Five-Level Diode-Clamped Inverter With Three-Level Boost Converter

Author

Abdullah, Rosmadi ; Rahim, Nasrudin Abd ; Sheikh Raihan, Siti Rohani ; Ahmad, Abu Zaharin

Author_Institution

Dept. of Electr. Eng., Univ. of Malaya, Kuala Lumpur, Malaysia

Volume

61

Issue

10

fYear

2014

fDate

Oct. 2014

Firstpage

5155

Lastpage

5163

Abstract

This paper proposes an active front-end solution to balance the dc-link capacitor voltage of the five-level diode-clamped inverter. Capacitor voltage balancing is performed by a three-level boost converter connected to the two inner capacitors of a five-level diode-clamped inverter and additional balancing circuits at the other two outer capacitors. The proposed configuration is tested through simulation and experiment for various load power factor conditions at a high modulation index. The result demonstrates the reliability of the proposed configuration to balance the dc-link capacitor voltage at the desired level.

Keywords

invertors; power capacitors; power factor; active front-end solution; balancing circuits; capacitor voltage balancing; dc-link capacitor voltage; five-level diode-clamped inverter; high modulation index; load power factor conditions; three-level boost converter; Capacitors; Choppers (circuits); Inductors; Inverters; Modulation; Reactive power; Voltage control; DC-link capacitor voltage balancing; diode-clamped; multilevel inverter; three-level boost converter (TLBC);

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/TIE.2013.2297315

Filename

6701341