A leading current compensation control in three phase PWM AC/DC converter

Author

Kim, E.S. ; Byun, Y.B. ; Kye, M.H. ; Joe, K.Y. ; Koo, H.H. ; Kim, Y.H. ; Yoon, B.D.

Author_Institution

Korea Electrotechnol. Res. Inst., Changwon, South Korea

fYear

1996

fDate

6-10 Oct 1996

Firstpage

556

Lastpage

561

Abstract

The voltage and current distortion at the AC utility system due to PWM switching is generated according to the existence of source inductance (Lu). This voltage or current distortion generates electromagnetic interference (EMI) problems in nearby equipment. To solve these problems, an AC filter capacitor is needed to absorb the switching voltage and current distortion. However, the use of the AC filter induces the problem of leading current, and the resonance between AC filter capacitor (Cf) and source inductance (Lu) in the utility system. In this paper, a new leading current compensation scheme for three phase PWM AC/DC converter is presented to reduce the leading current and the resonance of Cf and Lu*Lb/(Lu+Lb). An analysis and experiments are performed to verify the proposed current control scheme by implementing a 6 kW (450 VDC, 16 A), 20 kHz IGBT based experimental circuit

Keywords

AC-DC power convertors; PWM power convertors; compensation; electric current control; electromagnetic interference; inductance; insulated gate bipolar transistors; power filters; resonant power convertors; switching circuits; 16 A; 20 kHz; 450 V; 6 kW; AC filter; AC filter capacitor; AC utility system; EMI; IGBT; current distortion; electromagnetic interference; leading current compensation control; leading current reduction; resonance between; resonance reduction; source inductance; switching voltage; three phase PWM AC/DC converter; voltage distortion; AC generators; Capacitors; Control systems; Electromagnetic interference; Filters; Inductance; Phase distortion; Pulse width modulation; Resonance; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference, 1996. INTELEC '96., 18th International

Conference_Location

Boston, MA

Print_ISBN

0-7803-3507-4

Type

conf

DOI

10.1109/INTLEC.1996.573390

Filename

573390