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Nagoya, Japan

Chubu Electric Power Co., Inc. , abbreviated as Chuden in Japanese, is a Japanese electric utilities provider for the middle Chūbu region of the Honshu island of Japan. It provides electricity at 60 Hz, though an area of Nagano Prefecture uses 50 Hz. Chubu Electric Power ranks third among Japan’s largest electric utilities in terms of power generation capacity, electric energy sold, and annual revenue. It is also one of Nagoya's "four influential companies" along with Meitetsu, Matsuzakaya, and Toho Gas. Recently, the company has also expanded into the business of optical fibers. On January 1, 2006 a new company, Chubu Telecommunications, was formed. Wikipedia.


Akagi H.,Tokyo Institute of Technology | Kitada R.,Chubu Electric Power Co.
IEEE Transactions on Power Electronics | Year: 2011

This paper discusses the control and design of the 6.6-kV back-to-back (BTB) system combining bidirectional isolated dc/dc converters and modular multilevel cascade pulsewidth modulation (PWM) converters. The system consists of multiple converter cells connected in cascade per phase at both front ends. Each converter cell consists of a bidirectional isolated medium-frequency dc/dc converter and two voltage-source H-bridge (single-phase full-bridge) PWM converters. Extremely low-voltage steps bring a significant reduction in harmonics and electromagnetic interference emissions to the BTB system. This paper designs, constructs, and tests a single-phase downscaled BTB system rated at 120 V and 3.3 kW to verify the viability and effectiveness, leading to the actual system. © 2011 IEEE. Source


Patent
TOKYO Electrical POWER COMPAY INCORPORATED, Chubu Electric Power Co., Johnson Controls, Kobe Steel, Danish Technological Institute DTI and Kansai Electric Power Co. | Date: 2012-04-13

The condensing apparatus


Patent
Chubu Electric Power Co. | Date: 2014-04-04

To provide a food material cutter by which any operator can easily, accurately and rapidly slice ring-shaped and disk-shaped food materials such as doughnuts and bagels in half regardless of the degree of skill of the operator. The food material cutter of the present invention comprises a feeding port for feeding a doughnut, titled plates and guiding plates for guiding the fed doughnut, and rotary blades for slicing the guided doughnut in half in the thickness direction. Also, the link mechanism causes the tilt angles of the tilted plates to be increased due to the own weight of the doughnut, and causes the guiding plates to move by an equal distance from the center of the clearance between the respective guiding plates while matching with the thickness of the doughnut. The doughnut, when fed from the feeding port, is guided by the titled plates and guiding plates, and falls down to the palette in a state where it is sliced in half in the thickness direction.


Patent
Tokyo Electric Power Company, Chubu Electric Power Co., Johnson Controls, Kabushiki Kaisha Kobe Seiko Sho, Danish Technological Institute DTI and Kansai Electric Power Co. | Date: 2011-03-15

An axial flow compressor includes: an electric motor including a rotating shaft; a compression portion including a driving shaft connected without a speed-up gear to the rotating shaft of the electric motor and a rotor rotating together with the driving shaft, the compression portion driving the driving shaft and thereby compressing a working fluid; and a velocity reducing portion having a space for reducing the flow velocity of a working fluid discharged from a discharge opening of the compression portion. The rotating shaft of the electric motor is connected to the end of the driving shaft on the side of the discharge opening; and the velocity reducing portion is disposed so as to surround the electric motor.


Patent
Furukawa Electric Group and Chubu Electric Power Co. | Date: 2012-02-01

A method for manufacturing a superconducting wire material in which the superconducting current is not saturated even when a superconducting layer is made into a thick film, and a superconducting wire material. In the method a superconducting layer is formed on a metal substrate interposed by an intermediate layer, the method including heating the metal substrate up to the film-formation temperature of a superconducting film for forming the superconducting layer, forming a superconducting film having a film thickness of at least 10 nm and no more than 200 nm on the intermediate layer, and reducing the metal substrate temperature to a level below the film-formation temperature of the superconducting film, and the superconducting film-formation, including the heating, the film-formation, and the cooling, are performed a plurality of times.

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