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..

Power conversion device

Abstract: In the case of performing self-sustained operation, when power conversion devices supply power to loads, all DC/AC conversion circuits of the power conversion devices are operated in a voltage control mode, and effective voltage (amplitude) of reference AC voltage as a control target for AC power outputted from each DC/AC conversion circuit under voltage control is adjusted in accordance with the power generation amount of a solar panel as a DC power supply, and the state of charge of a storage battery, thereby the amount of power supplied to the loads is controlled.

Fault diagnosis of power systems

Abstract: Knowledge-based fault diagnosis systems are classified by the method of inference utilized in the knowledge-based systems for fault diagnosis of power systems. The characteristics of each class and corresponding issues as well as the state-of-the-art techniques for improving their performance are presented. Additional topics covered are user interfaces, interfaces with energy management systems, and expert system development tools for fault diagnosis. Results and evaluation of actual operation in the field are also discussed. >

Diamond park and spline: Social virtual reality with 3d animation, spoken interaction, and runtime extendability

Abstract: Diamond Park is a social virtual reality system in which multiple geographically separated users can speak to each other and participate in joint activities. The central theme of the park is cycling. Human visitors to the park are represented by 3D animated avatars and can explore a square mile of 3D terrain. In addition to human visitors, the park hosts a number of computer simulations, including tour buses and autonomous animated figures. Diamond Park is implemented using a software platform called Spline, which makes it easy to build virtual worlds where multiple people interact with each other and with computer simulations in a 3D visual and audio environment. Spline performs all the processing necessary to maintain a distributed, modifiable, and extendable model of a virtual world that is shared between the participants. For more information visit http://www.merl.com.

Mobile communication system, base station, mobile station, and base station installation method

Abstract: Provided is a mobile communication system which eliminates a non-sensitive region and in which a mobile station can stably communicate with a base station. Moreover, the mobile communication system can reduce the handover failure ratio and the number of the handovers. In the mobile communication system, if quality information on the acquired data relates to data from a base station A, the mobile station (11) reports it to the base station A; and if the quality information relates to data from a base station B, the mobile station (11) reports it to the base station B. The base stations A and B report the quality information received from the mobile station (11) as history information on the mobile station (11) to a base station upper node device (14). The base station upper node device (14) compares the quality information received from the two base stations. The base station upper node device (14) selects the base station which has sent better quality and instructs the base station to communicate with the mobile station (11). The base station upper node device (14) instructs the other base station not to communicate with the mobile station (11).

Static power conditioner using GTO converters for AC electric railway

Abstract: This paper proposes a static power conditioner (SPC) using self-commutated inverters in order to solve the problems of an AC electric railway. For compensating the voltage unbalance of a three-phase electric power system, the SPC controls the electric power in railway substations. Besides, for compensating the voltage drop in the feeding circuit, the SPC controls the reactive power in sectioning post. Further, it can also control the harmonic currents, so the SPC can be expected to be an ideal compensator. This paper gives an outline of the SPC, the theoretical studies of compensation using an SPC and the results of simulation of its performance. >