TheBackShed.com

Forum Index : Windmills : Best method for decogging and possibly rewiring this LG Direct Drive?

Author

Message

apbarratt

Newbie

Joined: 13/10/2020
Location: Scotland
Posts: 4

Posted: 01:04pm 07 Nov 2020

Copy link to clipboard

Print this post

Hi guys,

So happy to find a forum I can discuss this stuff, my wife is going a bit mad with me discussing it constantly!

My latest intense interest is wind power. I�m in the process of building a VAWT and put the call out in our community for anyone throwing out an old direct drive washing machine. Half an hour later I was pulling apart an LG one for all the electrical goodness inside :)

I�ve read a couple of articles (including on The Back Shed) about how I can decog this thing and possibly rewire it, but what I struggled to find was which method is best.

I like the twisting idea because it sounds like the least likely way to do irreversible damage, but maybe I�m misjudging this?

My aim is to charge a small bank of old 12v car batteries I�ve collected and wired in parallel. I then plan to use this in conjunction with an inverter for some things, and a DC step up board to attempt charging my electric motorbike.

I�ve bought myself a cheapy hybrid wind solar controller too.

I�m posting some pictures of the Direct Drive motor, but let me know if there�s more information I can provide that can�t be found in the images.

From what I can tell, the three phases are shorting in a single location, so I think this means it�s already wired in star configuration? Which I believe is helpful for low wind speeds?

Ready to learn here, but please note I don�t have any kind of degrees in electronics, so am learning on the go here :)

Andy

[insert witty signature here]

apbarratt

Newbie

Joined: 13/10/2020
Location: Scotland
Posts: 4

Posted: 03:44pm 07 Nov 2020

Copy link to clipboard

Print this post

I figured I�d do a quick go through some old topics that seem related to this motor (36 pole thingy:)

This one from 2017 seems to suggest that rewiring may not be needed and to test it in place. But there wasn�t much discussion on decogging.
http://www.thebackshed.com/forum/ViewTopic.php?FID=2&TID=9886

In 2018, there was some brief discussion on the topic of delta configurations which included an example that seems to have a DIY regulator:
http://www.thebackshed.com/forum/ViewTopic.php?FID=2&TID=10514
As my hybrid controller has 3 inputs for the wind turbine, I�m making the assumption that it will be handling regulation itself, so I will not need to go tracking down diodes and capacitors etc for that :)

2017, there seems to be someone by the name of @DaveP68 who is a real advocate for my 36 pole stator. I wonder if he�d be available to chat here in our dystopian future =D
http://www.thebackshed.com/forum/ViewTopic.php?FID=2&TID=9587

2011 saw this post about a 36 pole stator LG motor, but it also seems to mention 48 magnets in the rotor. Mine only has 12 by the looks of things, so I�m not sure how relevant this information would be for me.
http://www.thebackshed.com/forum/ViewTopic.php?FID=2&TID=3295

2016 A special mention to this topic just because it sings the praises of my country =D
http://www.thebackshed.com/forum/ViewTopic.php?FID=2&TID=8603

[insert witty signature here]

apbarratt

Newbie

Joined: 13/10/2020
Location: Scotland
Posts: 4

Posted: 04:09pm 07 Nov 2020

Copy link to clipboard

Print this post

Okay, I�m realising my mistake there. I see the magnet blocks each have 3 magnets in them. So 12x3 gives me 36 magnets, matching my 36 poles. Not sure if it�d be safe for me to put iron filings on them to see if they�re the �arrow shape� ones.

[insert witty signature here]

mad jack

Newbie

Joined: 26/06/2020
Location: United States
Posts: 11

Posted: 12:08am 11 Nov 2020

Copy link to clipboard

Print this post

The stator you have is wound with Alu. wire so it will be more difficult to rewire than a copper F&P, But I have done it. I used crimp caps with nal-ox ( anti-corrosion paste used with aluminum ac connections) So it will work but never give the output of a copper stator due to higher resistance of the alu.

Print this page

To reply to this topic, you need to log in.