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IGBT Forum Discussions

CC9520
Level 1
10 sign-ins 5 sign-ins First reply posted
Level 1
Hi, all,

       Recently, i did an  IGBT VCE voltage stress test in  NPC 3-Level circuit. When the output is connected to PMSM, the VCE waveforms  changes in the initial  and  final stages ( the VCE waveform is not continuous during the rising  and falling phase ),please see the attchaed file, i couldn't understand its theory .   who can help to explain it for me ,thanks a lot.

NPC 3L.pngwave.png

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AZIZ_HASSAN
Moderator
Moderator 100 sign-ins 50 solutions authored 10 likes received
Moderator

Hi,

Thank you for posting on Infineon community.

To answer your query with proper explanation, i request you to share the Vge and collector current waveform along with the point where you are measuring the Vce voltage.

 

Best Regards,

AZIZ HASSAN

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AZIZ_HASSAN
Moderator
Moderator 100 sign-ins 50 solutions authored 10 likes received
Moderator

Hi,

Thank you for posting on Infineon community.

To answer your query with proper explanation, i request you to share the Vge and collector current waveform along with the point where you are measuring the Vce voltage.

 

Best Regards,

AZIZ HASSAN

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