DEVICE FOR DETECTING TURN-TO-TURN SHORT CIRCUIT IN ELECTRICAL MACHINE WINDINGS Russian patent published in 2024 - IPC G01R31/34 G01R31/72 H02H7/08 

FIELD: electrical engineering; measurement.

SUBSTANCE: invention relates to electrical engineering and electrical measuring equipment and can be used in designing devices for monitoring the state of windings of an electrical machine of an AC electric drive during its operation. Device for detection of turn-to-turn short circuit in windings of electric machine contains artificially created symmetrical multiphase load connected by star. Single-phase full-wave voltage rectifier is connected between the common load point and the zero output of the electric machine, the direct current outputs of which are loaded on a circuit consisting of series-connected dinistor and relay coil. Capacitor and a stabilitron are connected in parallel to the coil. Device can be used in uncontrolled and controlled AC electric drives of various purposes and power structure with various types of electrical machines and converters.

EFFECT: implementation of a simple and reliable device for detection of interturn short-circuit in windings of an AC electric machine at an early stage of their development.

4 cl, 7 dwg