Multi-megawatt drive with intercell transformers

Author

Dawande, S. ; Lentijo, K.

Author_Institution

GE Energy Power Conversion, Pittsburgh, PA, USA

fYear

2013

fDate

22-24 April 2013

Firstpage

216

Lastpage

219

Abstract

In order to provide excellent harmonic power quality equivalent to that of a synchronous generator, interleaved carriers and intercell transformers (ICTs) were included as part of an active-front end in a two-level, four-thread three-phase PWM drive to try to achieve 1% Total Harmonic Distortion (THD) and 0.3% Single Harmonic Distortion (SHD) for voltage up to 20 kHz on a high impedance grid. This highly compact drive rated up to 4 MW at 690 V with 2.5 kHz switching frequency is currently undergoing testing on a 480 V grid. The results of harmonic testing to date as well as a discussion of the role of the various inductance values associated with the design are included.

Keywords

electric drives; harmonic distortion; power grids; power supply quality; power system harmonics; power transformers; synchronous generators; ICT; SHD; THD; four-thread three-phase PWM drive; frequency 2.5 kHz; harmonic power quality; harmonic testing; high impedance grid; intercell transformer; interleaved carrier; multimegawatt drive; single harmonic distortion; synchronous generator; total harmonic distortion; voltage 480 V; voltage 690 V; Filtering; Harmonic analysis; Impedance; Inductance; Inductors; Power harmonic filters; Voltage measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Ship Technologies Symposium (ESTS), 2013 IEEE

Conference_Location

Arlington, VA

Print_ISBN

978-1-4673-5243-7

Type

conf

DOI

10.1109/ESTS.2013.6523737

Filename

6523737