DocumentCode :
788965
Title :
Single-phase unidirectional AC/DC converter with high power factor
Author :
Lin, B.-R. ; Yang, T.Y.
Author_Institution :
Dept. of Electr. Eng., Nat. Yunlin Univ. of Sci. & Technol., Taiwan
Volume :
152
Issue :
2
fYear :
2005
fDate :
3/4/2005 12:00:00 AM
Firstpage :
141
Lastpage :
148
Abstract :
A novel single-phase unidirectional power flow rectifier is proposed to achieve power factor correction and DC bus voltage regulation. Four active switches, two power diodes and two DC side capacitors are used in the proposed circuit topology to generate a three-level PWM voltage waveform on the ac terminal of the proposed rectifier. Compared with neutral-point-clamped and capacitor-clamped topologies, no clamping diode or flying capacitor is used in the proposed rectifier. The reference line current is derived from the DC tank voltage controller and a sinewave generator in phase with mains voltage. The carrier-based current controller is used in the inner loop to track the line current command. A neutral-point voltage compensator is adopted in the control scheme such that the capacitor voltages on the DC side are balanced. The effectiveness of the proposed control algorithm is verified by the computer simulations and experimental results.
Keywords :
AC-DC power convertors; PWM power convertors; electric current control; power factor correction; rectifying circuits; voltage control; DC bus voltage regulation; DC tank voltage controller; carrier-based current controller; neutral-point voltage compensator; power factor correction; reference line current; sinewave generator; single-phase unidirectional AC/DC converter; three-level PWM voltage waveform;
fLanguage :
English
Journal_Title :
Electric Power Applications, IEE Proceedings -
Publisher :
iet
ISSN :
1350-2352
Type :
jour
DOI :
10.1049/ip-epa:20041213
Filename :
1425269
Link To Document :
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