INDUCTION MOTOR SPEED CONTROLLER Russian patent published in 2022 - IPC H02P27/18 H02P23/08 H02P1/26 B60L15/20 

FIELD: electrical engineering.

SUBSTANCE: speed controller of an induction motor belongs to the field of electrical engineering and can be used in an electric drive to control the speed of rotation of induction motors with both a squirrel-cage rotor and a phase rotor. The effect is achieved due to the fact that the proposed regulator contains a current transformer (2), the fifth (3) and sixth (4) resistors, the sixth optocoupler (5), the wireless communication module (6), the decrease (7) and increase (8) buttons ) speed, as well as "Start" (9) and "Stop" (10), fourth (11) and third (12) resistors, fifth optocoupler (13), second (14) and first (15) resistors, switch ( 16), the first (18) and second (19) anti-parallel thyristors, which are introduced into the first phase; third (22) and fourth (23) anti-parallel thyristors, which are introduced into the second phase; the first (17), second (20), third (21) and fourth (24) optocouplers, as well as the microcontroller (25). In addition, the proposed regulator has a soft start function for the electric motor, which has a positive effect on the performance of both the electric motor itself and the mechanism connected to it.

EFFECT: improvement of the weight and size indicators of the device due to the fact that all elements are placed in one housing, into which one cable is inserted from the network and from which another cable exits to the electric motor, which does not require the use of a sensor, the elements of which should be located in close proximity to the controlled induction motor.

1 cl, 1 dwg