Banca de DEFESA: FRANCISCO ELVIS CARVALHO SOUZA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : FRANCISCO ELVIS CARVALHO SOUZA
DATA : 21/06/2018
HORA: 09:00
LOCAL: Auditorio do LAMP
TÍTULO:

Optimization of the Drive Structure for the Radial Position Control of a Three-Phase Bearingless Divided Winding Induction Motor 

PALAVRAS-CHAVES:

 Self-Bearing, Induction Motor, Split Winding

PÁGINAS: 200
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Elétrica
SUBÁREA: Eletrônica Industrial, Sistemas e Controles Eletrônicos
ESPECIALIDADE: Automação Eletrônica de Processos Elétricos e Industriais
RESUMO:

In bearingless motors or self-bearing motors, the motor and bearing functions are combined, that is to say, in the stator of the machine circulate currents that produce on the rotor besides the torque, also radial forces that support the rotor in the center of the stator. Thus, these machines do not suffer from the common wear of mechanical bearings, do not require lubrication, operate without noise and are suitable for applications with high rotational speed. In spite of all the advantages of the self-bearing motors, their operation requires a drive structure equipped with many components such as: electronic power switches, sensors, electronic interfaces and digital signal processors that make their application more expensive. The purpose of this work is to optimize (decrease) the number of components necessary for the operation of the self-bearing motors, both for the control of the radial position of the rotor and for its drive, to achieve this the following strategy was devised: instead of controlling the currents of the three phases, which requires the control of six currents, the currents of only two are controlled, the current of the third phase being produced by the sum of these. With this, the control structure would only use 4 electronic switches (IGBT), 4 drives (electronic interface for IGBTs), 4 current sensors and 4 current controllers, instead of 6 of these devices and 6 required current controllers for control with the three phases. This strategy was implemented in a prototype of 250-watt induction self-bearing motors that works in the upright position. The experimental tests showed results similar to results obtained with three-phase control techniques. 

MEMBROS DA BANCA:
Presidente - 1149567 - ANDRES ORTIZ SALAZAR
Interno - 1451883 - FABIO MENEGHETTI UGULINO DE ARAUJO
Externo ao Programa - 1569480 - JOSSANA MARIA DE SOUZA FERREIRA
Externo à Instituição - JOSE ALVARO DE PAIVA - IFRN
Externo à Instituição - JOSE ANDRES SANTISTEBAN LARREA - UFF