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Janmay
Level 2
Level 2
First like received 10 questions asked 10 replies posted

Hello,

Is snubber required for FF600R17ME4P FF600R17ME4P | 1700 V, 600 A dual IGBT module - Infineon Technologies.

The module is being used for Brake chopper application.

Please let me know, thanks.

Regards

Janamejaya

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1 Solution
Guru_Prasad
Moderator
Moderator
Moderator
50 likes received 250 replies posted 100 solutions authored

Hello Janmay,

Greetings from Infineon.

sorry for the late reply. expert AE is on leave so this much time.

If an application needs a snubber or not depends on the inductance on the dc-link connection. Usually a

simple snubber capacitor from DC+ to DC- is applied in cases when either the DC-link inductance of your

application is significantly bigger than in our characterization setup or the you has very small margin in

voltage. There is no need to consider inductance connected to the phase output. Therefore the inductance of

the brake resistor is of no relevance on the decision to add a snubber or not.

As long as the module used for the brake chopper is connected to a proper DC-link in the same way as the

modules in the inverter part  and there is no snubber needed in the inverter, there is no need for a snubber for

the brake chopper.

Please use the below paper for your reference ....

https://www.infineon.com/dgdl/Infineon-Snubber_Considerations_for_IGBT_Applications-Article-v01_00-E... 

 

Thank you

Guru

 

 

View solution in original post

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2 Replies
Guru_Prasad
Moderator
Moderator
Moderator
50 likes received 250 replies posted 100 solutions authored

Dear @Janmay 

Thanks for posting your question in the Infineon community.

Please share your converter power rating and regenerative energy.

FF series products are half bridge modules, may I know how are your integrating this module to your

brake chopper. 

please elaborate your system for our better understanding 

Thank your

Guru

0 Likes
Guru_Prasad
Moderator
Moderator
Moderator
50 likes received 250 replies posted 100 solutions authored

Hello Janmay,

Greetings from Infineon.

sorry for the late reply. expert AE is on leave so this much time.

If an application needs a snubber or not depends on the inductance on the dc-link connection. Usually a

simple snubber capacitor from DC+ to DC- is applied in cases when either the DC-link inductance of your

application is significantly bigger than in our characterization setup or the you has very small margin in

voltage. There is no need to consider inductance connected to the phase output. Therefore the inductance of

the brake resistor is of no relevance on the decision to add a snubber or not.

As long as the module used for the brake chopper is connected to a proper DC-link in the same way as the

modules in the inverter part  and there is no snubber needed in the inverter, there is no need for a snubber for

the brake chopper.

Please use the below paper for your reference ....

https://www.infineon.com/dgdl/Infineon-Snubber_Considerations_for_IGBT_Applications-Article-v01_00-E... 

 

Thank you

Guru

 

 

0 Likes