MULTILEVEL HIGH-SPEED ADJUSTABLE DRIVE Russian patent published in 2020 - IPC H02P27/06 H02M1/12 H02M7/483 H02M7/497 

FIELD: electrical engineering.

SUBSTANCE: invention relates can be used in multilevel high-speed adjustable drive. Multilevel high-speed controlled drive has a plurality of modular multilevel three-phase inverter bridges, wherein the multilevel three-phase inverter bridges operate with the main frequency f, wherein the multilevel three-phase inverter bridges comprise at least three levels. Multi-level, three-phase inverter bridges operate in pulse-width modulation mode (PWM) from 9–21 x or operate in the main frequency mode (MFM). Inverter switching frequency is equal to the main frequency, wherein the multilevel three-phase inverters operate with the separated phase, so that one group is offset from the other by an angle of, θ = 60°/q, wherein phase shift of harmonic component of order n between groups, θn, is equal to nθ/q. High-speed multiphase motor is made with phases assembled in q three-phase groups and comprises electromagnetic means for locking selected groups of harmonics with transmission of components with main frequency f. Electromagnetic means comprises coils, through which current of electric motor is connected, connected by means of magnetic core; electromagnetic facility is located between multiple modular multilevel, three-phase inverter bridges and high-speed multiphase motor.

EFFECT: technical result is reduction of losses by elimination of 5th, 7th harmonic distortions of curved currents.

17 cl, 13 dwg