DEVICE FOR MATCHED CONTROL OF ELECTRIC DRIVES WITH ELECTRONIC REDUCTION Russian patent published in 2019 - IPC H02P5/46 H02P5/74 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and can be used in electrical engineering. Device comprises two electric drives based on asynchronous motors with squirrel-cage rotors, a unit for setting reduction, an offset unit, two multipliers and a unit for calculating speed. Signal from the speed setting unit is transmitted to the first inputs of the adders. Output of the first adder is connected to the input of the first electric drive and to the input of the multiplier. Signal from the output of the first electric drive is transmitted to the input of the adder. Connection of the output of this adder with the second inputs of the initial adders creates positive and negative feedback, respectively. Signals from the output of the adder and the unit for setting reduction are transmitted to the inputs of the multiplier. From the output of the multiplier, the signal is transmitted to the input of the second electric drive, the output of which is connected to the input of the adder, which is connected to the other adder. Output of the setting unit of reduction is connected to the first input of the adder, the second input of which receives the signal of the displacement unit. Output of this adder is connected to the input of the multiplier. Output of the multiplier is connected to the input of the speed calculation unit, from the output of which the signal is transmitted to the second input of the adder.

EFFECT: technical result consists in coordinated rotation, controlled speed control and possibility of change in reduction ratio of electric drives based on asynchronous motors with squirrel-cage rotors.

1 cl, 5 dwg