With the high proportion of new energy and power electronic devices connected to the grid

the new type of power system is facing such challenges as lack of inertia and weak stability. The traditional grid-following control relies on the grid connection mode of grid voltage support

resulting in insufficient system frequency/voltage regulation capacity

and leading to a number of stability accidents. However

the grid-forming control makes the converter possess the ability of constructing voltage /frequency independently by simulating the characteristics of synchronous machine

which significantly improves both system inertia response and damping characteristics. Based on this

firstly

the topology of the energy storage converter is briefly introduced and its potential application in new energy grid-connection is explored. Then

the existing grid-following converter and grid-forming converter are compared

analyzed and analyzed

and the existing grid-forming control technology is introduced. Finally

the difficulties encountered by the grid-forming technology in case of application to the converter and the outlook of the future research are pointed out.