DC-LINK CONTROL FOR A FIVE-LEVEL DIODE-CLAMPED INVERTER WITH REDUCED NUMBER OF COMPONENTS

  • ABINADABE S. ANDRADE
  • DIEGO A. ACEVEDO-BUENO University Federal of Campina Grande, Campina Grande - PB, Brazil
  • EDISON R. C. DA SILVA University Federal of Paraiba, Joo Pessoa - PB, Brazil
Keywords: DC-Link voltage balancing circuit, Five-Level NPC Inverter, Coupled Inductors

Abstract

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 has a reduced number of components for mitigation of losses. The DC-Link capacitor voltage is regulated by adjusting the switching duty cycles of DC/DC converter. Simulation results are presented to verify the validity of this method.

Published
2020-10-29
Section
Articles