Kabushiki Kaisha Toshiba

Tamon Ozaki

Susumu Kinoshita

Toshio Shimizu

Takahiro Imai

Mami Mizutani

Kunihiko Wada

Hisashi Matsuda

Motofumi Tanaka

Yukitaka Monden

Hiroyuki Yasui

Naohiko Shimura

Shohei Goshima

Toshiki Osako

Yutaka Ishiwata

Sueyoshi Mizuno

Masahiro Asayama

Takafumi Nakahama

Shinichi Noda

Hiroki Sekiya

Toshimasa Yamada

Yutaka Uchida

Nagaaki Muro

Yosuke Tonami

Hisayuki Hirai

Isao Onodera

Yuusaku Hata

Susumu Kojima

An airflow control devicein an embodiment includes: a vortex shedding structure portiondischarging an airflow flowing on a surface in a flow direction as a vortex flow; and a first electrodeand a second electrodedisposed on a downstream side of the vortex shedding structure portionvia a dielectric. By applying a voltage between the first electrodeand the second electrode, flow of the airflow on the downstream side of the vortex shedding structure portionis controlled.

Airflow control device and airflow control method

A wind power generation systemof an embodiment includes a rotorhaving a huband blades, a nacellepivotally supporting the rotor, a towersupporting the nacelle, an airflow generation deviceprovided in a leading edge of each of the bladesand having a first electrodeand a second electrodewhich are separated via a dielectric, and a discharge power supplycapable of applying a voltage between the electrodes of the airflow generation device. Further, the system includes a measurement device detecting information related to at least one of output in the wind power generation system, torque in the rotorand a rotation speed of the blades, and a control unitcontrolling the discharge power supplybased on an output from the measurement device.

Wind power generation system and control method for the same

A wind power generation systemof an embodiment includes a rotorhaving blades, an airflow generation deviceprovided in a leading edge of each of the bladesand having a first electrodeand a second electrodewhich are separated via a dielectric, a discharge power supplyapplying a voltage between the electrodes of the airflow generation device, and a control unitcontrolling the discharge power supply. The control unitcontrols the voltage to perform pulse modulation so that the value of a relational expression fC/U is 0.1 or larger and 9 or smaller where f is a pulse modulation frequency of the voltage, C is a chord length of the blades, and U is a relative velocity combining a peripheral velocity of the bladesand a wind velocity, so as to generate plasma induced flow.

An enameled wire capable of improving withstand lifetime with respect to the application of surge voltage of an inverter and thermal degradation thereof while restricting an amount of an inorganic filler material is provided. The enameled wire includes an electrically conductive wire () and a coating () formed of a high molecular compound uniformly mixed with an inorganic filler material in the form of fine flat particles provided around the electrically conductive wire (). The enameled wire may include an electrically conductive wire (), a coating () formed of a polyester imide resin solution mixed with an inorganic filler material in the form of fine flat particles and provided on the conductive wire and a coating () formed of polyamide imide and provided on the coating ().

Enameled wire

Growing community of inventors

Fuchu, Japan

Tamon Ozaki