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JUAIAM

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  1. JUAIAM

    Damaged Igbt

    Really is a very rare phenomenon, because the system has protection for overvoltage, we do not know that it can cause breakage.
  2. JUAIAM

    Damaged Igbt

    Thanks for your reply. I attached a photo of the semiconductor as extracted. Maybe it is useful. We also suspect that outside overvoltage. Since the formations using regenerative brake and does not rely on the substation. Likewise if there are surges have not been observed with the voltimeter. Could affect the IGBT, overvoltage peak of short time? Thanks again and excuse my grammatical errors, I use a web translator. http://img91.imageshack.us/img91/7928/02022009134pu3.th.jpg
  3. JUAIAM

    Damaged Igbt

    I hope that you can access the image http://img111.imageshack.us/my.php?image=02022009139jk8.jpg " target="_blank"> http://img111.imageshack.us/my.php?image=02022009139jk8.jpg
  4. JUAIAM

    Damaged Igbt

    Hi, I'm Argentine and work in railways maintenance. My query is: Lately we have had repeated breakdowns in the power module of VVVF inverters, with the breaking of many IGBTs. If sending pictures of IGBT damaged, you can know that may have caused the breakage, overvoltage or overcurrent? thank you very much!
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