mosfet / IGBT rating?

Discussion in 'The Projects Forum' started by onlyvinod56, Mar 4, 2009.

  1. onlyvinod56

    Thread Starter Active Member

    Oct 14, 2008
    362
    1
    Hi.
    Iam designing a power inverter. It is a 3 phase inverter. Totally there must be 6 mosfets or IGBTs.

    The maximum current rating of the inverter is 8amps.
    The inverter line - line volateg is 415v rms.

    What should be the MOSFETs or IGBTs rating?

    and I need a diode that must be able to withstand for 415v and same 8 amps.
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    IGBT's usually have voltage ratings of 600 and up. If the inverter is line frequency, an IGBT is probably a good choice. I have found them in TO-247 with current ratings of better than 70 amps. International Rectifier and IXYS are good sources to search for devices.
     
  3. onlyvinod56

    Thread Starter Active Member

    Oct 14, 2008
    362
    1

    thank you beenthere. thanks for your fast response.
     
  4. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    It would be good to choose components with twice of the needed specifications. This will increase their life and cost somehow.
     
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