Vehicles or freight cars on fire below a bridge or inside a tunnel are exceptional events and imply difficult intervention conditions for firefighters. A buried technical network like high voltage electricity line, gas or steam pipeline around such a fire causes additional specifics risks. Vulnerability areas for firefighters are defined as zones where both factors exist: a difficult incident a...

This work analyses the conducted EMI generated by an inverter-fed induction motor drive system with the pulse with modulation (PWM) as one of the most difficult current technical problem which limits power electronics drive's evolution. The analysis of the impedance characteristics of the converters load (motor and cable) is fundamental to interpret the common and differential mode of emission ...

The voltage-clamp technique is applicable only to spherical cells. In nonspherical cells, such as neurons, the membrane potential is not clamped distal to the voltage-clamp electrode. This means that the current recorded by the voltage-clamp electrode is the sum of the local current and of axial currents from locations experiencing different membrane potentials. Furthermore, voltage-gated curre...

A novel servomotor design that is powered and controlled through only one wire is presented in this paper. A traditional servomotor needs both a power cable and a control cable connecting the motor to a control amplifier. Cables are bulky, heavy, and expensive and, more importantly, difficult to install and maintain in many applications. Particularly for multi-axis applications, like robots and...

Estimates are that more than half of all electricity in China powers motors. The traditional mechanical control scheme wastes half of the electricity it uses. Inverterbased, variable-speed-drive designs can save most of these losses. Advancing the adoption of inverter-based variable speed drives requires finding a means to achieve mechanical simplicity while maintaining the performance necessar...

High voltage (HV) cables are widely used in the transmission and distribution of electrical energy. The design manufacture these with great precision importance for power systems. Mistakes made during manufacturing phase defects that may occur structure cable material can cause premature aging continuous malfunctions cables. Factors such as air gaps, foreign substances, moisture insulating punc...

In order to meet the requirements of cable fault detection, a new structure of piezoelectric accelerometer was designed and analyzed in detail. The structure was composed of a seismic mass, two sensitive beams, and two added beams. Then, simulations including the maximum stress, natural frequency, and output voltage were carried out. Moreover, comparisons with traditional structures of piezoele...

Seafloor observation system using the underwater telecommunication cable is one of the most reliable ways to secure high-speed data transmission and continuous power feeding to underwater devices. In this paper a new scientific submarine cable system will be presented that were proposed by the technical committee organized by IEEE OES (Institute of Electrical and Electronics Engineers, Oceanic ...

Power cables that have sheaths, usually lead, and are manufactured with bitumen impregnated hessian which degrades over time, act as long grounding electrodes or inject fault current directly into the surrounding soil. As a consequence of this, the MV lines made of this type of cable spontaneously form a very large and complex grounding system around the high-voltage/medium-voltage (HV/MV) dist...

exergy analysis of an integrated molten carbonate fuel cell-turbo expander-steam turbine hybrid cycle has been presented in this study. the proposed cycle has been used as a sustainable energy approach to provide a micro hybrid power plant with high exergy efficiency. to generate electricity by the mentioned system, an externally reformed molten carbonate fuel cell located upstream of the combi...