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Author Topic: 170 watts in - 1600 watts out - looped - Very impressive build and video  (Read 224020 times)

gotoluc

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Re: 170 watts in - 1600 watts out - looped - Very impressive build and video
« Reply #225 on: March 12, 2018, 10:09:14 PM »
I found a parted 2 stroke gasoline AC generator in the lab space I have free use of. So I took it apart to see how many poles (slots) the stator has, see video:  https://youtu.be/iYullLkW9rc
If anyone is ready to buy the Dual H Bridge L298N Module and have them shipped directly to me I'll provide most everything else and build the test device.
I found the L298N Module in stocked in the US and you get 5 for $9.95 including delivery: 
https://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&toolid=11800&pub=5574900467&campid=5338252492&mpre=https%3A%2F%2Fwww.ebay.com%2Fitm%2F222461752336%3FrmvSB%3Dtrue

I think I need 20 of those boards so you're looking at a $39.80 expense to find out if this works.
Any person interested buying those please send me a PM asap.
I live off $100. a week so I can't do that much more other then provide everything else I have access to for free.
Also, I need someone to write the program for the Parallax Propeller P8X32A  #40000 (quickstart) micro-controller board which I think can do the same job as the Arduino but I need someone knowledgeable with these controllers to confirm that.

Looking forward in the support and participation of others

Thanks

Luc
« Last Edit: March 12, 2018, 10:18:40 PM by hartiberlin »

hartiberlin

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Re: 170 watts in - 1600 watts out - looped - Very impressive build and video
« Reply #226 on: March 12, 2018, 10:26:10 PM »
Hi All,
I made a video out of the simulation user pmgr has done and posted it on youtube so you can see it much more easily as it was
a pain to extract the animated GIF file.
Here it is.
Many thanks to user pmgr for this great flux density animation.

https://www.youtube.com/watch?v=bVARO4DH8uU

Regards, Stefan.

gotoluc

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Re: 170 watts in - 1600 watts out - looped - Very impressive build and video
« Reply #227 on: March 12, 2018, 10:33:08 PM »
Thanks Stefan for making that video.

Please check if Pierre (pedro1) can post. He mentioned he tried and got a message like moderator or something.

Regards

Luc

pmgr

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Re: 170 watts in - 1600 watts out - looped - Very impressive build and video
« Reply #228 on: March 12, 2018, 11:34:31 PM »
Hi All,
I made a video out of the simulation user pmgr has done and posted it on youtube so you can see it much more easily as it was
a pain to extract the animated GIF file.
Here it is.
Many thanks to user pmgr for this great flux density animation.

https://www.youtube.com/watch?v=bVARO4DH8uU

Regards, Stefan.
Stefan, my pleasure. Btw. you should have told me you were trying to decompile the animated GIFs. I could have simply sent the frames to you :-)


I did some more updated animations this weekend. Let me know if there is a better way to get these out. The forum appears to corrupt animated GIFs and even zip files. Hope you can find a fix for that.


PmgR

gotoluc

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Re: 170 watts in - 1600 watts out - looped - Very impressive build and video
« Reply #229 on: March 12, 2018, 11:38:27 PM »
User name partzman has already purchased the L298N boards and the Arduino Mega 2560 as well.
He will send all to me once he receives it somewhere around March 19th.
Thanks partzman for your help and support.

Kind regards

Luc

pmgr

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Re: 170 watts in - 1600 watts out - looped - Very impressive build and video
« Reply #230 on: March 12, 2018, 11:40:16 PM »
Lets take that 180W as a worst case, so 180W/21V= 8.57A average  .. 8.57A/12 coils on at any time (assuming overlapping on periods) = 0.71A average per coil.
L192
L192, why are you saying 12 coils are on at any time? Only 6 blue LEDs are on at any time, so that would only be 6 coils on at a time (but 12 relays on to turn those 6 coils on). So current per coil would be 1.42A.



PmgR
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listener191

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Re: 170 watts in - 1600 watts out - looped - Very impressive build and video
« Reply #231 on: March 12, 2018, 11:49:48 PM »
Hi PmgR,

In a previous post, Pierre stated that he switches the next coil on before turning off the previous coil so that makes 12 coils ON.

Regards

L192

listener191

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Re: 170 watts in - 1600 watts out - looped - Very impressive build and video
« Reply #232 on: March 12, 2018, 11:50:41 PM »
Post 2861

pmgr

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Re: 170 watts in - 1600 watts out - looped - Very impressive build and video
« Reply #233 on: March 13, 2018, 12:32:28 AM »
Hi PmgR,

In a previous post, Pierre stated that he switches the next coil on before turning off the previous coil so that makes 12 coils ON.

