MULTIFUNCTIONAL CURRENT SENSOR Russian patent published in 2015 - IPC G01R29/16 

FIELD: instrumentation.

SUBSTANCE: device comprises for each phase (A, B, C) its current converter, primary circuits of which generate a rotary magnetic field, and six rectifiers. Secondary windings are divided into twelve groups representing pairs of three-phase systems turned by 30° relative to each other. To outputs of the first, second and third groups (A_n, B_n, C_n), used for generation of signals proportionate to controlled phase currents, inputs of the first, second and third rectifiers are connected, accordingly. To the output of the combined fourth, fifth and sixth groups (A_n.1, B_n.1, C_n.1), used for generation of a signal proportionate to positive-sequence current, the input of the fourth rectifier is connected. To the output of the combined seventh, eighth and ninth groups (A_n.2, B_n.2, C_n.2), used for generation of a signal proportionate to negative-sequence current, the input of the fifth rectifier is connected. To the output of the combined tenth, eleventh and twelfth groups (A_n.0, B_n.0, C_n.0), used for generation of a signal proportionate to zero-sequence current, the input of the sixth rectifier is connected.

EFFECT: expanded arsenal of facilities for analysis of three-phase currents.

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