Alternative motor windings and drive schemes

[Clugh]

Don't ruin all your spare prop blades for laying down the wire in the slots.

[Chxpress]

Hi Hubert,
This year I have a few New Year's Eve rockets and other flash lights etc. Fire waterfalls etc. made. I still have some aluminum powder left over. The powder particles have already undergone such a strong oxide process that they are no longer conductive. I will carry out a pole change frequency test and measure whether the powder heats up as a result. A simple pole change of a two-pole rotor show no heat up. I will also use this to add a high-temperature-resistant casting resin and then cast a small block with it. I will then heat it on one side on a heating plate and measure the temperature there and at the other end and the time with which the heat travels in the block, i.e. the heat conduction speed. I should have some graphite powder or a block and I also have some pyrographite. I am particularly interested in how the materials behave in the alternating pole field of the rotor and on the stator, and how strongly the alternating fields stimulate the materials.

Happy Amps Christian

[Clugh]

Hi Hubert,
This year I have a few New Year's Eve rockets and other flash lights etc. Fire waterfalls etc. made. I still have some aluminum powder left over. The powder particles have already undergone such a strong oxide process that they are no longer conductive. I will carry out a pole change frequency test and measure whether the powder heats up as a result. A simple pole change of a two-pole rotor show no heat up. I will also use this to add a high-temperature-resistant casting resin and then cast a small block with it. I will then heat it on one side on a heating plate and measure the temperature there and at the other end and the time with which the heat travels in the block, i.e. the heat conduction speed. I should have some graphite powder or a block and I also have some pyrographite. I am particularly interested in how the materials behave in the alternating pole field of the rotor and on the stator, and how strongly the alternating fields stimulate the materials.

Happy Amps Christian

Hi Christian,
Happy New Years and Hope everything is safe there. America has major problems. Please pray for peace here...See what I'm saying? Fighting and hate is not worth it.


So you are going to calculate how long it takes for the far end to match the source. Ok. That's useful but can you then convert those ΔT/Time readings into watt per meter kelvin to compare to other materials or are you planning just to compare it to other materials using that same unit of measure? You can also do a dc test shorted across the two of the phases of a the caste stator and learn alot about the thermal character of it. The thermal conductivity off the Graphite's will be extremely high. Did you see in the latest tech news they are building the high temp superconductor research and manufacturing facility right down the road from me?'

What about a superconducting PCB

Thank you for your time and patience
Hubert

[Clugh]

Are you going to use the Hemholz coil for your ac test or do you have a Steinmetz rack? What are you using to drive the AC a signal generator or a small low current plug in ac transformer?

[Chxpress]

Hi Hubert,

we have Helmholz coils at Magnet Motor and a high power frequenz generator that can handle up to 500 amps. Sinwave , triangle and block , dońt know the right word, you know. We have this from superconductor energy storing coils to feed them, charging the coils. I have tested the different plates materials for the flux wedge between the magnets for fluxcompresion. I Place the parts in a vacuum chamber and messure the heat up with time. Other test was to see how different parts in a motor make some noise start to emitt like a audible speaker. 150000 watt power give a good entertainment system 8 of such in wheel motors can be noise , so much that people run away. So we ad a noice reduction system to make the motors noiceless , realy important for a combat vehicle. I need some time to do all this , but i will tell you my result. With Pyrographit i had also Graphite thin foils with very high Heat Transport ability . So with some friends i make jokes as i let them hold the foil at 10 cm Away and switch on a lichter to heat the other side and in the same moment they feel the heat and let the foil fall down asotinsching by the rapid heat up . Pyrograhphite is much faster. I will also test it.
I know from the time I designed optical fiber drawing machines that not every material couples equally well into alternating electrical fields. For quickly heating and cooling drawing processes, we used graphite susceptors that were excited with a 60 kw high-frequency generator. Back then it was purely tube generators. Depending on the frequency, the susceptors coupled in differently. We used zirconium oxide susceptors for long drawing processes with slow start-up times and slow cooling times. These ceramics only engage if they have been heated to over 800 degrees Celsius with a steel ring. From this temperature onwards, the ceramic susceptors slowly began to couple into the alternating field and heat up. When they were hot, they were able to run for days without any major material evaporation and held up very well. Everything was under a protective gas atmosphere.

Happy Amps Christian

[Clugh]

A couple of the German hobbyist overseas have built the >400Km/h 12% Ninja speed you build from plans. This would be a good plane for Americans that want to get in sport of speed flight. Balsa wood of course is very easy to work with.

