Banca de QUALIFICAÇÃO: WERBET LUIZ ALMEIDA DA SILVA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : WERBET LUIZ ALMEIDA DA SILVA
DATE: 14/11/2019
TIME: 15:00
LOCAL: Auditório do LAUT
TITLE:

Implementation of the Active Disturbance Rejection Control (ADRC) technique in the Radial Position Control of a Split-winding Bearingless Induction Machine.

KEY WORDS:

ADRC, induction machine, radial position control. 

PAGES: 50
BIG AREA: Engenharias
AREA: Engenharia Elétrica
SUBÁREA: Eletrônica Industrial, Sistemas e Controles Eletrônicos
SPECIALTY: Controle de Processos Eletrônicos, Retroalimentação
SUMMARY:

This work aims to realize the rotor radial position control of a three-phase bearingless induction machine, with split-winding and optimized drive structure, using the Active Disturbance Rejection Control (ADRC) technique.  The development of vector control techniques, along with microcontrollers and power electronics components have increased the use of induction motors and turned it the most used machine topology in the world nowadays. Researches point that mechanical bearings are main cause of faults in electrical machines. Aiming to reduce maintenance, noise and vibration, many researches have been realized to develop and optimize bearingless machines structures. This special kind of machine has an operation strongly dependent on closed-loop control systems. As a system with multi-variable, non-linear, time varying and with coupled variables, it demands advanced control strategies to an efficient operation with a good dynamic performance. The ADRC controller considers the total disturbance (composed by non-modeled dynamics, non-linearity, uncertainty and changes in load) as a new system state, to be estimated in real-time throughout an extended state observer. On this way, these disturbances can be compensated in real-time, eliminating regime errors and with a suitable response to general disturbances. This technique will be applied as a position controller and the results will be compared with previous works for system operation with and without load applied to the machine shaft.

BANKING MEMBERS:
Presidente - 1149567 - ANDRES ORTIZ SALAZAR
Interno - 350693 - ANDRÉ LAURINDO MAITELLI
Externo à Instituição - ELMER ROLANDO LLANOS VILLARREAL - UFERSA
Externo à Instituição - JOSE ALVARO DE PAIVA - IFRN