SILVA, O. I.; http://lattes.cnpq.br/5772149702060822; SILVA, Osglay Izídio da.
Resumo:
The drive systems with reduced number of electrical machine, become more and more important
in the universe that forms industrial electronics and electrical machine drive due to factors
related with cost and size of the system. In some cases one can reduce loss also.
These drive systems with reduced number of power switches devices are well known in the
literature and introduce some advantages in specific applications, example when there exists
need of size decreasing of the drive system or when demand for cost reduction.
In industrial applications where it is required to drive multiple electrical motors, the direct
solution consists in replicating such standard configuration. One of the first alternatives for reducing costs in this case is to use a common dc-bus for all motor drive systems installed in the shop-floor. A second alternative to further reduce the installation costs is to use converter
topologies with a minimized number of power switches, however, this method (technique) lead to constraints related with voltage capability converter and total harmonic distortion (THD). The decreasing in the number of switches can become indispensable, especially in applications with multiple machines because exists a direct relation between the increasing the amount of machines and the need increase the number of power switches to drive them.To discuss each point previously mentioned, this work addresses reduced number of power
switches. The mentioned reduction will result economy. In this way this work presents different topologies for drive systems machine with reduced number of power switches devices.