Building the sickest ® VAWT ever. Brilliant minds unite please!!

[brandnewb]

so in an unrelated event we have now got rather thick spruce beams.




I think I can use 3 of those to replace the current wooden arms of the turbine.

It will extend 2 things!!!!!!

The radius of the turbine and the time before this wood needs a more permanent solution.

Ahh yesss. the blade frames.. it has been so long that one would have been forgiven to think that also has withered away by now.



Nah, these are aluminium and wither far slower than the panels used as blades behind it.

Now please let us all get on the same page in where dedication is paramount.

Here is a snapshot of where I store related stuff..



There you go. Mentally borderline (un)stable while actually able

I love it when a plan comes together.

 

[brandnewb]

Trying to go any faster makes the VFD trip the circuit breaker it is on.

I am not sure it is important to make the distinction here. But my breaker cabinet uses devices that do 2 things combined.

They trip at shorts and they trip at over current.

So I guess that was an example of the breaker tripping at the correct time when I was pushing the PMA harder and harder.


Now does one see the need for this Belgian freak 11KW motors?

I sure do. But if I am but one man then I think I'll pass.

 

[brandnewb]

I have 2 contenders that I would like to put up to the current PMA.

First the one that brought me to my knees and made me start this mission. I can buy a new one of those fake turbines, or the closest to it still available, and then see if my logic with the current PMA has held up or not.
SPOILER alert. It will!!!


Yet then there are PMA's that go as being the default go to as written in books by respect authors.

Now I have read those books.

And here comes the bad part. I do not remember seeing, and please correct me if I am wrong, a chart depicting something close to rpm/Hz and output.

If I was wrong because I have overlooked that information then still we are on the correct track!!!!

Now we have data to compare against when I finally get serious about this output graph with our own setup we have got here.

Hell, I even have all the magnets (minus one) of the most popular PMA on fieldlines ready and waiting to be used. And I have the wire to coil to boot.

I am now at a junction point.

Do I let slide all what was ever said about this mission that was meant to degrade it.
Or do I go on like a little child trying to proof them wrong.

I think I have too little life left in me to go for the latter. So I will make due with my scientific spreadsheet of our current PMA.

 

[brandnewb]

shoot

measuring the lines on a delta 3 phase using grounded probes really seems impossible.

Not sure yet though.

But I do not dare to push the envelope as also when hooking all black clips together the PMA seems shorted. I can feel the resistance even though the circuit is open otherwise.

If hellbent on using an oscope to determine frequency then we should be getting differential probes but the sheer cost of those makes me say
NO WAY!!
Their like a 3rd of the cost of this whole oscope.

So I will need to revert back to a tachometer then, and use RPM rather than frequency.
They both relate to each other so although now things will become far less scientific, we can still work out frequency close enough I hope.

When life throws you lemons don't sour. Make lemonade

 

[brandnewb]

ok so now we have an almost non woble system



I know I know. Hedges will roast me sooner or later for this setup

Also I am fully aware that the coil holder is sagging. That is just one of those issues that are to be solved.

At least we now no longer have additional mechanical drag like before.

Sure there is still plenty of that, but less of the avoidable kind.

 

[brandnewb]

btw for all of the readers that are wondering why would the upper disk have alu braces.

Just one of those trail and error tries. But too lazy to remove them.

They are to be removed sooner or later.

 

[brandnewb]

also I thought that when tension is of importance I thought maybe flip the upper guy holder. it will decrease the angle with the disk and therefor make it more efficient.

Of course when the setup is out of this POC situation.

If we would do that now then... system collapse.

 

[brandnewb]

@Hedges
I have a sneaking suspension you feel down at the moment. But come on brother.

Yes you and I are brothers, in the social aspect of it all. So are amongst us many of any walks of life and believes.

Now we get to focus all our energy into what is next!!! The one thing that unites us.

Energy!!!

I deliberately avoided the word of --power--

I still am looking forward to a good drink with my main man OZ marveling at his pond.

 

[brandnewb]

Gang I think i have got good news. please stop me if i might end up blowing up the oscope.

If I use a single probe with the lead connected to line 1 and the ground clip connected to line 2 things feel still open circuit.

I also get a nice wave on the oscope with voltage and frequency and all.

If this will not blow up the oscope then we now have solved the problem as the voltage and frequency line to line should be perfectly suitable for data gathering.

The great part about this is that now we can test any type of PMA.

Anyway I will now spend this weekend collecting some detailed data.

pffff finally after what feels like forever.

 

[brandnewb]

I can already spot a potential issue with wago clamps
this is the coil type
EDIT!!
pasting spreadsheet data from clipboard did not work out this time around so I will try again.





there is 0.2 ohm increase when using wago clamps when connecting coils in serries

Can someone please suggest a better way to connect wires while still keeping freedom of change?

