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Home > Archive > Electrical Engineering > April 2006 > Power inverter / alternator
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Power inverter / alternator
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| humbleFunGuy 2006-04-22, 6:21 pm |
| Hello,
I am experimenting with an alternator and Power inverter. I have a
2000W continous/4000W max surge power inverter. What spec alternator
should I use to connect to it?
Can I connect inverter to an alternator?
I have access to an alternator that is rated for 75A/90A current @12V.
Thanks,
fanzi
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| calhoun 2006-04-22, 8:21 pm |
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"humbleFunGuy" <imohammed786@hotmail.com> wrote in message
news:1145739881.657364.129280@j33g2000cwa.googlegroups.com...
> Hello,
> I am experimenting with an alternator and Power inverter. I have a
> 2000W continous/4000W max surge power inverter. What spec alternator
> should I use to connect to it?
>
> Can I connect inverter to an alternator?
>
> I have access to an alternator that is rated for 75A/90A current @12V.
>
> Thanks,
> fanzi
>
To get 2000 watts with 12 volts you need about 160 amps. Your small
alternator will not keep up. You will need to connect to a battery and use
the alternator to charge the battery. You will not be able to use the
inverter continuously. You will need to hook up large wires from the battery
to the inverter to carry the current. I have a similar inverter in my work
truck. Hooked up to an isolated battery with welding cables. Battery is
charged with a 145 amp alternator.
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| humbleFunGuy wrote:
> Hello,
> I am experimenting with an alternator and Power inverter. I have a
> 2000W continous/4000W max surge power inverter. What spec alternator
> should I use to connect to it?
>
> Can I connect inverter to an alternator?
Probably not! Depends in part on what range of input voltage the
inverter was made to handle. Depends also on whether the alternator has
an internal regulator, and what voltage it is set for.
Some inverters are designed to operate only on "filtered DC" as from a
battery. Others may work on the rectified AC output of an alternator.
Safest bet is to operate the inverter from a battery, using the
alternator to charge the battery, as suggested in the previous post.
Good luck.
Chuck
>
> I have access to an alternator that is rated for 75A/90A current @12V.
>
> Thanks,
> fanzi
>
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| calhoun 2006-04-23, 8:21 am |
|
"chuck" <nospam@nospam.net> wrote in message
news:H6z2g.7499$Es3.4503@newsread3.news.atl.earthlink.net...[color=darkred]
> humbleFunGuy wrote:
>
> Probably not! Depends in part on what range of input voltage the inverter
> was made to handle. Depends also on whether the alternator has an internal
> regulator, and what voltage it is set for.
>
> Some inverters are designed to operate only on "filtered DC" as from a
> battery. Others may work on the rectified AC output of an alternator.
>
> Safest bet is to operate the inverter from a battery, using the alternator
> to charge the battery, as suggested in the previous post.
>
> Good luck.
>
>
> Chuck
>
>
I would also like to add. I don't think an alternator will work without a
battery. It needs some current to energize the magnetic field. Try it, but I
think you can spin it all day and not get an output without a battery hooked
up.
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