BJT application expansion by insertion of superjunction

International audienceIn this paper, some high voltage Bipolar Junction Transistors are presented and compared in order to suggest a switch for household appliances with fully turn-on, turn-off control. For the first time, a comparative theoretical study, using 2D simulations, shows that concepts like the "superjunction" improve the static behaviour of conventional BJT. These new structures are compared with a SJMOSFET and an IGBT. The new BJT exhibits lower static losses than SJMOSFET and gives up an interest in bipolar structure

Modélisation des disjoncteurs domestiques dans la bande CPL

Les études portant sur l'impact des éléments de protection du réseau électrique domestique sur les signaux CPL (courant porteur en ligne) manquent. Ce travail investigue l'effet des disjoncteurs domestiques dans la bande CPL. Avec un analyseur de réseau, les pertes d'insertion (paramètres S21) d'une dizaine de disjoncteurs de différents calibres et fabricants ont été mesurées. D'une part, l'atténuation des disjoncteurs dans la bande bas débit (9kHz-500 kHz) est faible. D'autre part, ils induisent une atténuation importante dans la bande haut débit (1MHz-100MHz). Ces pertes dépendent surtout du courant nominal et du type de disjoncteur (branchement, différentiel, divisionnaire). En tenant compte de leur structure, un circuit électrique équivalent des disjoncteurs est proposé et validé en comparant les simulations aux mesures. Ce circuit pourra être intégré dans un simulateur CPL

Étude et développement d'un convertisseur réversible adapté aux applications HEMS

International audienceÉtude et développement d'un convertisseur réversible adapté aux applications HEM

Analysis of Electrical stresses in AC Switches Used for Control of Small Power Motors Present in Household Appliances

This paper describes a study on electric and thermal stresses induced in bidirectional switches used for control of small power motors present in household appliances, in order to find out the possible weakness of the current solution generally made of a triac and to determine the requirements for new dedicated devices in the ASDTM technology. First, a behavioral analysis of these motors must be performed and the interactions between the switch and the load have to be well defined

A Method to Construct Equivalent Circuit from Input Impedance of Household Appliances

International audienceBroadband Power Line Communication (PLC) technology is one of the main parameters of digital convergence voice-data-video in the home environment. Such technologies use the power line network as propagation and communication medium. Its transmission quality depends on the frequency behavior of the propagation medium and the connected household electrical appliances. The impedance of those devices and the noise levels have a great impact on the PLC systems. For some devices, the impedance is different in operating state and non operating state. For other devices the impedance in operating state varies in time. The time variation of these impedances induces a cyclic time variation of indoor power-line channels. In this paper, more than a hundred different household appliances are measured, belonging to electronic, electric motor, refrigerating and electric heating appliances. The impedance of each device is modeled by an equivalent RLC circuit. The equivalent circuit is deduced from the frequency response of the measured impedance using a genetic algorithm based method. The equivalent model is passive and can be simulated in both time domain and frequency domain. Performance of the genetic algorithm based method has been confirmed by several case studies

Characterization of Coupled Transmission Lines Used in Integrated Circuit Packaging on Printed Circuit Boards

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Electromagnetic Coupling Modeling of Microstrip Lines Used in Switching Power Supplies

International audienceOne of the major problems in electromagnetic compatibility is the interference due to crosstalk on the PCB (printed circuit board) in the SiP (system-in-package) technology. In this work, electromagnetic coupling modeling of coupled microstrip lines used in switching power supplies is presented. The different blocks which are connected through buses realized on PCBs will be considered as a coupled transmission line. The coupled microstrip transmission lines are modeled by a mathematical model based on the MoM (method of moments). This model is done by Matlab routines. A SPICE (simulation program with integrated circuit emphasis) model is proposed for the prediction of the NEXT (near-crosstalk) and the FEXT (far-crosstalk) at the terminals of the command line. This command line is often victim of electromagnetic interference emitted by a transmission line source close. Some solutions against crosstalk depending on the physical parameters of the coupled transmission lines are proposed

Indoor Narrowband Power Lines Channel Characterization

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Chapter 5 - Making Inverters for Domestic Photovoltaic Applications More Robust: The Relevance of a Mixed 5-level Topology

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AMELIORATION DE DEBIT CPL AVEC FILTRAGE ET ETUDE D'IMPEDANCE

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