refroidissement pont de diode et IDBT

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Visiblement sur toutes les plaques a induction on a des montages semblables

un pont de Diodes suivi de 4 IGBT...





raison ?

Re: refroidissement pont de diode et IDBT

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Je pense que ce que tu prends pour du carton, est une  interface  




Chab

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Comment sait-on que c'est une  interface isolante de transfert thermique  
? Comment on test ?




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Re: refroidissement pont de diode et IDBT
CUT ..


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de contact n'est pas parfaitement lisse ou rectiligne, voir rugueuse.
Il faut savoir qu'entre deux surfaces "rugueuse" la surface de contact  





de contact, mais aussi l'environnement, et le transfert thermique avec  








de te faire suer.

https://fr.aliexpress.com/item/32704781394.html?spm=a2g0o.productlist.0.0.4055682bOhtisG&s=p

Crdlt
Chab


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https://www.le-sav.com/24210-large_default/carte-de-puissance-pour-plaque-induction-scholtes.jpg

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pads.


dissipateur ou pas, dans ce dernier cas il ne peut ne pas y avoir



panne :-/

Bref, dans tout les cas on ne peut pas remplacer un pad par de la

construction.
--  
pas de turlututu. apres l'@robase

Re: refroidissement pont de diode et IDBT
Le Mon, 20 Jan 2020 07:09:34 +0100,

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    JKB

--  


=> http://grincheux.de-charybde-en-scylla.fr
=> http://loubardes.de-charybde-en-scylla.fr

Re: refroidissement pont de diode et IDBT

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C'est bien ce qu'il me semblait avoir compris toutes les plaques sont  

IGBT

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importance et dans le doute vaut-il mieux mettre - que + ?






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Pour la graisse thermique si c'est un pad rigide style mica, il vaut  



surfaces lisses, comme les semelles de transistors TO3 par exemple. D'un  





indications.

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1MM; Thickn

Chez Farnell ref 2902531

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le comportement des IGBTs voisins ?

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changer le thermal pad

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existait en petit rouleau...

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Re: refroidissement pont de diode et IDBT

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Visiblement non pas toujours. Pour des puissances domestique 2/3KW il y  


Le pont de diode complet (Graetz) redresse et surtout pas de capa de  

les diodes du pont et le condensateur souffrent ENORMEMENT pendant  
l'angle de fermeture avec des courants de tramway ...






pfff!)
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