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Forum Index : Electronics : Newbie looking for help

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justinh
Newbie

Joined: 16/09/2024
Location: United States
Posts: 2
Posted: 03:32am 18 Sep 2024
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Hi all, I've been doing some research on setting up a system here and eventually ended up on this site.  The projects here are very intriguing to me and I'd like to see if I could build something to suit my needs similar to what a lot of you guys are doing.

It seems like the wiseguy / nano setup may be the way to go.  I'm in the US. Would it be possible to set these up in a split phase configuration to run 120 / 240?

I would also be interested in a 3 phase 208v setup.
 
rogerdw
Guru

Joined: 22/10/2019
Location: Australia
Posts: 885
Posted: 01:52am 19 Sep 2024
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Welcome Justin. I don't think you could go far wrong building one of wiseguy's new design inverters  ...  especially now that it looks like you can double up on the transformers for massive output.

I'm planning on building one as a spare for my place.

KeepIS has been doing a massive amount of testing on them as well and the results are really impressive.

I've never really understood the split phase system you use over there but if it works the way I think it works, it's mainly a matter of winding the transformer/s to suit.

Tinyt is in the US and he's built an earlier ozinverter style device. Maybe have a bit of a search through his posts here in the back shed or over on the diysolarforum website.
Cheers,  Roger
 
phil99

Guru

Joined: 11/02/2018
Location: Australia
Posts: 2415
Posted: 03:24am 19 Sep 2024
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120 / 240V is just 2 x 120V windings in series with the neutral connected to the centre tap giving 120V on the two actives. 240V is available from active 1 to active 2.

No other modifications are needed. If the voltage sensing is connected to 240V ends that can be exactly the same too.
 
rogerdw
Guru

Joined: 22/10/2019
Location: Australia
Posts: 885
Posted: 04:57am 19 Sep 2024
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Thanks Phil, I should have known that but never really needed to think about it. So should be easily adaptable.

I occasionally visit the diysolarforum and am amazed at how little interest there is for diy electronics  ...  so maybe Justin can help get the ball rolling.  
Cheers,  Roger
 
justinh
Newbie

Joined: 16/09/2024
Location: United States
Posts: 2
Posted: 05:50am 19 Sep 2024
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Hopefully there are more boards available, I'll def give it a shot.
 
tinyt
Guru

Joined: 12/11/2017
Location: United States
Posts: 441
Posted: 01:33pm 19 Sep 2024
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Hi Justin, if any of your loads are line frequency dependent like synchronous motor timers, etc., avoid the EG8010 pwm controller. When jumpered for 60Hz, the frequency is  slightly higher than 60Hz.

Even though I don't have experience with it, the wiseguy/nano setup is a good choice.
 
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