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EG4 Chargeverter unofficial use!

romangeek

New Member
Joined
May 29, 2023
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39
Location
Maine
Does anyone know if the Eg4 chargeverter converts the AC input into DC right away? If so, it could be fed with unstable DC! And here is why I want to know…

I have an existing solar system, which includes a chargeverter in case I ever need to charge from generator. However, I have yet to use it... so it just sits there. I have lots of wind at times, especially when I have little solar. I had a sideloader washing machine that broke... that has a "built-in" 3 phase motor. The motor consists of a stator with many poles and wired in a 3 phase delta configuration. The rotor has many permanent magnets on it. I tried to use it as a generator, and it is perfect for that. So the question is, how do I wire it in a useful way into my system so it can charge my batteries?? The obvious answer is the chargeverter that is doing nothing at the moment. It could provide a safe and controlled way to charge LIPO4 batteries.

The reason for the original question "can the CV take DC?" was because in order for me to properly utilize the power, I have to take what is a 3 phase Delta generator and feed it into the CV! So if I add a bridge rectifier to the "generator" to rectify 3 phase delta, the CV should be able to make use of it. All this assumes the following... Since the CV can take such a wide range of voltage and even frequency, I assume that the CV really does not care (as long as I don't exceed 264 volts). This assumption is of course based upon the idea that they must convert to DC anyway and then use a PWM to regulate the voltage and current.

So, since I have never been able to get in touch with Tech Support at eg4electronics! I am requesting that the moderator at eg4electronics or SignatureSolar will actually ask the engineers if my assumptions are correct. Or perhaps one of you out there may have faced this already?? Any feedback would be appreciated!
 
I'm not 100% sure that I understand what you are asking. But I'm sure that the chargeverter converts the AC to DC first. And then all controls are on the DC side.
 
Depends how the internal rectifier modules work.
The data sheet for them does not list DC as an input option, therefore I would not attempt it.

This is what is inside my “old yeller”, not sure if they have upgraded since then,

The only way it can work is if the first device in the power path is a full-wave bridge rectifier.

More likely, they have inductors and inline capacitors to filter the input for EMI or power factor correction.
Capacitors do not pass DC.

Now if someone wants to take one apart and see….
 
It depends. Chargeverter is a Power Factor Corrected AC to DC power supply that regulates output.
Probably depends on the PFC implementation.
We have experimented with PFC SMPS and successfully fed them HV DC, getting 48V DC on the output with reduced harmonics of 60 Hz.

Wind generators will spin excessively fast in high wind, and under no load when battery fully charged. This causes excessive voltage.
Typically a shunt regulator is required, which burns off excess power. Midnight made the "Clipper" for that purpose.

What people have done successfully is charge batteries with a hydro plant made from washing machine motor.
 
Anyone know what the make and model of the telecom power supply modules is? I don't feel like taking mine apart!
 

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