Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)
- 1998.10a
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- Pages.357-361
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- 1998
A NEW CURRENT CONTROL FOR 3-LEVEL INVERTER
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Lee, Byung-Song
(Korea Railroad Research Institute, KRRI)
;
- Cho, Yun-Ok (Korea Railroad Research Institute, KRRI) ;
- Park, Hyun-June (Korea Railroad Research Institute, KRRI) ;
- Kim, Myung-yong (Korea Railroad Research Institute, KRRI) ;
- Byun, Yeun-Sub (Korea Railroad Research Institute, KRRI) ;
- Kim, Yun-Ho (Dept. of Electrical Eng., Chung-Ang University. Korea) ;
- Lee, Jae-Hak (Dept. of Electrical Eng., Chung-Ang University. Korea)
- Published : 1998.10.01
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