A new AC/DC converter with three-bus output and controllable DC link short-circuit current

Abstract In the AC/DC hybrid microgrid, single-phase AC/DC converters play a vital role in maintaining the energy balance of the AC grid and DC grid. The industry usually uses large electrolytic capacitors to absorb the secondary ripple power. However, it produces a larger short-circuit current. This paper proposes a three-bus output AC/DC converter that can limit the short-circuit current. The feasibility of steady-state operation and the ability of transient processes to limit short-circuit current was verified.