Mitsubishi Electric

About: Mitsubishi Electric is a company organization based out in Ratingen, Germany. It is known for research contribution in the topics: Signal & Voltage. The organization has 23024 authors who have published 27591 publications receiving 255671 citations. The organization is also known as: Mitsubishi Electric Corporation & Mitsubishi Denki K.K..

Research & development of superconducting fault current limiter in Japan

Abstract: R&D of fundamental technologies for superconducting AC Power equipment (Super-ACE project) started as a national project, for a five-year plan since fiscal 2000 by MITI and NEDO. This project is to research and develop the basic technology of super-conductive cable, fault current limiter and transformer. This paper summarizes the research and development of following 2 types FCL. The R&D of the SN transition resistive type superconducting thin film fault current limiter aims to establish large-current/high-voltage technology by arranging films in multi-parallel/series, and increasing the current-carrying capacity through widening the area of the thin film of the current limiting element. The R&D of the reactor for a rectifier-type fault current limiter using coils of superconducting wire of the Ag sheath Bi2223 tape, aiming to apply it to high-voltage systems.

Load voltage detecting device for use in an apparatus for supplying a current variable with time to a load section

Abstract: A load voltage detecting device for use in an apparatus for supplying a current variable with time to a load section. The load voltage detecting device for an apparatus such as a pulsed are welding machine can accurately detect the load voltage from the output voltage of the pulse current supplying section without being affected by the reactor component and the resistance component of the load section and the elements extended to the load section such as the cables and the welding torch.

Strength Prediction of Mechanically Fastened Quasi-Isotropic Carbon/Epoxy Joints

Abstract: A study on predicting the joint strength of mechanical fasteners has been performed. However bearing failure that is most important failure mode for designing joints has not been taken into consideration. So in this study, the prediction method in consideration with bearing failure was examined. Two joint geometries that exhibit net-tension failure and bearing failure were chosen. In the proposed method, the characteristic length is combined with the Yamada-Sun failure criterion, and the characteristic length for compression was determined from the "bearing failure test" that was newly conceived to take bearing failure into consideration. The proposed prediction method was applied to quasi-isotropic carbon/epoxy T300/#2500 joints showing net-tension and bearing failure experimentally. Good agreement was found between the predicted and experimental results for each joint geometry.

Method for Selecting Antennas and Beams in MIMO Wireless LANs

Abstract: A computer implemented method selects antennas in a multiple-input, multiple-output wireless local area network that includes multiple stations, and each station includes a set of antennas. Multiple consecutively transmitted sounding packets are received in a station. Each sounding packet corresponds to a different subset of the set of antennas. A channel matrix is estimated from the multiple consecutively transmitted sounding packets. A frame including a high throughput (HT) control field is sent to initiate a selecting of antennas, and a subset of antennas is selected according to the channel matrix.