Title :
A new current control for three-level inverter
Author :
Lee, Byung-Song ; Jeong, Rag-Gyo ; Yoon, Yong-Ki ; Mok, Jin-Yong ; Choi, Sung-Kyu
Author_Institution :
Dept. of Urban Transit Eng. Div., Korea Railroad Res. Inst., Kyounggi, South Korea
Abstract :
A new current controlled PWM technique for a 3-level inverter has been proposed and described in the paper. The proposed current control has the simple structure without needing to-calculate the switching angles of the voltage vectors. The output in the proposed inverter contains less harmonic content than that of a conventional current controlled PWM controller since the current control can be applied to the 3-level inverter. In addition, the proposed current controlled PWM technique has lower switching frequency than that of a conventional current controlled PWM technique at the same current limit. The control method and the performance for a proposed 3-level inverter has been discussed and investigated by the computer simulation
Keywords :
DC-AC power convertors; PWM invertors; circuit analysis computing; control system analysis computing; control system synthesis; electric current control; harmonic distortion; power conversion harmonics; power engineering computing; switching circuits; PWM technique; computer simulation; current control scheme; harmonic content; switching angles; switching frequency; three-level inverter; voltage vectors; Current control; Leg; Motor drives; Pulse width modulation; Pulse width modulation inverters; Railway engineering; Switches; Switching frequency; Torque control; Voltage control;
Conference_Titel :
TENCON 99. Proceedings of the IEEE Region 10 Conference
Conference_Location :
Cheju Island
Print_ISBN :
0-7803-5739-6
DOI :
10.1109/TENCON.1999.818711
