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Newtron

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Posts: 6
Reply with quote  #1 
I have 5 of these (battery)

WB-LYP260AHA LiFeYPO4 (3.2V/260Ah)

https://www.ev-power.eu/Winston-40Ah-200Ah/WB-LYP260AHA-LiFeYPO4-3-2V-260Ah.html

And 3 0f these (panel)
KYOCERA KC 158G
http://www.pro-umwelt.de/solarmodul-kc-158g2-158wp-p-103.html?language=en

Was thinking of a mobile power station on a trailer
I have a fair bit of electrical experience but could really use some suggestions on where to go with the charge controller ,inverter and anything else I might need. Thanks

Rick H Parker

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Reply with quote  #2 
With them 3.2V cells your need to do a "12V" bank, to get an inverter, lithium charge controller and the batteries to play well together.
Your most likely be limited to four cells, unless one can find a 12V inverter that works in a voltage range of 12.5 - 19.0V, then you could use all five cells.

Your need a 12V 50A lithium Solar charge controller to manage the peak power of the three solar panels. This one looks up to the task, the lithium charge mode is user programmable.

How much power do you need from the inverter, how clean of waveform? ... If you don't know, start with what your going to be running with the inverter.

Also what country are you in?

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Rick H Parker
Kansas, USA
Electronics Engineering Technologist
Newtron

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Reply with quote  #3 
I appreciate that response

I'm thinking i will set everything up on a trailer to run power tools and lighting and sound equipment for the band- amps and pa stuff.keeping it all portable
would that charge controller also work to manage the batteries?
This is my first journey down a custom configuration and I am looking forward to having a better understanding on how components like inverters can be adapted.
sounds like it might be tough to find an inverter to work in the 19v range
Newtron

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USA
Rick H Parker

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Reply with quote  #5 
Band amps ... that a lot of power and energy. Right off the top of the head, your not going to be able to power a performance or a rehearsal with the equipment you have. 
To get an idea of what you would need to power the band. You tally up the power consumption of all the electrical equipment, lights ect and the amount of time, say the length of a show.

For audio equipment, you most definitely want a true sine wave inverter. A lower grade waveform can induce noise in the audio.

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Rick H Parker
Kansas, USA
Electronics Engineering Technologist
Newtron

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Reply with quote  #6 
USA
Newtron

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Reply with quote  #7 
Quote:
Originally Posted by Rick H Parker
Band amps ... that a lot of power and energy. Right off the top of the head, your not going to be able to power a performance or a rehearsal with the equipment you have. 
To get an idea of what you would need to power the band. You tally up the power consumption of all the electrical equipment, lights ect and the amount of time, say the length of a show.

For audio equipment, you most definitely want a true sine wave inverter. A lower grade waveform can induce noise in the audio.


Should probably given a better description.running  acoustic guitar amps ,light weight pa,and led lighting.probably between 10-15 amp draw cont. and  peak 20 amp at 110v.. would it make any sense to clean up sine wave after inverting as a lower cost solution?

Do you have a sense of equipment you would source for this project based on the cells and panels we have?
Thankyou
stmbtwle

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Reply with quote  #8 
Estimating the draw of equipment like that is difficult. If you have this amp and system now, I'd plug it into a "kill-a-watt" meter for an evening's show for your actual energy (kwh) usage, then add a margin, say 50%.
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Rick H Parker

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Reply with quote  #9 
between 10-15 amp draw cont. and  peak 20 amp at 110v.

I assume this is your totals.

Four cell battery bank: 260AH * 12.8V =  3328 watt-hours (832 watt-hours per cell)

10A * 110V = 1100W
20A * 110V = 2200W

3328 watt-hours/1100W = 3 hours
3328 watt-hours/2200W = 1.5 hours

The batteries alone would last between 1.5 - 3 hours, best guess is 2 hours. If you start off with fully charged batteries in the day, your get more time because of the addition power from the solar panels.


Inverter power would need to be 2500W, I would go at least 3000W.

would it make any sense to clean up sine wave after inverting as a lower cost solution?

It is better to tackle a problem at the root cause rather then do a band-aid fix. The cost of cleaning up the sine wave would be greater then getting a pure sine wave to begin with. What you want to watch for is Total Harmonic Distortion THD. The lower the better. This is a measurement of how dirty the wave form is, the lower the THD the better.

Do you have a sense of equipment you would source for this project based on the cells and panels we have?

A sense yes but, we are better then that. Lets try to tailor a solution towards your application. I would think sound quality is in the top of your list.
However you are on the low side in terms of resources, storage and panels.
Is there any chance you can get some more of them Lithium cells? There are a lot more options with 24V (8 Cells) and 48V (16 cells) battery banks.


I'm hoping to find a suitable
hybrid inverter, so that way everything will be in a neat package.
So far, Pure Sine Wave 2500 - 3000w inverter, at least 40A Lithium charge controller.



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Rick H Parker
Kansas, USA
Electronics Engineering Technologist
Newtron

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Reply with quote  #10 
Additional cells are a no go just have the 5 checked the voltage today all are right at 3.26.was actually surprised they were so close.

The load will not be daily and i think 2 hours of juice is pretty awesome.

My biggest first hurdle is figuring the additional equipment to make this work and manage the batteries ,is there an inverter that you might recommend sine/non-sine/?
we are also going to use it for powering tools and lighting at remote sites.
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