storage converter is controlled to operate in a constant output direct current voltage mode accordingto the direct current voltage target value; direct current power output by the photovoltaic module is multiplied by the conversion efficiency of the photovoltaic inverter, the SOC optimal regulation power components of the energy storage equipment are superposed as an active power command of the photovoltaic inverter, and the photovoltaic inverter is controlled to operate in a virtual synchronousmachine mode according to t