Concept

Phaseur

Publications associées (103)

Phase–frequency detecting time-to-digital converter

A simple time-to-digital converter (TDC), capable of detecting not only phase difference but also frequency difference, is presented. The proposed TDC guarantees pull-in even for PLLs with the lowest loop gain. The TDC is fabricated in a 65 nm CMOS process ...

2009

Simultaneous Power Deposition Detection of Two EC Beams with the BIS Analysis in Moving TCV Plasmas

Timothy Goodman, Jean-Marc Moret, Federico Alberto Alfredo Felici, Joan Decker, Antoine Pochelon, James Paley, Loïc Curchod

Modulation of power amplitude is a widespread to determine the radial absorption profile of externally launched power in fusion plasmas. There are many techniques to analyze the plasma response to such a modulation. The break-in-slope (BIS) analysis can dr ...

AIP Conference Proceedings2009

Analysis of Empirical Core Loss Evaluation Methods For Non-Sinusoidally Fed Medium Frequency Power Transformers

Alfred Rufer, Frédéric Zurkinden, Irma Villar

Nowadays medium voltage conversion systems, like traction and energy distribution systems, aim to increase power density. Volume, weight and material reduction are gaining the market today. Due to the development of new high power semiconductor devices a n ...

2008

A Space Vector PWM Scheme for Multifrequency Output Voltage Generation With Multiphase Voltage-Source Inverters

Drazen Dujic

Multiphase variable-speed drives, supplied from two-level voltage-source inverters (VSIs), are nowadays considered for various industrial applications. Depending on the drive structure and/or the motor design, the VSI is required to generate either sinusoi ...

Institute of Electrical and Electronics Engineers2008

Tag-Trigger-Consolidation: A Model of Early and Late Long-Term-Potentiation and Depression

Wulfram Gerstner, Eleni Vasilaki, Claudia Clopath, Lorric Ziegler

Changes in synaptic efficacies need to be long-lasting in order to serve as a substrate for memory. Experimentally, synaptic plasticity exhibits phases covering the induction of long-term potentiation and depression (LTP/LTD) during the early phase of syna ...

Public Library of Science2008

Continuous PWM Techniques for Sinusoidal Voltage Generation with Seven-Phase Voltage Source Inverters

Drazen Dujic

Multi-phase motor drives are typically supplied from two-level voltage source inverters (VSIs). It is thus necessary to develop pulse width modulation (PWM) schemes for inverter control in order to utilise the benefits offered by multiphase motor drives. T ...

IEEE2007

New self-switching mechanisms for active bidirectional switches

Alfred Rufer, Philippe Barrade, Daniel Siemaszko

The self-switching principle is a synthesis of synchronous type switching and switch inner protection mechanisms. Both switch ON and switch OFF are performed on the base of current and voltage measurement across the switch. Applied to an active bidirection ...

2007

A Numerical Test Platform for Large Synchronous Machines also useful as a Design Optimization Tool.

Jean-Jacques Simond, Mai Tu Xuan

This paper deals with the determination of large synchronous machine characteristic quantities using an extended 2D-finite element method and based on the knowledge of the geometry and of the physical properties of the electrical and magnetic circuits of t ...

2006

Mean-field theory revives in self-oscillatory fields with non-local coupling

A simple mean-field idea is applicable to the pattern dynamics of large assemblies of limit-cycle oscillators with non-local coupling. This is demonstrated by developing a mathematical theory for the following two specific examples of pattern dynamics. Fir ...

2006

Electric-field-, temperature-, and stress-induced phase transitions in relaxor ferroelectric single crystals

Nava Setter, Dragan Damjanovic, Matthew Davis

Electric-field-induced phase transitions have been evidenced by macroscopic strain measurements at temperatures between 25 degrees C and 100 degrees C in 001-poled (1-x)Pb(Mg1/3Nb2/3)O-3-xPbTiO(3) [(PMN-xPT);x=0.25,0.305,0.31] and (1-x)Pb(Zn1/3Nb2/3)O ...

2006

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