Fundamentals of a new diode clamping multilevel inverter

Author

Yuan, Xiaoming ; Barbi, Ivo

Author_Institution

Power Electron. & Electrometrol. Lab., Swiss Fed. Inst. of Technol., Zurich, Switzerland

Volume

15

Issue

4

fYear

2000

fDate

7/1/2000 12:00:00 AM

Firstpage

711

Lastpage

718

Abstract

The conventional diode clamping inverter suffers from such problems as DC link unbalance, indirect clamping of the inner devices, turn-on snubbing of the inner DC rails as well as series association of the clamping diodes etc. It is due largely to these problems that the application of the conventional diode clamping inverter in practice has been deterred, in spite of the growing discussion in the literature. The paper proposes a new diode clamping inverter, which works without the series association of the clamping diodes. An auxiliary resistive clamping network solving the indirect clamping problem of the inner devices is also discussed for both the new and conventional diode clamping inverter. Operation principle, clamping mechanism, auxiliary clamping as well as experimentation are presented

Keywords

invertors; power semiconductor diodes; snubbers; DC link unbalance; auxiliary resistive clamping network; clamping diodes; diode clamping multilevel inverter; inner DC rails turn-on snubbing; inner devices indirect clamping; operation principle; series association; Automatic voltage control; Broadcasting; Capacitors; Clamps; Diodes; Inverters; Power electronics; Rails; Switches; Topology;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.849041

Filename

849041