The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
It is desirable to use the same power line for sending communication signals as well as transmitting power. These communication signals can be used to control smart metering, provide network control and even provide Broadband communications over power lines (BPL). There is concern about the amount of radiation produced by power line communications (PLC). The authors have developed a Matlab?? program...
Foil windings are preferable in high-current high-power inductors to realize compact designs and to reduce dc-current losses. At high frequency, however, proximity effect will cause very significant increase in ac resistance in multi-layer windings, and lead to high ac winding losses. This paper presents design, analysis and experimental verification of a two winding technique, which significantly...
The parallel continuous type of counterpoise wire is the best ground system currently, it is reduce the ground resistance less than 25 ?? in high resistivity of soil arriving 4450 ??m with 400 m length. The created ground system types of proposed chem-counterpoise can be used in both homogenous and inhomogeneous soil that have soil resistivity arriving 10000 ??m. The proposed chem-counterpoise devices...
The pillar grounding system formed of a basic horizontal linear ground square-shaped electrode and an iron armature connected to the main grounding connector is analyzed in the paper. During analysis, a recently proposed procedure for modelling the influence of a concrete cylinder on a grounding system is used. Afterwards, the system of integral equations having leakage currents?? distributions as...
Process induced variations in the interconnect capacitance and resistance have resulted in significant uncertainly in the interconnect delay. In this work, we propose a new method to compute the interconnect corner considering coupling-noise due to simultaneous switching of aggressors. In prior approaches, the interconnect corners were computed under the assumption that the aggressor nets are not...
Interior permanent magnet synchronous motor (IPMSM) which has high power and high efficiency is usually applied to traction motor for hybrid electric vehicle. We focused on the following points: flat wire coil, interior permanent magnet.
This paper describes the transient effects by grounding system methods on substation. Generally, the substation grounding system is modeled by just resistance. However, in this paper, new method which is considered the impedance of grounding lead cable and the grounding wire connection methods has been proposed. 3 cases including conventional method are variously analyzed in 4 kinds of transient frequency...
Large Liquid Argon (LAr) Time Projection Chambers (TPCs) are becoming very attractive for long baseline neutrino and proton decay experiments because of their imaging capabilities and their excellent energy resolution. In the design of large LTPCs, with wire lengths of several meters (~5 m, and up to 10-20 m for proposed multi-kiloton detectors), the noise generated by the resistance of the wire needs...
High Tc superconducting (HTS) cables and their application to build a DC power transmission system with the advantages of high transport current capability and no resistive transmission loss have been studied. Technical assessments of the DC electrical power transmission system behaviors with the use of the HTS DC cable technology have been carried out. The HTS DC cable and its DC power transmission...
In order to achieve real-time remote data acquisition and display, an intelligent data acquisition system based on the Modbus communication protocol and RS-485 bus is designed, which is capable of gathering PT100 signals or the 4 ~ 20 mA industry standard signals. Its hardware system mainly consists of the MCU, the A/D converter, and the modules for communication, storage, power supply, I/O display...
The gigahertz frequency regime together with the rising delay of on-chip interconnect and increased device densities, has resulted in aggravating clock skew problem. Skew and power dissipation of clock distribution networks are key factors in determining the maximum attainable clock frequency as well as the chip power consumption. The traditional skew balancing schemes incur additional cost of increased...
This paper presents simulation and experimental testing being performed on electrical protection systems for Approach Lighting System (ALS) used in major US airports. The main focus of the investigations is to validate selected protection topology needed to safeguard critical Individual Control Cabinet (ICC) used by Federal Aviation Administration (FAA) in their ALS. The approach used is based on...
Memristor is a passive electronic device that was proposed and described by Leon Chua in 1971. The first practical implementation has been realized by Stan Williams' group at HP Labs in 2008. This paper is intended as a tutorial on how to use memristor crossbars for logic design and is a consolidation of various recent publications. The goal of this paper is to give the reader a brief introduction...
The purpose of this study is to provide a miniaturized volumetric folded dipole antenna with ideal electrical and mechanical characteristics such as broadbandness, good impedance matching, compactness (light weight, small sized, cheap), and rigidness; compared to other competitors such as biconical antennas and others. Our proposed antenna is competent at low frequencies especially in the HF range...
In summary we have demonstrated for the first time the fabrication and characterization of InSb NWFETs. Clear evidence of a small band gap semiconductor with device characteristics consistent with an Eg-value of around 160 meV to 180 meV have been provided using a simple yet novel data analysis. Our data can consistently be explained assuming two distinct regions in the device with one being a gate-independent...
Nanomaterials are becoming widely used in many commercial and consumer applications. The use of these types of materials has been studied in both the primary and secondary coatings as used in electrical insulation applications such as motors and transformers. It has been found that improvements in moisture resistance, abrasion resistance, pulse endurance survivability and flexibility are possible...
Usually skin effect is neglected in the design of medium speed machines when using random wound windings. That is because it is thought that parallel strands mix enough so that the skin effect can be neglected. In medium speed machines operating in the frequency range of 100 - 300 Hz the skin effect problem may come up in cases where the slots have only one or a couple of turns despite the fact that...
The scarcity of ore and environmental intensity of copper production creates a strong incentive to explore alternative materials for conducting electricity. Single-walled carbon nanotubes (SWCNT) rely on plentiful feedstock materials (i.e., graphite) and exhibit high theoretical conductivity on a per mass basis. However, bulk conductivities measured at the laboratory scale indicate further improvements...
Providing contact sensing on the whole body of a robot is a key feature to increase the safety level of physical human-robot interaction. In this paper, a new robot skin capable of sensing multiple contact locations is presented. The motivation behind the proposed design is to produce a relatively inexpensive skin having the capability to provide the spatial location of collisions and also to add...
A very new interconnection method, namely Cu lateral interconnection is proposed and tested for the heterogeneous multi-chip module integration in which MEMS and LSI chips are self assembled onto the flexible substrate. Here, the lateral interconnects runs between a few hundred microns thick chip and the Si or flexible substrates as well as at inter chip level. These Cu lateral interconnects were...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.