Estudo, modelagem e simulação de um inversor de comutação suave para aplicação em filtros ativos de potência monofásicos / A study, modeling and simulation of a soft-switched inverter for an AC single-phase active power filter

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

This work shows the study, the selection and the analysis of a soft-switched inverter for an ac single-phase active power filter. For this, various topologies of the soft-switched inverters are classified based upon the location of the auxiliary circuit and the topology that achieves the goals for application in the active power filter is selected. Three commutation processes are presented: zero voltage switching (ZVS), zero current switching (ZCS) and zero current and zero voltage switching (ZCZVS). The ZCT inverter with 2 auxiliaries switches is selected for the application in an ac single-phase active power filter: this topology reduces the turn-on losses and practically eliminates the turn-off losses of all IGBTs of the inverter. Some new guidelines to project the ZCT inverter with 2 auxiliaries switches are presented, achieving an accurate calculation of the maximum load current for operation in ZCT. The results of the simulation from Simulink/Matlab and SPICE prove some goals of the ZCT inverter: the ZCT inverter with 2 auxiliaries switches reduces the total losses when compared with the hard-commutation inverter and the dynamic performance of the ZCT inverter applied in an ac single-phase active power filter is showed.

ASSUNTO(S)

active power filter soft-switched inverter zvs filtro ativo comutação suave zcs zczvs zvs zczvs zcs

ACESSO AO ARTIGO

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