I mean it should be easy to try out other wiring ideas without having to take out Terry the torch.

 

[brandnewb]

grrrrrrr

my lord this is going to take ages!!!

woble free sounds great yes?


hahha only when we are upping the anti then the unbalanced nature of it all becomes shamefully clear.

Woble free in a horizontal axis when spinning slowly. task achieved.

Now because the whole setup is not balanced things start to wobble again when ramping up the RPM.

ok so screw this. I am going to do 2 things in parallel before I proceed taking data.

1) get a 40mm shaft meant for machining with all the minimal sub "micrometer" tolerances it comes with.
2) balance the disks because we now can no longer accept any wobble of any kind.

 

[brandnewb]

ok I found an intermediate way of progress.

We first start balancing as much as is DIY possible.
For one I am alreaady taking out the alu braces. My lord that was a dead end !!

And only then we move towards a stronger shaft to hide the imbalance. In case there should be any left mind one!!.

 

[brandnewb]

@Hedges @justgary @anyone-withsomekindofexperience.

I was actually rather serious about this Ohm increase due to the wago.

What I have not told everyone yet is that this is all building up to something MUCH larger. Hmm I actually already did hint to that but now it is taking shape on my end.

If anyone knows an easy way to connect enameled wires together with minimal resistance increase then please let me know.

Soldering if we must is ok but I kinda hoped for something more flexible.

I'll explain this all then.

I am going to look for the limits of this current PMA/Coil configuration.



And I will find them.



And then I want to compare those results against the DD of which I will make an all new version at 192 magnets in a single row after this.

Now if one does not know what is the DD then that is cool. Maybe even better as most likely the DD will not do what I am hoping it will do.

Yet because I want to give it a fair chance I need some way to string together many smaller coils with minimal losses in field forming potential (aka) increase in ohms.
Now this is easy to do if we start taking out "The Torch". I will if need be but are we sure?

no one knows a better way ?

 

[brandnewb]

so anyway.

I will keep the words of @justgary echo in my mind

Once you surpass 300 watts "You win"

Challenge Accepted gang!!!

 

[brandnewb]

so I am still not there yet but I thought it important to give a process update.



the new itteration of the PMA will no longer require a large and unweildy housing. I am trying out low and fat.

The changes made are now we have again the 48.3mm tube as central colum for added stiffnes and a rubber pad between the foot that holds the lower disk. So we can tension as needed to make things laser line level.

I had to be tardy because my greenhouse also needs completion.



so the grand idea for the PMA is something like this



I wish one could call it "all in a days work"

But things take time and this inspector is quite cunning as we all know.

 

[brandnewb]

at about 120 rpm this beast is still behaving. even though not balanced yet.

but the most important part is is that now it is level enough to take it up to the next level.

Even when throwing rpms at it!!!!! the laser line suggests things are stable.



sure sure not perfect yet!!

But so close one can almost taste it!! the raw power that is waiting to be released!!!!!!

 

[brandnewb]

@OzSolar

I just spoke with my buddy Major Alan "Dutch" Schaefer (https://en.wikipedia.org/wiki/Dutch_Schaefer)

He agreed to extract your bulldozer in a top secret operation and airlift it here to give the PMA a beating.

....

So when you, finally barely because of stealth technology I can not share with us here, hear rotor blades spinning from 'the choppa's don't be alarmed. And especially do not try and prevent them as they are coming prepared

He assured me he will return it, in similar or even better condition when we are done with it

 

[brandnewb]

For the coils I thought a similar concept to be able to fine tune things.



when we let it rest as is then things do not align. hence I also baked in a fine tune ability for the coil placement while designing.



I realize that PLA is not the best choice for a coil holder in the long run but this is still just a proof of concept.
just to see how close I can get the magnets snug to the coils.

Once all is confirmed to be viable we can focus on how to make things lasting.

 

[brandnewb]

the more I think of it the more I am starting to believe we need a CNC router.

I do not have the space for like a BIG one, nor the support of my spouse.


hahahha so picture this;

Hey honey I am home.... with something you do not care about and it will prevent you from parking your car in the garage... But I love you!!!!

Now what nuclear accident is about to happen? Mind you we are talking about a partner with a strong mind.

Ohh lord the war will be swift, painful and with a lot of fallout.

...


So no, I need to step in line so I thought about this;

Once again I am not doing commerce. These guys do not even know about me. But I am thinking why not use one of these?
I mean the build surface is larger than my current 370x370x400.

so I am asking for feedback on whether or not this is bonkers or sounds like a plan?

 

[brandnewb]

I have toned down quite a bit with the grand slamming and the shouting over the past months.

but do not let that fool you. this pressure cooker has steam to let go!!



As I type I can hear and feel this thunderbirds countdown in my mind.

But I will compose my self and just leave it at that for now.