Regards

L192
Yes, that is correct regarding having two coils on at the same time. But look at his blue LEDs: there are always two on next to each other. But total only 6 are on (3 sets of 2 LEDs spaced at 8-10-12 "off LEDs" as mentioned before), so he is switching 6 coils total (not 12) per step. E.g. he will switch the 6 coils in slots 1-2, 11-12, 23-24, then it shifts to slots 2-3, 12-13, 24-25, etc. on the next step.

I have verified that this will generate the six poles NSNSNS that Pierre mentions. I am going to write this up in a PDF with clear images once I have some more time.

PmgR
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pmgr

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Re: 170 watts in - 1600 watts out - looped - Very impressive build and video
« Reply #234 on: March 13, 2018, 12:43:09 AM »
I found a parted 2 stroke gasoline AC generator in the lab space I have free use of. So I took it apart to see how many poles (slots) the stator has, see video:  https://youtu.be/iYullLkW9rc
Hi Luc,

In your stator only has 30 slots, you need to check how the current windings are positioned to see if you can even re-use them.

You will need an even number of poles, so 5 poles won't work (you would end up with NN or SS next to each other). You could make six poles by having the windings span five slots. Looks like that is pretty much the only option as 3 poles spanning 10 slots wouldn't work (odd pole number) and 5 poles spanning 6 slots won't work either (odd pole number). 10 poles spanning 3 slots would be a possibility as well. However, note that the more poles you have, the less "stair case" points you will have per sine cycle, so I wouldn't go that way as it will not give you a nice sine wave. Hence I recommend doing the 6 poles spanning 5 slots each.

PmgR
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Help end the persecution of Falun Gong * www.faluninfo.net * www.stoporganharvesting.org

gotoluc

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Re: 170 watts in - 1600 watts out - looped - Very impressive build and video
« Reply #235 on: March 13, 2018, 02:58:34 AM »
Hi Luc,

In your stator only has 30 slots, you need to check how the current windings are positioned to see if you can even re-use them.

You will need an even number of poles, so 5 poles won't work (you would end up with NN or SS next to each other). You could make six poles by having the windings span five slots. Looks like that is pretty much the only option as 3 poles spanning 10 slots wouldn't work (odd pole number) and 5 poles spanning 6 slots won't work either (odd pole number). 10 poles spanning 3 slots would be a possibility as well. However, note that the more poles you have, the less "stair case" points you will have per sine cycle, so I wouldn't go that way as it will not give you a nice sine wave. Hence I recommend doing the 6 poles spanning 5 slots each.

PmgR
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Help end the persecution of Falun Gong * www.faluninfo.net * www.stoporganharvesting.org

I know that and agree with you!   when I'm video recording I often mix up words like say amps when it should of been watts. So in this case I should of said a 5 slot span will fit in the 30 and not 5 poles will fit in the 30
As for using the existing wire. It can definitely be done but it takes a lot of time. If I decide to take that route I'll make a video to show how I do it. Hopefully I'll say the right words to describe what I'm doing lol.
Thanks for bringing this to my attention and making it clear for others,

Regards

Luc

Thaelin

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Re: 170 watts in - 1600 watts out - looped - Very impressive build and video
« Reply #236 on: March 13, 2018, 09:29:33 AM »
  Well it seems I was a bit jumpy about the first video. Pierre, my apologies to you so I guess I get to eat some crow.
@Partzman, you beat me to help out here so cant but thanks much as well.

Now, am I right in finding that each slot has in fact two coils in it. One is reversed to the other when it is powered. Is that how he is gaining the NSNSNS effect?

Anyhow was thinking on how could I figure out how many winds are in the stator.  Would it not be similar to a transformer in a 24V to 125V backup system?

thay

Jeg

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Re: 170 watts in - 1600 watts out - looped - Very impressive build and video
« Reply #237 on: March 13, 2018, 10:31:16 AM »
To my humble opinion, when two or more coils are overlapping, meaning that they have a common core area, then the transformer effect takes place. That means if both of the coils (which actually act as two primaries)are pushing a North to the same direction, then the induced currents between each other will reduce the flow of the current from the source (battery or caps bank) to both of the coils. The outcome will be a North of a much lower intensity than when one coil is in action.

seaad

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Re: 170 watts in - 1600 watts out - looped - Very impressive build and video
« Reply #238 on: March 13, 2018, 12:55:14 PM »
Repeated N and S passing by. 
Steps : 1, 1-2, 2-3, 3-4, 4, one step pause.

ramset

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Re: 170 watts in - 1600 watts out - looped - Very impressive build and video
« Reply #239 on: March 13, 2018, 02:21:33 PM »
Quick note to Luc
Slyder is on the coding part [its what he doo]

has ordered the exact arduino for programming and also said the mentioned propeller would do the Job but overkill
Quote
" Like taking a Ferrari to the grocery store"

he'll help you sort all that

all good  :)

Chet
ps
as always

all coding will be  open sourced