This paper presents a short fault detection method of outer switches in the CSI stage for the Revere matrix converter (RMC). The
RMC is one of the AC/AC converters operating in the boost mode. In case a short fault occurs in the switches of the RMC, output
currents are distorted and powers transmitted to the load become unstable. The proposed fault detection method utilizes the
output current vector angle to detect the short fault and the faulty switch is determined without additional components. In this
paper, the current distortion phenomenon resulting from the short fault in the CSI stage of the RMC is analyzed. Furthermore, an
effectiveness of the proposed short fault detection method is verified by simulation results.