Design and construction of 1.5kva power inverter transformer

can someone help on how to design and construct 1.5KVA ,230v transformer for power inverter , i need details on number of turns, wire gauge , lamination and any theory associated with winding of mentioned transformer.

Here is a link to a thread discussing this. Among the factors which you'll need to consider are frequency, incoming current, outgoing current, what waveform is going in, what waveform you want as output, etc.

https://www.edaboard.com/threads/229615/

What input voltage you plan to put on input of this inverter?

Am planning to use 12v deep cycle battery for the inverter
Thanks (am sorry for late reply)

Can your battery handle around 125A current at max load or 42A at 1/3 of load ?

Deep cycle cant handle high current load, specially at start, and usually they have capacity and discharge rate declared with 1/20.

Deep cycle batteries in inverter or solar systems are often used in groups called battery banks.

Starter batteries in other hand is different story.

can someone help on how to design and construct 1.5KVA ,230v transformer for power inverter , i need details on number of turns, wire gauge , lamination and any theory associated with winding of mentioned transformer.

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Hi Abbey
I think you can find what you need , here :
https://www.edaboard.com/threads/229615/
Best Wishes
Goldsmith

Hi Goldsmith

I really appreciate your suggested thread i need more explanation on the following ;
number of winding,
current ,
how to determine the size of lamination and i want to use EI type laminated iron core, also size of wire gauge on
both primary and secondary. My transformer specification are 1.5kva/24v at primary ,240vac at secondary centered tapped transformer
thanks

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Hi tpetar
what type of batterry do u suggest that we be 0k, am try to change to 2x12v duty cycle battery with 200AH

Hi Goldsmith

I really appreciate your suggested thread i need more explanation on the following ;
number of winding,
current ,
how to determine the size of lamination and i want to use EI type laminated iron core, also size of wire gauge on
both primary and secondary. My transformer specification are 1.5kva/24v at primary ,240vac at secondary centered tapped transformer
thanks

Click to expand...

Hi Abbey

May i ask you a question , please ? why iron core ? i hope you know that for 1.5 kva iron core transformer you'll need at least EI170 ! wow ! what a large and heavy and expensive transformer , is that !!
As i understood you're going to make an inverter . right ? if so , why not a switching inverter ? ( DC link inverter ) which will deliver higher powers in lower sizes and prices . and better efficiency .

However i can help you in both manners .

Best Wishes
Goldsmith

Abbey80 said:

Hi tpetar
what type of batterry do u suggest that we be 0k, am try to change to 2x12v duty cycle battery with 200AH

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You dont have appropriate battery bank for 1,5KW and battery voltage bank is not good for that power.

This is theoretical calc :
200Ah / 24V = 63A
200Ah / 63 = 3,17h (battery bank should not be discharge faster then 10h. If you use deep cycle then C/20).



Your battery bank is for max 500W.

500W / 24V = 21A
200Ah / 21A = 9,53h

We speak about 200Ah of fresh and new battery.



People often neglect the most important things in such systems. :wink:

You have bad designed system or plan to have. Even in case of 400Ah batteries this is bad. Appropriate voltage of system is very important. Respect battery capacity and capabilities, and use manufacturers data for reference.


Two types of batteries :

Starter lead acid - Discharge max 30% for longer life (30% capacity for cycling) C/10, and capacity is given for C/10.
Deep Cycle lead acid - Can be discharged completely to 10,5V, but max current is C/20, and capacity is given for C/20.

If their is any way u can assist on that E I iron core transformer with the specification earlier mentioned i will appreciate it.
Have seen it once but i was not involved in the turn ratio calculation, determining of wire gauge and other things that associated
with winding of transformer . Switching inverter (DC link inverter) is very interesting but have not got much idea on that now. Thanks

You can use some calc software to save time.



http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/transf.html

Hi Tpetar,there is a mistake in that calc:1500w/24v =63 not 200AH/63.I reay enjoy your comment

kyrietec said:

Hi Tpetar,there is a mistake in that calc:1500w/24v =63 not 200AH/63.I reay enjoy your comment

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Yes, you are correct, I make mistake.

Thank you.