Novel multilevel inverter carrier-based PWM methods

Author

Tolbert, Leon M. ; Habetler, Thomas G.

Author_Institution

Oak Ridge Nat. Lab., TN, USA

Volume

2

fYear

1998

fDate

12-15 Oct. 1998

Firstpage

1424

Abstract

The advent of the transformerless multilevel inverter topology has brought forth various pulse width modulation (PWM) schemes as a means to control the switching of the active devices in each of the multiple voltage levels in the inverter. An analysis of how existing multilevel carrier-based PWM affect switch utilization for the different levels of a diode-clamped inverter is conducted. Two novel carrier-based multilevel PWM schemes are presented which help to optimize or balance the switch utilization in multilevel inverters. A 10 kW prototype six-level diode-clamped inverter has been built and controlled with the novel PWM strategies proposed in this paper to act as a voltage source inverter.

Keywords

PWM invertors; diodes; switching circuits; 10 kW; active devices switching control; carrier-based multilevel PWM schemes; diode-clamped inverter; multilevel inverter carrier-based PWM methods; multiple voltage levels; pulse width modulation schemes; six-level diode-clamped inverter; switch utilization; transformerless multilevel inverter topology; voltage source inverter; Diodes; Frequency; Pulse inverters; Pulse transformers; Pulse width modulation; Pulse width modulation inverters; Space vector pulse width modulation; Switches; US Government; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 1998. Thirty-Third IAS Annual Meeting. The 1998 IEEE

Conference_Location

St. Louis, MO, USA

ISSN

0197-2618

Print_ISBN

0-7803-4943-1

Type

conf

DOI

10.1109/IAS.1998.730329

Filename

730329