TY - GEN
T1 - A novel method of suppressing the inrush current of transformers using a series-connected voltage-source PWM converter
AU - Yamada, Hiroaki
AU - Hiraki, Eiji
AU - Tanaka, Toshihiko
PY - 2005
Y1 - 2005
N2 - This paper proposes a novel method of suppressing the inrush current of transformers. A small-rated voltage-source PWM converter is connected in series to a transformer through a matching transformer. Since the connected PWM converter serves as a resistor for the source current, no inrush phenomenon occurs. The basic principle of the proposed method is discussed. Digital computer simulation is implemented to confirm the validity and excellent practicability of the proposed method using PSCAD/EMTDC. A prototype experimental model is constructed and tested. The experimental results demonstrate that the proposed method can perfectly suppress the inrush phenomena. The required-rating of the PWM converter, which acts as a damping resistor for the inrush phenomena, is about 0.25% of that of the main transformer in single-phase circuits, in the experimental results. In three-phase circuits, it is less than 0.1%.
AB - This paper proposes a novel method of suppressing the inrush current of transformers. A small-rated voltage-source PWM converter is connected in series to a transformer through a matching transformer. Since the connected PWM converter serves as a resistor for the source current, no inrush phenomenon occurs. The basic principle of the proposed method is discussed. Digital computer simulation is implemented to confirm the validity and excellent practicability of the proposed method using PSCAD/EMTDC. A prototype experimental model is constructed and tested. The experimental results demonstrate that the proposed method can perfectly suppress the inrush phenomena. The required-rating of the PWM converter, which acts as a damping resistor for the inrush phenomena, is about 0.25% of that of the main transformer in single-phase circuits, in the experimental results. In three-phase circuits, it is less than 0.1%.
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M3 - Conference contribution
AN - SCOPUS:33847410206
SN - 0780392965
SN - 9780780392960
T3 - Proceedings of the International Conference on Power Electronics and Drive Systems
SP - 280
EP - 285
BT - Proceedings of the International Conference on Power Electronics and Drive Systems
T2 - Sixth International Conference on Power Electronics and Drive Systems, PEDS 200
Y2 - 28 November 2005 through 1 December 2005
ER -