Connect with us

Cheap Home Generator Questions

Discussion in 'Electronic Basics' started by jaydee, Aug 10, 2004.

Scroll to continue with content
  1. jaydee

    jaydee Guest

    I am building a generator using multiple auto alternators and
    understand (I think) that wiring them in parallel will combine the
    amps but leave the volts the same. Is this true? I plan to then
    invert to AC and step up the voltage with a transformer.

    However, I have read that alternators actually generate AC and then
    invert to DC to send the current to the battery. If so, can I
    disconnect this function and then skip the need for an AC inverter?

    Thanks for your replies and help,
  2. dan

    dan Guest

    What's that Lassie? You say that jaydee fell down the old
    sci.electronics.basics mine and will die if we don't mount a rescue by
    10 Aug 2004 11:32:44 -0700:
    This is true, but one will likely hog all the load unless they share
    one regulator. You may be able to wire the field coils in series and
    use one regulator. The alternators will have to be identical, and
    driven at the same speed.
    Yes, you can. But the output will be three phase, and at a much
    higher frequency than household AC. And with more than one
    alternator, you will need separate transformers, due to the
    alternators not being in phase with each other.

    You could make/buy a regulator that will let you get higher voltages
    from a standard auto alternator. And you can get inverters that will
    use that voltage to make AC. Last I saw, you could get large
    inverters that take in 48 VDC, and output 240AC.

    You might want to find a booklet called "alternator secrets"
  3. jaydee

    jaydee Guest

    Thanks Dan,

    Looks like I need a little more research and study. I will look into
    the regulator issue and try to find the book you mentioned.

    The alternators are the same and will be driven off the same belt so
    they will be in sync. Sounds like I should let them gen DC and then
    invert instead of the complicated disconnect of that alternator

    Thanks again
  4. Norman Webb

    Norman Webb Guest

    They will nominally be at the same frequency barring differences in
    effective pulley diameter but they wouldn't necessarily be in sync. ie the
    AC crossover points would vary.

    Sounds like I should let them gen DC and then
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day