Analysis of random PWM switching methods for 3-level power inverters

Author

Shrivastava, Yash ; Hui, S.Y.R.

Author_Institution

Dept. of Electr. Eng., Sydney Univ., NSW, Australia

Volume

2

fYear

1998

fDate

17-22 May 1998

Firstpage

1381

Abstract

This paper presents a generalised theory which covers both two-level and three-level random PWM (RPWM) schemes. Various three-level RPWM schemes with low switching frequency are presented and compared with two-level schemes. Three-level RPWM schemes have less discrete harmonics and continuous noise than two-level RPWM schemes. They have desirable spectral characteristics and can be employed in high-voltage inverter-fed motor drives. Measurements have confirmed the theory and the attractive features of three-level RPWM schemes

Keywords

DC-AC power convertors; PWM invertors; harmonic distortion; power system harmonics; switching circuits; continuous noise; discrete harmonics; generalised theory; measurements; motor drive applications; random PWM switching methods; spectral characteristics; switching frequency; three-level power inverters; Distribution functions; Pulse width modulation; Pulse width modulation inverters; Random number generation; Random processes; Signal analysis; Signal design; Signal generators; Signal processing; Signal sampling;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE

Conference_Location

Fukuoka

ISSN

0275-9306

Print_ISBN

0-7803-4489-8

Type

conf

DOI

10.1109/PESC.1998.703216

Filename

703216