115V 400Hz Power Supply Circuit ?

Discussion in 'The Projects Forum' started by ibaltaci, Oct 15, 2010.

  1. ibaltaci

    Thread Starter New Member

    Oct 15, 2010

    Im a last year aviation student, avionics. For a big project I need to design a power supplies 115V 400Hz. So I need to convert 220v 50hz to 115v 400 hz. Im still searching and thinking on how to do it.

    I got some advicec that I need to rectify it to DC at first, then change freq. to 400hz and then invert it to AC again.

    What you think abt it? Can anybody help me, please ? How can I find or design this circuit?

  2. t06afre

    AAC Fanatic!

    May 11, 2009
    Google the term "inverter" that should give you something to start with. Your plan to go from AC to DC and to AC again sounds like the correct idea. But I am far from an expert on this. Just one tip. A transformer designed to work at 50 or 60 Hz may not work as expected at 400Hz
  3. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    What u need is PWM DC to DC Converter.
    But I don't think this is the case. 115V at 400Hz Sounds like a typical HV DC Motor Drive or a VFD Drive might help u
  4. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
    Rotary inverters used to be everywhere to go from 24 VDC to that specification. All you need is 110 VAC to 24 VDC. There is a good chance they will run on AC too. In which case, all you need s a 24VAC transformer (very cheap).

  5. marshallf3

    Well-Known Member

    Jul 26, 2010
    Exactly, just get a motor driven alternator or voltage inverter designed to operate avionics on the bench.

    400 Hz was brought on in the very early days of flight because it greatly reduced the weight of the power supply transformers necessary to operate the radios and navigation gear.

    WWII surplus may be your friend here.