The invention discloses a control method, apparatus and system for a high-capacity integrated type virtual synchronous machine. The control system for the high-capacity integrated type virtual synchronous machine comprises n groups of energy storage battery backs, n paths of DC/DC circuits, and n paths of DC/AC circuits, wherein each energy storage battery pack is connected with the corresponding DC/DC circuits and DC/AC circuits in sequence; the direct current sides of the DC/AC circuits are connected with a direct current bus in parallel; the alternating current sides of the DC/AC circuits are connected with a transformer in parallel; and the alternating current sides of the DC/AC circuits are connected with n paths of filtering loops. By virtue of the process, the problem of relatively high difficulty in SOC balance control of the high-capacity energy battery is solved.