Control arrangement and method for regulating the output current of a dc source power converter connected to a multi-source dc system

A converter control arrangement (18) for regulating the output current of a dc source power converter (16) comprises a current regulator (20) for regulating the output current based on a comparison of an output current value (I out ) of the dc source power converter (16) with a desired target current value (I tgt ). When the output voltage value (V out ) of the dc source power converter (16) is within a normal operating voltage range defined by minimum and maximum voltage values (V min , V max ), the converter control arrangement (18) controls the target current value (I tgt ) so that it is equal to a desired reference current value (I ref ). When the output voltage value (V out ) is outside the normal operating voltage range, which typically indicates a fault condition, the converter control arrangement (18) modulates the reference current value (I ref ) to provide a target current value (I tgt ) that is less than the reference current value (I ref ).