Hitachi, Ltd.

Mitsubishi Heavy Industries Limited

Hitachi Medical Corporation

Mitsubishi Hitachi Power Systems, Ltd.

Mitsubishi Power, Ltd.

Shigeki Tounosu

Kengo Iwashige

Kazuhiko Takahashi

Hiroyuki Takeuchi

Yuji Enomoto

Keiji Suzuki

Jun Yoshida

Kenichi Hattori

Norihito Yanagita

Hirotaka Takeshima

Mitsushi Abe

Hirooki Tokoi

Hiroyuki Watanabe

Mitsuru Saeki

Tadaaki Kakimoto

Tomoo Chiba

Ryuichiro Iwano

Tamami Kurihara

Tetsuji Morita

Hajime Adachi

The present invention provides a data sorting device and method and a monitoring and diagnosis device, which are able to create a model conveniently. A data sorting device and a monitoring and diagnosis device of the present invention include an operating data database which stores operating data of the plant equipment in a time-series manner. The devices input the operating data that are highly associated physically and engineeringly among the operating data stored in the operating data database, inputting processing attributes relevant to the operating data that are highly associated physically and engineeringly, creating a model simulating characteristics of the plant equipment, and performing data sorting, monitoring, and diagnosis through use of the model.

Data sorting device and method, and monitoring and diagnosis device

A system and method for monitoring temperature and detecting a temperature rise of a rotating electric machine with high accuracy. A temperature monitoring system for a rotating electric machine includes: sensor data storage that stores values measured by an in-coil temperature sensor and a physical quantity sensor in the rotating electric machine; an in-machine temperature predictor that predicts a temperature by use of the value measured by the physical quantity sensor; a strand temperature calculator that calculates a relationship between a temperature of the strand and a temperature measured by the in-coil temperature sensor, based on the predicted temperature; and a strand temperature predictor that predicts a temperature of the strand from the value measured by the in-coil temperature sensor, and from the relationship between a temperature of the strand and a temperature measured by the in-coil temperature sensor calculated by the strand temperature calculator.

System and method for monitoring temperature of rotating electric machine

The present invention provides a rotating electric machine and a method of detecting electric discharge (a defect detection method for a rotating electric machine), which are able to early detect vibration sparking between a stator winding and a stator core. A rotating electric machine of the present invention comprises a cylindrical stator including a stator core and a stator winding, a rotor disposed inside the stator, at least one key bar disposed on an outer periphery of the stator core and extended in an axial direction of the stator, and at least one current detector disposed on the key bar and configured to measure a current flowing in the key bar.

Rotating electric machine and defect detection method for rotating electric machine

Rotating machinery of the invention includes a 2n-pole rotor, 72n slots, and three-phase armature windings (n&#x2265;1). Each of the slots houses a top coil on an inner radius side of the slots and a bottom coil on an outer radius side thereof. Each of the armature windings is formed by connecting the top and bottom coils and has 2n phase belts per phase. Each of the phase belts includes a first parallel winding and a second parallel winding. The top and bottom coils are formed by arranging the first and second parallel windings in a predefined order when a circumferential mean position of all top coils and bottom coils in each of the phase belts is defined as a phase belt center and an arrangement of the first and second parallel windings in at least one phase belt is viewed in an order of proximity to the phase belt center.

Rotating machinery with three-phase armature windings and first and second parallel windings

A channel connecting a first opening formed on one side surface of a rotor and a second opening formed on the other side surface of the rotor is provided, and a first distance from a rotating shaft to the center of the first opening and a second distance from the rotating shaft to the center of the second opening are differentiated. A differential pressure is generated between the first opening and the second opening provided in the rotor by the differentiating the distances from the center of the rotating shaft to the first opening and the second opening, a flow of air is generated by the differential pressure from one surface or the other surface of the rotor to the other surface or the one surface, whereby the stator in proximity to the rotor may be cooled.

Axial gap rotating-electric machine

In a superconducting magnet, including a vacuum vessel, a coil vessel inside the vacuum vessel, and a superconducting coil inside the coil vessel for generating a magnetic field, has a magnetic member, disposed inside the vacuum vessel, supported with thermal insulation, for compensating the magnetic field; a heat exchange device disposed outside the vacuum vessel for supplying to or absorbing heat from the vacuum vessel; and thermal conducting members thermally connecting the heat exchange device via the vacuum vessel to the magnetic member. An MRI including the superconducting magnet is also disclosed.

Superconducting magnet and magnetic resonance imaging apparatus

A rotating electric machine wherein sub slots serving as cooling fluid ducts in the axial direction are provided at the bottoms of the coil slots formed in the rotor, radial cooling fluid ducts are formed through the field coil of the rotor in the radial direction of the rotor and juxtaposed in the axial direction of the rotor, so as to communicate the sub slots with the air gap, and radial cooling fluid ducts are formed through the stator in the radial direction of the stator and juxtaposed in the axial direction of the rotor, corresponding in position to the radial cooling fluid ducts in the rotor, so as to communicate the inner periphery of the stator with the outer periphery of the stator.

Rotating electric machine

Growing community of inventors

Yokohama, Japan

Shigeki Tounosu