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To explore new possibilities, Tokyo Metro Co., Ltd. has been working on various new technologies with a view towards practical use. From among these technologies, we explain “Stationary energy storage system (SESS)” and “Station auxiliary power supply unit” as facilities that could contribute to the reduction of environmental load.
In this paper, a self-powered lightning current sensor based on the electromagnetic induction principle has been proposed. The sensor whose signal coil and power harvesting coil are nested in lightning channel (such as grounding wire of lightning arresters) can be triggered and powered by the lighting current. The signal acquisition is realized by the signal coil, and the polarity and peak value of...
Nanometer technologies are exposed to several sources of variability, among these, Power Supply Noise (PSN) has become a mayor challenge. This paper provides a broad perspective of the causes and effects of PSN along with the evolution of techniques that have been proposed to deal with it, which heavily rely on the information that can be gathered from in situ monitoring circuits. A detailed taxonomy...
oscilloscope is used to measure the voltage ripple in PLTP Darajat, but experienced problems because the oscilloscope can not measurred simultaneously as many as 40 points measuring. In this paper, we will show the results of the design and implementation of the PLC to measure the ripple voltage total of 40 measuring points simultaneously. This research was implemented in geothermal power plants Darajat...
With the development of smart grid, a large amount of monitor equipment is employed to supervise the condition of power cable. Because of its convenience, extracting electric energy from cable via a current transformer is a promising technique used in power supply for these pieces of monitoring equipment. In this paper, an enhanced energy harvesting method based on current transformer in resonant...
India-based Neutrino Observatory (INO) collaboration is planning to build a massive 50,000 ton Iron Calorimeter (ICAL) detector. Particle detectors called Resistive Plate Chambers (RPCs) - about 30,000 in number, will be used as active detector elements. RPCs require a high voltage of about 10KV to be applied across its parallel glass electrodes for producing the required uniform field needed for...
This paper presents the practical implementation of an experimental platform used for the automatic transfer switch to the back-up power source. The automatic transfer switch concept represents the procedure of fast connection of the electrical consumers to a back-up electric power source. The connection to the back-up power source is necessary in the event of failure of the main power source. The...
The method of fault location based on the traveling-wave detection device on the overhead transmission line has been proposed in this study. The high-frequency fault traveling-waves are collected by installing two traveling-wave detection devices based on Rogowski roil on the high-voltage transmission lines. Phase-mode transformation and the detection method of wavelet transform mode pole maximum...
A vehicle electrical power management system (VEPMS) is proposed, based on a new vehicle electrical power supply mechanism. As a classified power supply mechanism, it supplies power for electronic control units and traditional electrical devices separately, resulting in clean, pollution-free control signals, with no electromagnetic interference. According to the requirement of electronic control units...
This paper describes testing procedure of the mobile telemedical power supply. The power supply module includes Li-ion battery, protection circuit, battery management, low drop out regulators and charge pumps. The efficiency and voltage-current testing are also included. This power supply hardware is aimed to construction of the portable application and research in home care.
Power supply is significant in the design of robot control system. A power design aiming at the requirement of wheeled mobile robot system is introduced in the paper. With battery pack used as input, the power circuit supplied multi-channel voltage outputs through step-up and step-down processes by the composition of switching regulator and linear regulator to meet different voltage requirements of...
A high bandwidth critical path monitor (1 sample/ cycle at 4-5 GHz) capable of providing real-time timing margin information to a variable voltage/frequency scaling control loop is described. The critical path monitor tracks the critical path delay to within 1 FO2 inverter delay with a standard deviation less than 3 FO2 delays over process, voltage, temperature, and workload. The CPM is sensitive...
This paper discusses steps necessary to undertake and technical details on setting up and maintaining sub-1V balance in the ionizeed environment. Specifics of closed-loop control are discussed. Results of tests under various conditions are presented.
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