Title :
Analysis of 12 pulse phase control AC/DC converter
Author :
Liang, Tsomg-Juu ; Chen, Jim-Fuh ; Chu, Ching-Lung ; Chen, Kuen-Jyh
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
In this paper, the unbalanced current in the 12-pulse phase control AC/DC converters was studied. The 12-pulse Δ-Y type AC/DC converter will keep a balanced voltage with 30° phase shifted at the low coupling coefficient condition, but an unbalanced current will be obtained in the 12-pulse autotransformer phase shift AC/DC converter at the low coupling coefficient condition. The theoretical phasor analysis of the unbalanced current was presented and a feedback controller was designed to overcome this problem. Finally, a 3 kW 12-pulse autotransformer phase shifted AC/DC converter was implemented to demonstrate the theoretical analysis
Keywords :
AC-DC power convertors; autotransformers; feedback; phase control; 12 pulse phase control AC/DC converter; 12-pulse Δ-Y type AC/DC converter; 12-pulse autotransformer; 3 kW; 30° phase shifted balanced voltage; feedback controller; low coupling coefficient; phase shift AC/DC converter; phasor analysis; unbalanced current; Adaptive control; DC-DC power converters; Phase control; Power harmonic filters; Power system harmonics; Power transformers; Pulse power systems; Reactive power; Thyristors; Voltage;
Conference_Titel :
Power Electronics and Drive Systems, 1999. PEDS '99. Proceedings of the IEEE 1999 International Conference on
Print_ISBN :
0-7803-5769-8
DOI :
10.1109/PEDS.1999.792804
