DC-LINK CONTROL FOR A FIVE-LEVEL DIODE-CLAMPED INVERTER WITH REDUCED NUMBER OF COMPONENTS
Abinadabe Silva Andrade1; Diego A. Acevedo-Bueno2; Edison R. C. da Silva3
1 Institute Federal of Paraiba, Cajazeiras - PB, Brazil; 2 University Federal of Campina Grande, Campina Grande - PB, Brazil; 3 University Federal of Paraiba, Joo Pessoa - PB, Brazil
Baixar PDF doi:10.20906/CPS/CBA2018-1186
Resumo
This paper presents a capacitor voltage balancing method for the five-level diode-clamped inverter using level-shifted pulse-width modulation (LS-PWM), including the voltage balancing of DC-link capacitors. The proposed system have a reduced number of components for mitigation of losses. The DC-Link capacitor voltage are regulated by adjusting the switching duty cycles of DC/DC converter. Simulation results are presented to verify the validity of this method.
Palavras-chave: DC-Link voltage balancing circuit; FiveLevel NPC Inverter; Coupled Inductors