The invention discloses a control method, apparatus and system for a high-capacity energy-storage virtual synchronous machine. The control system for the high-capacity energy-storage virtual synchronous machine comprises n groups of energy-storage battery backs, n paths of DC/DC circuits, and a path of DC/AC circuit, wherein each energy-storage battery pack is connected with a direct current bus through the corresponding DC/DC circuit separately; the direct current bus is connected with the direct current side of the DC/AC circuit; and the alternating current side of the DC/AC circuit is connected with a transformer in parallel. By adoption of the process, the problem of high control complexity caused when the virtual synchronous machine is applied to an inverter can be solved.