CORRÊA, M. B. R.; http://lattes.cnpq.br/0041843905239864; CORRÊA, Maurício Beltrão de Rossiter.
Resumo:
Over the years, power electronics has introduced large advances in induction motor
drive systems. One of these advances is the improvement of the electromechanical
conversion process.
This Ph.D Dissertation covers the analysis and development of alternative topologies,
reduced component count or fault tolerance capability, taking into account the use
of variable speed drives for induction motors. Besides the reduced component topologies,
this work proposes a MOSPET-based multilevel inverter as a cost effective low
power system.
The system's characteristics are given taking into account the control technique of
the inverter and the type of induction motor. The motor type is considered due to
the possibility of operating a two winding motor, derived from a regular three-phase
machine, operating with an open-phase or a two-phase motor. The latter includes
the option for a two-winding single-phase motor with two-phase operational mode
capability.
A detailed analysis for each system will be presented taking into account the asymmetrical
aspects introduced by either the component reduction or the motor type.