A novel PWM scheme for a three-level voltage source inverter with GTO thyristors

Author

Lee, Yo-Wan ; Suh, Bum-Seok ; Hyun, Dong-seok

Author_Institution

Dept. of Electr. Eng., Hanyang Univ., Seoul, South Korea

Volume

32

Issue

2

fYear

1996

Firstpage

260

Lastpage

268

Abstract

This paper presents a new PWM method for the three-level GTO inverters based on the space voltage vectors. With the proposed PWM method, we can minimize the harmonic components of the output voltage by avoiding the minimum pulse width limitation problem of the GTO thyristors and keeping the voltage balancing of the DC-link capacitors. The principle of the proposed PWM method and the voltage vector output sequences are described in detail. Computer simulation and experimental results verify that the proposed PWM method is suitable for high voltage and large capacity three-level GTO inverters applied to induction motor drives

Keywords

PWM invertors; induction motor drives; power system harmonics; thyristor convertors; DC-link capacitors; GTO thyristors; PWM method; computer simulation; harmonic components minimisation; induction motor drives; space voltage vectors; three-level voltage source inverter; voltage balancing; voltage vector output sequences; Capacitors; Circuits; Diodes; Pulse width modulation; Pulse width modulation inverters; Region 1; Snubbers; Space vector pulse width modulation; Thyristors; Zero voltage switching;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/28.491473

Filename

491473