Thank you,
Hubert

[Clugh]

Jonathan's 600 14 poler done. Now ill secure the wires with thermally conductive epoxy made for securing motor coils . Three hybrid bearings are also installed. It is excellent in my opinion but I have a proprietary material that has 4 times the thermal conductivity of the 3M. Digikey is one place you can find such material. It is not fact that it must be vacuum impregnated to bring great improvement. Lord technologies has tested that. VIP would be the ultimate. You can 3DP or turn on a lathe a small VIP chamber and tap it with a vac gauge and a bleeder valve, however I apply it by hand in such a way that it wicks well between the wires and the iron. Have a look 😳. Its not perfect yet but it performs much better than nothing and about 150X better than UHU. It lowers the wires working resistance and allows a more complete thermal circuit to dissipate heat. I can't go back to the old days because they want it now.



Thank you.
Hubert

[Clugh]

Im trying to decide if I want to wind the other one a 2+2-2+2 four layer machine or the dual layer wye-delta hybrid. Which do you like Chris?

[Clugh]

From what I gather what Drs in Munich did with it is connected the machines serially on the backside of the stator and that gives you half turns and much more optimal turns ratios. The uneven coils side move the vectors in intervals of 30 degrees. To me is is like a PAM winding. I'm still studying different windings right? I still have my own sets of questions. It is a lot of vector summation mathematics, but you see the three traps on top the Delta

But you learn by doing right? 😀

Thanks for your time and patience.
Hubert

[Clugh]

For noise dampening in the stator iron you could use a material like Dynamat to deaden it and stop the ringing.


TTYL
Hubert

[Clugh]

So for the 10 turn YY comparison Ill wind each stator half like this where the delta is 6 or 7 turns and the open end wye is 3 or 4 turns .I'd like 10 turns but the ratio is closer with 11 turns. That is the outer wye inner delta in parallel.

[Chxpress]

Hi Hubert,

i show here some easy to use 3 phase motors that are from batterie operated hand tool like drill and grinder overhead cutter/grinder . Some are cheap and some can recycled. No use of housing only two carbon plates to hold the bearing all othe is selve carrying. Nothing moore needed. I will run such motors in smaler powerboats , they can rev high .

Happy Amps Christian

[Clugh]

Hi Hubert,

i show here some easy to use 3 phase motors that are from batterie operated hand tool like drill and grinder overhead cutter/grinder . Some are cheap and some can recycled. No use of housing only two carbon plates to hold the bearing all othe is selve carrying. Nothing moore needed. I will run such motors in smaler powerboats , they can rev high .

Happy Amps Christian

Thats cool. What brand drills?


Look.
I have the 7 turns delta single layers wrapped on the other pyro 600. Now the open end coils get 4 turns if I cant fit it.

4turns wye X Sqrt(3) = 6.928 turns delta

See that took only a short while to wind half the motor. And as you can see no proxy war is started by winding a parallel wye-delta hybrid motor. What sense did that make since the proxy war was ongoing for years without it. What it does is stop the speculation and conjecture of those with zero experience.



Thanks for your time and patience,
Hubert

[Clugh]

For a simple test do one turn wye 2 turns delta.

[Chxpress]

Hi Hubert ,
i am intresting looking forward with you hybrid motor. You will get the win of less loss , higher efficancy , bettet torque over all rev.
like to see what the Truppe say .

The motors are Bosch and Workes

Happy Amps Christian

[Clugh]

Hi Hubert ,
i am intresting looking forward with you hybrid motor. You will get the win of less loss , higher efficancy , bettet torque over all rev.
like to see what the Truppe say .

The motors are Bosch and Workes

Happy Amps Christian

I hope hand winders world wide would try it. If not that's fine. I'm enjoying the motors so not everyone is the same. I found it interesting. Maybe someone there will actually try it then discuss it upon it's merits good or bad. Certainly everyone should be able to find something that works for them.

Thank you
Hubert

[Clugh]

Electrical Machines: Mathematical Fundamentals of Machine Topologies (Mathematical Engineering): Gerling, Dieter: 9783642175831: Amazon.com: Books

[Clugh]

Hey Chris, zeig Erwin diesen Motor der 50er-Serie. Der Hallsensor ist bereits eingebaut, sodass er ihn mit dem Castle oder dem logikbasierten Motorolla-BLDC-Motorsteuerungs-IC betreiben kann, den ich dir bei 34 Volt gezeigt habe.

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[Clugh]

A hand winder could never match the speed.

[Clugh]

Beautiful for mass production.