TITLE

Analysis of 12-Pulse Rectifier Operation Under Balanced and Unbalanced Voltage Source with Input Impedance

AUTHOR(S)
Kassas, Mahmoud
PUB. DATE
June 2013
SOURCE
Arabian Journal for Science & Engineering (Springer Science & Bu;Jun2013, Vol. 38 Issue 6, p1437
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This paper presents a study of modeling and simulation of a 12-pulse circuit rectifier taking into consideration the effects of the voltage source impedance on the commutation angle for the system operating under a balanced and unbalanced three-phase supply. Three conduction modes are formed in this analysis. Based on the source inductances, the converter conduction modes will change, including mode 3 overlap when the angle overlap μ extends beyond 60° and the number of conducting devices alternate between 3 and 4 devices in each state for both upper and lower bridges. These results are verified using a detailed proposed analytical Matlab model simulation. Also, the proposed analytical model results are compared to Simulink Powersys Toolbox model results and they corresponded very well. The analytical method clearly shows the conduction states in all cases which could not be identified using the Simulink Powersys toolbox model.
ACCESSION #
87609274

 

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