Harmonic cancellation for a twelve-pulse rectifier using DC bus modulation

Author

Raju, N.R. ; Daneshpooy, A. ; Schwartzenberg, J.

Author_Institution

Silicon Power Corp., Exton, PA, USA

Volume

4

fYear

2002

fDate

13-18 Oct. 2002

Firstpage

2526

Abstract

This paper presents a new method to eliminate harmonics drawn by a twelve-pulse rectifier through modulation of the DC bus. A PWM converter with low ratings is inserted in the DC link and controlled in a fashion that results in sinusoidal currents at the input. The bulk of the power transfer is handled by the diode bridges, while the additional PWM converter deals only with a ripple voltage. Circuit implementations applicable for series and parallel connections of the two constituent six-pulse sections are described. The proposed approach offers a low-cost alternative to PWM rectifiers or 18-pulse rectifiers. Operation of the circuit is verified through computer simulations.

Keywords

AC-DC power convertors; PWM power convertors; circuit simulation; harmonic distortion; harmonics suppression; power conversion harmonics; power engineering computing; rectifying circuits; DC bus modulation; DC link; PWM converter; computer simulation; harmonics elimination; power transfer; ripple voltage; twelve-pulse rectifier harmonic cancellation; Bridge circuits; Diodes; Inductors; Power harmonic filters; Power system harmonics; Pulse width modulation; Pulse width modulation converters; Rectifiers; Silicon; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the

Conference_Location

Pittsburgh, PA, USA

ISSN

0197-2618

Print_ISBN

0-7803-7420-7

Type

conf

DOI

10.1109/IAS.2002.1042801

Filename

1042801