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Forum Index : Electronics : Candidate transformers for Tverter

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LadyN

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Joined: 26/01/2019
Location: United States
Posts: 408
Posted: 07:22pm 07 Feb 2019
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Candidate transformers for Tverter (TonyInverter)

Warpspeed, you should really christen the Tverter or TonyInverter or WarpInverter or Warpverter or ...

Please, it will makes things so easy. I am sure naming OzInverter was they key to its success! Everything was just a cakewalk from there.

OK, so for people COMPLETELY unskilled in building transformers from scratch for the Tverter, we need to start somewhere.

This thread will capture the requirements for good candidate transformers for Tverter

To start off:

1. Will toroidal cores do just fine?
2. Why choose an EI over a toroidal core?
3. What changes in design would we have to do to the Tverter if we chose a toroidal core for the guts of the Tverter?
4. What are some good resources to get started with sourcing, building and testing transformers for Tverter?
 
JohnS
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Joined: 18/11/2011
Location: United Kingdom
Posts: 3802
Posted: 02:57pm 06 Apr 2019
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bump

I'll try:

1. yes
2. EI are easier to wind but nothing like as suitable for the higher power parts as toroids

Sorry if I got anything wrong.

John
 
Clockmanfr

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Joined: 23/10/2015
Location: France
Posts: 429
Posted: 04:13pm 06 Apr 2019
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'WarpStepInverter'

2019-04-07_021303_WarpstepInverter1to5.pdf

2019-04-07_021323_WarpStepInverter6.pdf
Everything is possible, just give me time.

3 HughP's 3.7m Wind T's (14 years). 5kW PV on 3 Trackers, (10 yrs). 21kW PV AC coupled SH GTI's. OzInverter created Grid. 1300ah 48v.
 
Warpspeed
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Joined: 09/08/2007
Location: Australia
Posts: 4406
Posted: 11:15pm 06 Apr 2019
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Exactly as John says, toroidal cores are better electrically, but require vastly more time and physical effort to wind.

My situation is that I had nothing here at all that I could use, either for the large toroidal cores, or wire of appropriate gauges. And I am becoming increasingly lazy in my old age.

And I also have a lifelong friend that runs a transformer winding business nearby.
So my solution was to get him to do the whole thing for me, although it was still a rather expensive exercise just for the cost of the materials.

Cheers,  Tony.
 
LadyN

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Joined: 26/01/2019
Location: United States
Posts: 408
Posted: 05:52pm 08 Apr 2019
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Are there some comprehensive (toroid) transformer winding videos or guides to follow?

I have never done this before and am scared with the unknowns.
 
renewableMark

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Joined: 09/12/2017
Location: Australia
Posts: 1678
Posted: 09:51pm 08 Apr 2019
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  LadyN said   Are there some comprehensive (toroid) transformer winding videos or guides to follow?

I have never done this before and am scared with the unknowns.

Here is something from Oz.
Cheers Caveman Mark
Off grid eastern Melb
 
LadyN

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Joined: 26/01/2019
Location: United States
Posts: 408
Posted: 09:57pm 08 Apr 2019
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YES MARK! YES!

Looks great! I will be studying this all week! WOOOHOO!

Can you believe it, I'm on that forum and have been going through the many pages but never found this post

THANK YOU!
 
Warpspeed
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Joined: 09/08/2007
Location: Australia
Posts: 4406
Posted: 11:31pm 08 Apr 2019
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I missed that one too, its an absolute ripper.............

One technique that has been modified since then, is the now preferred method to straighten the wire.
Every time copper wire is handled it tends to work harden, so the fewer times it is bent and unbent the easier it becomes to work with.

The multiple roller straightening technique certainly works, but a more gentle way is to just stretch the wire.

Anchor one end to an immovable object, and just stretch the wire. Perhaps about six to eight inches for a fifty foot length. You will feel it stretch, and it will not spring back, and all the ripples in the wire will straighten right out.

Cheers,  Tony.
 
tinyt
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Joined: 12/11/2017
Location: United States
Posts: 438
Posted: 11:57pm 08 Apr 2019
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Did the wire stetch from a post of the back side of the house to a temporary post at the end of the front driveway. I used a chain link fence puller and it works. Just make sure the wire does not rub on the cement surface and scrape it’s enamel. Lost some wires before I realized it.
 
renewableMark

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Joined: 09/12/2017
Location: Australia
Posts: 1678
Posted: 12:24am 09 Apr 2019
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even after a stretch it is never totally kink free. I use a wet leather glove and run it along the wire between my fingers and thumb, with them at an agle offsett to each other. That does work harden it a bit but not as bad as rollers.
Cheers Caveman Mark
Off grid eastern Melb
 
nickskethisniks
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Joined: 17/10/2017
Location: Belgium
Posts: 458
Posted: 09:54am 07 May 2019
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Hi,

Does someone know wich transformers are used in the diehl platinum 2100-4600s grid inverters? If they have the iron silicon steel toroidal transformers I can buy a few to dismantle them...
 
BenandAmber
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Joined: 16/02/2019
Location: United States
Posts: 961
Posted: 06:23pm 07 May 2019
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LadyN
I have wire stretched out right now in my yard

I tied it to the van my wife crashed and tied the other side to the hitch of her new used van

the wire was a little bit sketchy so I brought 3. 15 Oz cans of wire enamel paint and repainted it also

I stretch the wires one at a time

Then tied them off to anything heavy enough I could find including police car four wheeler milk crate with a bag of sand in it

Anything heavy enough to keep it off the ground so I can paint it





That's my youngest Sun (Zahyia) in that one pic he likes to do anything I'm doing and he is awesome at helping

He has his own toolbox and own tools and he can already take just about anything apart without my helpEdited by BenandAmber 2019-05-09
be warned i am good parrot but Dumber than a box of rocks
 
BenandAmber
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Joined: 16/02/2019
Location: United States
Posts: 961
Posted: 06:39pm 07 May 2019
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Yes for all of you that may be wondering I do have a junk car in my front yard I am from West Virginia what do you expect LOL
be warned i am good parrot but Dumber than a box of rocks
 
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