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Traditional fault diagnosis methods for converter open-circuit faults may present poor anti-interference performance, low detection speed and high misdiagnose rate especially during the motor acceleration. In order to solve the above problem, a new converter single open-circuit faults diagnosis method is proposed in this paper. Firstly, though conducting differential operation for the current variables, the common mode interference can be removed. Based on the differential information,doi:10.1088/1742-6596/1303/1/012114 fatcat:ixm42rxpn5d27a3poffg2lwmyy