FIELD: measurement; testing.
SUBSTANCE: invention relates to the detection of a short-circuited diode in a bridge rectifier. Method comprises determining a phase-to-phase voltage (Vab, Vbc, Vca) between two phase inputs (20) of bridge rectifier (16), wherein phase input (20) is provided between two series connected diodes (26) of the respective phase, and indicating a shorted diode fault by determining whether the phase-to-phase voltage is zero for more than commutation time (36) of bridge rectifier (16).
EFFECT: technical result: enabling quick, reliable and easy detection of faulty diode.
15 cl, 4 dwg
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