DocumentCode :
781965
Title :
Analysis of the Instantaneous Power Flow for Three-Phase PWM Boost Rectifier Under Unbalanced Supply Voltage Conditions
Author :
Wu, X.H. ; Panda, S.K. ; Xu, J.X.
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore
Volume :
23
Issue :
4
fYear :
2008
fDate :
7/1/2008 12:00:00 AM
Firstpage :
1679
Lastpage :
1691
Abstract :
This paper proposes the analysis of the instantaneous power flow of three-phase pulse-width modulation (PWM) boost rectifier under unbalanced supply voltage conditions. An analytical expression for the instantaneous output power has been derived, which provides the link between the output dc link voltage and the instantaneous output power. A direct relationship between the dc link voltage ripples and the second harmonic component in the instantaneous output power has been established. Based on the input and output instantaneous power analytical expressions provided, the presence of the odd order harmonic components in the ac line currents can be explained. A simple cascaded PI control scheme has been developed for the dc output voltage control. The controller ensures that the dc link voltage is maintained constant and the supply side power factor is kept close to unity under the unbalanced supply voltage operating conditions. Simulation and experimental test results are provided on a 1.6-kVA laboratory-based PWM rectifier to validate the proposed analysis and control scheme.
Keywords :
PI control; PWM rectifiers; cascade control; load flow; voltage control; DC link voltage ripples; DC output voltage control; apparent power 1.6 kVA; cascaded PI control scheme; instantaneous power flow; odd order harmonic components; pulse-width modulation boost rectifier; second harmonic component; three-phase PWM boost rectifier; unbalanced supply voltage conditions; Harmonic analysis; Load flow; Pi control; Power generation; Power supplies; Power system harmonics; Pulse width modulation; Rectifiers; Space vector pulse width modulation; Voltage control; Instantaneous power flow; three-phase pulse-width modulation (PWM) boost rectifier;
fLanguage :
English
Journal_Title :
Power Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8993
Type :
jour
DOI :
10.1109/TPEL.2008.925158
Filename :
4558264
Link To Document :
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