Title :
Analysis of harmonic for 12-pulse converter under unbalanced voltage operation due to lightning related voltage sags and short interruption
Author :
Boonseng, C. ; Kinnares, V.
Author_Institution :
Dept. of Electr. Eng., King Mongkut´´s Inst. of Technol., Bangkok, Thailand
Abstract :
This paper presents a summary of power quality related concerns associated with the applications of 12-pulse converter with DC motor drives in industrial plants. These concerns include power system harmonics and harmonic distortion under unbalance voltage condition during voltage sags occurrence. The definition proposed focuses on system faults due to lightning. The voltage unbalance causes large unbalance source currents resulting in excessive input current and high distortion. The percentage of total harmonic distortion of input current (THDi) increased approximately 47% at 6 per unit of normal peak current. The measurement and analysis of such events has been performed. Finally, the new phase-angle jump concept based on measured techniques is introduced
Keywords :
DC motor drives; harmonic distortion; lightning; power convertors; power supply quality; power system harmonics; 12-pulse converter; DC motor drives; dynamic distortion analysis; harmonic analysis; harmonic distortion; harmonic filter; high distortion; industrial plants; input current; lightning related voltage sags; phase-angle jump; power quality; power system harmonics; short interruption; system faults; total harmonic distortion; unbalance source currents; unbalance voltage condition; unbalanced voltage operation; voltage sags; voltage unbalance; DC motors; Distortion measurement; Harmonic analysis; Harmonic distortion; Industrial plants; Lightning; Power quality; Power system harmonics; Total harmonic distortion; Voltage;
Conference_Titel :
Power Engineering Society Winter Meeting, 2001. IEEE
Conference_Location :
Columbus, OH
Print_ISBN :
0-7803-6672-7
DOI :
10.1109/PESW.2001.917206
