Application of a unsymmetrical PWM technique in harmonic compensators

Author

Zhang, Hui ; Braun, Michael

Author_Institution

Karlsruhe Univ.

fYear

2005

fDate

11-14 Sept. 2005

Abstract

In this paper a new PWM technique with optimized pulse pattern using unsymmetrical switching angles (OPUS) for low switching frequency is introduced. The calculation scheme of the OPUS technique and the control range of harmonics are presented. The technique is designed for use in an active power filter, by using as parallel compensation of the harmonic current or series compensation of the harmonic voltage separately. The successful operation is demonstrated by the simulation of a parallel compensator and a series compensator. The simulation results illustrate a good performance of the harmonics compensation. The technique is further validated by FFT analysis

Keywords

active filters; compensation; fast Fourier transforms; power harmonic filters; FFT analysis; active power filter; harmonic compensators; harmonic current parallel compensation; harmonic voltage series compensation; low switching frequency; optimized pulse pattern; parallel compensator; series compensator; unsymmetrical PWM technique; unsymmetrical switching angles; Active filters; Power electronics; Power harmonic filters; Power system harmonics; Pulse inverters; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Switching frequency; Voltage; Pulse Width Modulation (PWM); flexible AC transmission systems(FACTS; harmonic compensation; harmonics control range; unsymmetrical optimal pulse pattern; voltage source inverter;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Applications, 2005 European Conference on

Conference_Location

Dresden

Print_ISBN

90-75815-09-3

Type

conf

DOI

10.1109/EPE.2005.219505

Filename

1665695