Search International and National Patent Collections

1. (WO2018104417) METHOD FOR CONTROLLING THE SPEED OF A MOTOR

Pub. No.:    WO/2018/104417    International Application No.:    PCT/EP2017/081762
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Thu Dec 07 00:59:59 CET 2017
IPC: H02P 1/30
H02P 3/18
H02P 23/20
H02P 1/32
Applicants: MOTEURS LEROY-SOMER
Inventors: COUPART, Eric
ANDRIEUX, Christian
MCCLELLAND, Michael
Title: METHOD FOR CONTROLLING THE SPEED OF A MOTOR
Abstract:
Method for controlling the speed of rotation of an electric motor (M), notably an asynchronous electric motor, by means of a variable speed drive (10) supplied with power by a mains electrical power supply (L1, L2, L3), in which method in a variable speed mode of operation the motor is supplied with power by the variable speed drive (10) and in a fixed speed mode of operation the motor is supplied with power directly by the mains supply, and in which method before the changeover from the supply of power by the variable speed drive to the direct supply of power by the mains supply, the motor is first accelerated by the variable speed drive, the variable speed drive operating beyond its nominal current during the acceleration preceding the changeover.