Elimination of low-frequency harmonics caused by PWM in a three-phase soft-switched boost rectifier

Author

Wu, Jia ; Lee, Fred C. ; Boroyevich, Dushan

Author_Institution

Center for Power Electron. Syst., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

Volume

4

fYear

2000

fDate

36800

Firstpage

2305

Abstract

This paper presents three major causes of low-frequency harmonics in a high-frequency soft-switched three-phase PWM boost rectifier: pulse width limits; an improper space vector modulation scheme; and dead time. Among these, the pulse width limits are related to soft-switching techniques. To eliminate undesirable low-frequency harmonics, each cause is illustrated and a solution is provided. Both simulation and experimental results prove the effectiveness of the proposed solutions. Due to the similarities between boost rectifiers and voltage source inverters, the conclusions of this paper are also applicable to high-frequency PWM voltage source inverters

Keywords

PWM power convertors; harmonics suppression; power conversion harmonics; rectifying circuits; switching circuits; PWM; dead time; high-frequency PWM voltage source inverters; high-frequency rectifier; improper space vector modulation; low-frequency harmonics; low-frequency harmonics elimination; pulse width limits; three-phase soft-switched boost rectifier; Diodes; Frequency; Power harmonic filters; Power system harmonics; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Rectifiers; Space vector pulse width modulation; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2000. Conference Record of the 2000 IEEE

Conference_Location

Rome

ISSN

0197-2618

Print_ISBN

0-7803-6401-5

Type

conf

DOI

10.1109/IAS.2000.883146

Filename

883146