A way to achieve multilevel converter structure using two standard three-phase two-level inverters is presented in this paper. In order to obtain the typical multilevel voltage waveforms it is necessary to synchronize the commutations of the two inverters by a proper modulation strategy. Here, two modulation strategies areresented: the first one allows only generating the characteristic multilevel line-to-line voltages; the second one allows controlling the power flows from the two inverters too. Eventually, it is discussed some suitable applications or the system described in automotive and naval fields.
Double Inverter as a Multilevel Converter: Circuit Topology, Modulation Strategies and Applications
GRANDI, GABRIELE;ROSSI, CLAUDIO;LEGA, ALBERTO;CASADEI, DOMENICO
2005
Abstract
A way to achieve multilevel converter structure using two standard three-phase two-level inverters is presented in this paper. In order to obtain the typical multilevel voltage waveforms it is necessary to synchronize the commutations of the two inverters by a proper modulation strategy. Here, two modulation strategies areresented: the first one allows only generating the characteristic multilevel line-to-line voltages; the second one allows controlling the power flows from the two inverters too. Eventually, it is discussed some suitable applications or the system described in automotive and naval fields.File in questo prodotto:
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