Integrating the digital time control algorithm with DC-bus “notching” circuit based soft-switched inverter

Author

Baker, D.M. ; Agelidis, V.G. ; Meng, C.W. ; Nayar, C.V.

Author_Institution

CRESTA, Curtin Univ. of Technol., Perth, WA, Australia

Volume

146

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

524

Lastpage

529

Abstract

A single-phase full-bridge bi-level inverter using a DC-link quasi-resonant circuit (QRC) to introduce a zero-volts interval across the DC bus for soft switching is discussed. It is demonstrated that the digital time control (DTC) algorithm, a method that belongs to the family of zero average current error (ZACE) methods, is a suitable technique to be integrated with a typical QRC DC-link soft-switched inverter. Experimental results taken from a low power single-phase current-controlled inverter prototype are documented. These include quasi-resonant circuit waveforms, inverter waveforms and electromagnetic interference (EMI) spectral characteristics

Keywords

DC-AC power convertors; bridge circuits; digital control; electric current control; electromagnetic interference; invertors; resonant power convertors; switching circuits; DC-bus notching circuit; DC-link quasi-resonant circuit; EMI spectral characteristics; digital time control algorithm; electromagnetic interference; inverter waveforms; quasi-resonant circuit waveforms; single-phase full-bridge bi-level inverter; soft-switched inverter; zero average current error methods; zero voltage switching;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings -

Publisher

iet

ISSN

1350-2352

Type

jour

DOI

10.1049/ip-epa:19990480

Filename

810254