ASYNCHRONOUS MOTOR SPEED CONTROLLER Russian patent published in 2021 - IPC H02P1/26 H02P23/08 B60L15/20 H02P29/60 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering. The speed controller of an asynchronous motor (1) is structurally made of two blocks: a starter, to which a power cable is connected from the network, and a sensor located on an electric motor, powered by a starter. The sensor and the starter communicate with each other via a radio channel, for example, via WiFi and/or Bluetooth. For simplicity, the power supply circuits of the electronic components of the starter and sensor are not shown. The starter provides connection/disconnection of an asynchronous motor (1) to/from the mains and consists of: a switch (11), power thyristors (2), (4), (7) and (9), used for galvanic isolation of optocouplers (3) , (5), (6) and (8), the first microcontroller (12), the Start (13) and Stop (14) buttons, and the first wireless communication module (15). The sensor is located on the electric motor, using a thermistor (18) measures its temperature, and through an optocoupler with an open optical channel (19) - the rotor speed. It also includes a second microcontroller (16) and a second wireless communication module (17).

EFFECT: energy saving and increasing the motor resource of the mechanism by setting such a speed of rotation of the electric motor, which will ensure optimal loading of the driven mechanism.

1 cl, 1 dwg