Maher Kayal

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A 120 dB dynamic-range radiation-tolerant charge-to-digital converter for radiation monitoring

Maher Kayal, François Krummenacher, Bernd Dehning

We present a radiation-tolerant 120 dB dynamic-range interface circuit for ionization chambers and diamond detectors. The device consists of a multi-scale continuous-time incremental charge-to-digital converter paired with a temperature-compensated current ...

Elsevier2013

Generator coherency identification algorithm using modal and time-domain information

Maher Kayal, Theodoros Kyriakidis

Coherency group identification is an integral constituent part of the wider field of reduction techniques in power systems. It consists of separating the machines in the system into groups that feature similar behavior. This paper presents a coherency iden ...

IEEE2013

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Transient Stability Assessment (TSA) is the process in which the stability of a system is characterized qualitatively or quantitatively. The TSA algorithm presented in this paper is derived from the well-established Single Machine Equivalent (SIME) method ...

IEEE2013

Power network transient stability electronics emulator using mixed-signal calibration

Maher Kayal, Georgios Lilis, Laurent Fabre, Theodoros Kyriakidis, Guillaume Olivier Lanz, Denis Sallin

The emerging field of power system emulation for real time smart grid management is very demanding in terms of speed and accuracy. This paper provides detailed information about the electronics calibration process of a high-speed power network emulator ded ...

2013

On-chip Mass Sensing at the Physical Limits of Nanoelectromechanical Systems

Maher Kayal, Marc Pastre, Christian Kauth

A tunable and self-regulating on-chip carbon nanotube based mass balance is presented for small-size and low-cost environmental and healthcare applications. Tube stretching and a phase-locked loop topology make the system widely universal and invariant to ...

Ieee2013

System-Level Design Considerations for Carbon Nanotube Electromechanical Resonators

Maher Kayal, Jean-Michel Sallese, Marc Pastre, Christian Kauth

Despite an evermore complete plethora of complex domain-specific semiempirical models, no succinct recipe for large-scale carbon nanotube electromechanical systems design has been formulated. To combine the benefits of these highly sensitive miniaturized m ...

Hindawi Publishing Corporation2013

Comparative Study on the Performance of Five Different Hall Effect Devices

Maher Kayal, Jean-Michel Sallese, Maria-Alexandra Paun

Five different Hall Effect sensors were modeled and their performance evaluated using a three dimensional simulator. The physical structure of the implemented sensors reproduces a certain technological fabrication process. Hall voltage, absolute, current-r ...

Mdpi Ag2013

High-Speed Power System Transient Stability Simulation Using Highly Dedicated Hardware

Maher Kayal, François Krummenacher, Marc Pastre, Laurent Fabre, Ira Nagel

This paper presents a fully analog demonstrator based on power system emulation for high-speed power system stability analysis.Abenchmark using a fixed two-machine topology has been implemented. The characteristics of the emulated components (i.e., generat ...

Ieee-Inst Electrical Electronics Engineers Inc2013

A Circuit Model for CMOS Hall Cells Performance Evaluation including Temperature Effects

Maher Kayal, Jean-Michel Sallese, Maria-Alexandra Paun

In order to provide the information on their Hall voltage, sensitivity, and drift with temperature, a new simpler lumped circuit model for the evaluation of various Hall cells has been developed. In this sense, the finite element model proposed by the auth ...

Hindawi Publishing Corporation2013

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The present paper focuses on evaluating the temperature effects on Hall Effect sensors sensitivity behavior. To this purpose, an analysis of the factors affecting the sensors current-related sensitivity is performed, consisting of several pertinent conside ...

Springer US2013