HIGHER-ORDER HARMONICS COMPENSATION DEVICE ADAPTED TO THE ALTERNATING CURRENT ELECTRIC MOTOR DRIVE Russian patent published in 2017 - IPC H02M1/12 

FIELD: electricity.

SUBSTANCE: direct-current voltage sensor is connected to the first and second charge plates in the higher-order harmonics compensation device adapted to the alternating current electric motor drive. The DC voltage sensor output is attached to the first capacitor voltage controller input, and the output of the capacitor setting device is attached to the second voltage controller input. The compensation device inverter output is attached to the smoothing inductor input through the AC pickup of the compensation device. The smoothing inductor output is attached to the network through the output passive filter. The output of the electric line voltage sensor is attached to the first phase transformation unit input the output of which is attached to the first input of the phase alignment unit the output of which is attached to the second phase transformation unit input. The capacitor voltage controller output is attached to the second output of the phase alignment unit, the output of the second phase transformation unit is attached to the first subtract unit input.

EFFECT: harmonic constituent decrease.

1 dwg