A method to damp oscillations on the input LC filter of current-type AC-DC PWM converters by using a virtual resistor

Author

Dahono, Pekik Argo

Author_Institution

Dept. of Electr. Eng., Bandung Inst. of Technol., Indonesia

fYear

2003

fDate

23-23 Oct. 2003

Firstpage

757

Lastpage

761

Abstract

A control method to damp oscillations on the input LC filter of current-type AC-DC PWM converters is proposed in this paper. The oscillations on the input LC filter of current-type AC-DC PWM converters are damped by using a virtual resistor that can be connected either in series to or parallel with the filter inductor or capacitor. Because no real resistor is used, the efficiency of the converters is not sacrificed. The required additional sensor and implementation of the virtual resistor in the control algorithm is strongly influenced on how the virtual resistor is connected to the LC filter. We need an additional current sensor if the virtual resistor is connected in series to the filter inductor or capacitor and an additional voltage sensor if connected in parallel. Simulated results are included to verify the proposed method.

Keywords

AC-DC power convertors; PWM power convertors; filters; oscillations; resistors; AC-DC PWM converters; LC filter; current sensor; damp oscillations; filter inductor; virtual resistor; voltage sensor; Capacitive sensors; Capacitors; Inductors; Power harmonic filters; Pulse width modulation; Pulse width modulation converters; Resistors; Resonant frequency; Switching converters; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference, 2003. INTELEC '03. The 25th International

Conference_Location

Yokohama, Japan

Print_ISBN

4-88552-196-3

Type

conf

Filename

1252201