CONTROL OF THE NUMBER OF ACTIVE POWER ELEMENTS OF THE SPEED CONTROLLER Russian patent published in 2021 - IPC H02P27/06 H02M5/458 

FIELD: electrical engineering.

SUBSTANCE: group of inventions relates to the control of alternating current motors. The method for controlling a speed controller powering an electric motor, wherein the speed controller contains a set of Ni low voltage power elements connected in series for at least one phase with index i, is as follows. After receiving the speed command, the number of Mi elements sufficient to power the motor with the target output voltage V is determined based on the speed command, and Mi power elements from Ni power elements are activated and Ni-Mi other power elements to power the motor are deactivated in accordance with the speed command. A computer program executed by a computing device and containing commands for implementing the steps of the speed controller control method, and a speed controller control device powering the electric motor are also claimed. Moreover, the control device contains an interface designed to receive the speed command and a computing device designed to determine the number of Mi elements.

EFFECT: optimizing the use of the power elements of the speed controller.

16 cl, 7 dwg