Kabushiki Kaisha Toshiba

Yamaha Corporation

The Tokyo Electric Power Company, Incorporated

Wakamoto Pharmaceutical Co., Ltd.

Tokyo Electron Power Company Incorporated

Hirokazu Suzuki

Noriko Kawakami

Masayoshi Goto

Haruhisa Inokuchi

Kenichi Suzuki

Shoichi Irokawa

Shuntaro Suzuki

Yoshitami Ohashi

Ken-Ichi Suzuki

Yoshinori Sakurai

Koji Sakamoto

A communication relaying method includes receiving an analogue sound signal. The method also includes converting the received analogue sound signal into a digital sound signal. The method also includes packetizing the digital sound signal into a first IP packet. The method also includes receiving a second IP packet. The method also includes transmitting the first IP packet with priority over the second IP packet.

Communication relaying method, communication relaying apparatus, and non-transitory computer-readable recording medium

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

A control system for a power conversion system composed of a plurality of power converters, each of which is connected between one of a plurality of AC power systems and a DC line to exchange an electric power between them, respectively. The control system is composed of a plurality of control units, each of which includes units for detecting an AC current flowing between the AC power system and the power converter, an AC voltage of the AC power system, and a DC voltage of the power converter, and a unit for detecting an active power and a reactive power exchanged between the power converter and the AC power system. Each of the control units further includes an active power control unit for generating an active current command so that the DC voltage drops with the increase of one of the active power and a DC current, a unit for setting a reactive power reference, a reactive power control unit for comparing the reactive power reference and the reactive power to obtain a reactive power difference and for generating a reactive current command so as to bring the reactive power difference close to zero, a current control unit for generating a plurality of output voltage commands so as to coincide the AC current to the active and reactive current commands, and a gate control unit for switching the semiconductor switching devices in the power converter based on the output voltage commands.

Control system for power conversion system

A method of diagnosing renal diseases by detecting fragments of albumin in human urine. The detection of the fragments is carried out by, for example, immunological methods or liquid chromatography techniques.

Method of diagnosing renal diseases

Growing community of inventors

Kanagawa, Japan

Hirokazu Suzuki