Kabushiki Kaisha Toshiba

The Tokyo Electric Power Company, Incorporated

Shoichi Irokawa

Yosuke Nakazawa

Hiroshi Uchino

Ryuta Hasegawa

Hiroyuki Nishikawa

Kihei Nakajima

Noriko Kawakami

Takeru Murao

Hirokazu Suzuki

Shunsuke Tamada

Kenichi Suzuki

A power converter includes first and second power conversion units that are connected to each other by a d.c. reactor. The first power conversion unit is a converter in which arms consisting of thyristors are connected in a bridge configuration. The second power conversion unit is an inverter in which arms each of a series combination of a thyristor and a self-excited switch unit having a GTO for producing a commutation voltage for the thyristor are connected in a bridge configuration.

Power converter having first and second power conversion units with

A power conversion system including a plurality of converter transformers. AC side windings of the converter transformers are connected in series for connecting to an AC power system. The power conversion system further includes a plurality of series connected voltage source type self-commutated converters for converting AC power into DC power or DC power into AC power. Each of the voltage source type self-commutated converters is connected to one of DC side windings of the converter transformers, respectively. The power conversion system further includes a plurality of DC voltage sources. Each of DC output sides of the voltage source type self-commutated converters is connected to one of the DC voltage sources, respectively. The power conversion system further includes a control system for controlling the voltage source type self-commutated converters such that each of DC voltages of the voltage source type self-commutated converters follows to one of DC voltage reference values for the voltage source type self-commutated converters, respectively.

Power conversion system with series connected self-commutated converters

Growing community of inventors

Saitama-ken, Japan

Shoichi Irokawa