Improved frequency characteristics of the randomized PWM boost rectifier

Franc Mihalič (Author), Miro Milanovič (Author), Carlos Cuoto (Author)

Abstract

A randomized pulse width modulation (RPWM) algorithm is applied in the control unit of the boost rectifier to achieve improved frequency characteristics in the wide band. First, the introduction of the RPWM switching is reflected in a smaller increase of the total harmonic distortion (THD) factor in the input current. Nevertheless, decrease of the power factor is negligibly small. Second, the power spectrum density (PSD) of the input current is estimated and measured to evaluate the influence of randomization in the high-frequency range. This approach offers an effective and credible prediction method for reduction of conductive electromagnetic interference (EMI) by using the RPWM switching.

Keywords

usmerniki;usmerniki navzgor;naključna pulzno širinska modulacija;estimacijske metode;skupno harmonsko popačenje;faktor moči;konduktivne elektromagnetne motnje;rectifiers;boost rectifiers;randomized pulse width modulation;estimation methods;total harmonic distortion;power factor;conductive electromagnetic interference;

Data

Language:	English
Year of publishing:	2003
Typology:	1.01 - Original Scientific Article
Organization:	UM FERI - Faculty of Electrical Engineering and Computer Science
UDC:	621.314.6
COBISS:	8351510
ISSN:	0020-7217
Views:	1743
Downloads:	71
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary keywords:	usmerniki;usmerniki navzgor;naključna pulzno širinska modulacija;estimacijske metode;skupno harmonsko popačenje;faktor moči;konduktivne elektromagnetne motnje;
URN:	URN:SI:UM:
Pages:	str. 235-242
Volume:	ǂVol. ǂ90
Issue:	ǂno ǂ4
Chronology:	2003
ID:	8718866