CONTROLLER FOR ELECTRIC MOTOR Russian patent published in 2019 - IPC H02P6/08 

FIELD: electrical engineering.

SUBSTANCE: disclosed is a controller which is coupled with a frequency-controlled electric drive and an electric motor, wherein the controller has (a) one or more voltage and current sensors, which are connected to a power line connecting the frequency-controlled electric drive and the electric motor; and (b) a signal interface module which can receive electric signals associated with the state of operation of the electric motor from one or more voltage and current sensors. Signal interface module can match the received electric signals with the position of the electric motor rotor and transmit signals corresponding to the rotor position to the frequency-controlled electric drive. Data provided by the controller, if transmitted as a rotor position, can cause the frequency-controlled electric drive to vary one or more of its operating parameters in order to maintain proper synchronization of the rotor and associated stator currents. Alternatively, the controller can directly adjust the operating parameters of the frequency-controlled electric drive.

EFFECT: invention relates to the field of electrical engineering and concerns improved control of an electric motor connected during operation with a frequency-regulated electric drive.

26 cl, 8 dwg