Actas de congresos
Polyphase drive systems configuration aiming EMI mitigation
Fecha
2014-03-26Autor
Sartori, Carlos Antonio França
Winnischofer, Godofredo
Institución
Resumen
Topologies of motor drive systems are studied,
aiming the reduction of common-mode (CM) currents. Initially,
the aspects concerning the CM currents circulation are analysed.
The reason of common-mode voltages generation, the circulating
paths for the resulting CM currents and their effects are
discussed. Then, a non-conventional drive system configuration
is proposed in order to reduce the CM currents and their effects.
This configuration comprehends a non-conventional inverter
module wired to a motor with an unusual connection. The cables
arrangement differs from the standard solution, too. The
proposed topology is compared with other ones, like the active
circuit for common-mode voltages compensation. The
contribution of the configuration to the reduction of CM voltages
and currents and their related interferences are evaluated, based
on numerical simulations. Some results are presented and
discussed regarding the suitability of the proposed configuration
as a potential solution to reduce the CM currents effects, when
the state of art and implementation cost of drives are taken into
account.