DEVICE FOR CONDITION DIAGNOSIS OF ASYNCHRONOUS ELECTRIC MOTOR Russian patent published in 2022 - IPC G01R31/34 

FIELD: diagnostic tools.

SUBSTANCE: invention relates to diagnostic tools for electrical machines, namely the diagnosis of an asynchronous electric motor, and can be used to monitor the state of its short-circuited winding. A device for diagnosing the state of an asynchronous electric motor contains three stator phase current sensors connected to the phases of the motor power supply. The outputs of the current sensors are connected to the calculating unit of the resulting current module (CURCM). A transient detuning unit and a delay generation unit are connected to the CURCM, which are connected to a regression analysis unit (RAU). A state vector memory unit, a unit for determining the geometric difference of vectors of a known good and investigated state of an asynchronous motor, a unit for extracting a state vector module, a unit for extracting a diagnostic feature and a personal computer are connected in series to the RAU. The state vector memory unit is connected to the state vector unit allocating unit.

EFFECT: expanding the arsenal of technical means for diagnosing the state of an asynchronous electric motor.

1 cl, 6 dwg