METHOD FOR PROTECTING THE COMPONENTS OF A POWER ELECTRONICS MODULE OF A STARTER-ALTERNATOR SYSTEM, AND SYSTEM IMPLEMENTING THIS METHOD

The invention relates to a method for protecting the components of a power electronics module of a starter-alternator system for a vehicle, said starter-alternator system having a control module able to control the power electronics module, wherein the supply current of the power electronics module...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	GRANZIERA, Cyril, BLONDEL, Bastien, GUILLERM, Baptiste
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING COMBUSTION ENGINES CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDEDFOR STARTING OF COMBUSTION ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to a method for protecting the components of a power electronics module of a starter-alternator system for a vehicle, said starter-alternator system having a control module able to control the power electronics module, wherein the supply current of the power electronics module is cut when, during a starting phase of the vehicle, a temperature (Tjunction) of at least one of the components of said power electronics module is determined as being greater than a predefined threshold temperature value, said component temperature being determined by estimation using the formula: Tjunction = Tleadframe + ∆T, where Tleadframe is the temperature of the substrate on which said power electronics component is mounted and ∆T is a temperature variation induced in the power electronics component by the flow of current in said component during the starting phase.