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1. (WO2018119539) INDIRECT METHOD FOR CONSTANT SLIP CONTROL OF ASYNCHRONOUS ELECTRIC MOTORS

Pub. No.:    WO/2018/119539    International Application No.:    PCT/CL2017/050088
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Thu Dec 28 00:59:59 CET 2017
IPC: H02P 21/00
Applicants: UNIVERSIDAD DE SANTIAGO DE CHILE
Inventors: TRAVIESO TORRES, Juan Carlos
Title: INDIRECT METHOD FOR CONSTANT SLIP CONTROL OF ASYNCHRONOUS ELECTRIC MOTORS
Abstract:
The present invention relates to a constant slip control (CSC) method for variable-speed drives of asynchronous electric motors that deliver high control efficiency, which succeeds at delivering the load torque with lower stator current consumption than existing Field Oriented Control (FOC) and Direct Torque Control (DTC) methods, by energising the motor with an electric frequency that contemplates a constant slip equal to the inverse of the electrical time constant of the rotor, and by modifying the interface between the output of the speed controller (torque demand) and the reference of the current controller.