Alternative motor windings and drive schemes

[Clugh]

Id like to share here a few things about electric motors and inverters that I have been exposed to over the years. Hope there will be interest here

Thank you.
THE REAL 1BOHO.

[Clugh]

It is possible that this thread may go in many different directions, but all will be relevant to the topic. This is an inverter ill be beta testing upon release. It is a Valenok from Zubax electronics who I'm working with on motor drive development. It is a very sophisticated motor agnostic inverter that uses a floating point SVC commutation scheme. It is a 96 volt speed controller. In this thread I intend to experiment with various motors windings and inverters and from time to time actually record some possibly relevant data about it that hobbyist such as my self can apply.

[Boho1]

[Clugh]

Thanks what's good BORAT? 😄



Like my drag cells Borat? They are the neqwest Graphene 4s2P 250C. That's 2.65kA

[Clugh]

To go with them I went with the AMASS SH8.0 connectors
the wire for now is pure copper 8 AWG but the batteries are actually 7AWG and came prewired with this style connector also.

[Boho1]

https://www.rcuniverse.com/forum/extreme-speed-prop-planes-104/11679652-new-speeder.html

Great Success

[Clugh]

Thanks again Borat.

Here are Photos of the 24 slot stator and the hybrid semi concentrated wind just released to me are the personal courtesy of Dr Islam @ ABB shared with for educational purposes.😁

it is a 24slot 10 pole machine.

[Boho1]

[Clugh]

Thanks Mr Bean...

Here is the stack shared with me from the PHD at ABB

[Clugh]

Here's the efficiency map compared to a typical hobby wound machine like most manufactures sale.
U see the conventional only reaches 94% while the new motor winding is well above 96%
All the blue in the top plot which represent the lowest efficiency in the legend is a clue to the contrast in performance

[Clugh]

So you have a full speed range efficiency map for a real 35 Kw 24 slot 10 pole machine with conventional dual layer wye vs the wye-delta hybrid wind ABB has tested and verified empirically and analytically and the results agreed with minute percentage of deviation. It gets a bid for truly high end fractionally slotted concentrated windings.

[Clugh]

[Clugh]

6 + 6 YY 15ga. Pyro 800 and the unloaded BEMF sine generated at 2,250 rpm



Here also is a very controversial Kontronics pyro 800 that was wound and tested b4 i sent it out. They guy scammed paypal and never paid for it.But refused to return its for supposed "REPAIR" I find it amusing since the motor was hand tested to run perfectly with no shorts by me. Paypal lost their money because i certainly refused to pay for it and could not get it returned to me by the customer. I don't have an open door windings service I was simply paid a small fee for having fun on the side.on the first pyro I ever wound.

[Clugh]

https://www.rcuniverse.com/forum/ext...w-speeder.html

Great Success

Hey Borat,
What happened to your link from post # 6 and your friends "speedplane" thread ?



Nice job! 😘

[Clugh]

Borat,
In a more Rogerian world .......

The axial pole pair was realized so long ago at this point by A Chinese engineer who is a member of the IEEE educated and an Engineering chair at a prominent university in the UK. We've known for years now that it was an easy way to achieve better performance for a single layer or any FSCW machine.as long as the magnet width ratios are correct for the harmonic boost or attenuation you are after. It should be easy to understand how to mix and match the hk and A series pm pieces. then maybe you will see real success.in better performances than previously achieved. Learn to really use the resources at your disposal How simple is that? Its no need to flounder with fallacy.

Wie Sie sehen können, landete nur der Thread Ihrer Freunde im Papierkorb 🙈

Enjoy the rotor.....

[Clugh]

This is a good thing Borat if you you have a low TIR in the lathe butted up against the chuck at zero rpm but it tells you nothing about the magnetic air gap consistency or TIR at 20,000 rpm. The tir will also move around when the magnetic and resonant forces are truly acting upon the bell. This simulates very little about real operation and what goes on at the air gap. Creating new tangential force vectors with pm or wind modification by interspersed phases is how you mitigate those significant modal vibrational effects. They are different for every topology and prominent in individual tooth coil winding system A real time analyzer, PA, or oscilloscope would telll you what's better much better.Aww man... it looks like you marred your brand new bell with a few scratches...😒

Build an operational TIR measuring rig and find out the applicative truth.

Enjoy the rotor...

[Clugh]

👀


BTW to more accurately take even these external bell TIR measurement correctly requires something a lot different in lathe setup and preparation. The first thing you would want to do is turn an arbitrary piece of 360 brass or aluminum bar with a live center in the tail stock and assure you have no taper in the turned workpiece. If you do you have to align you tail stock first. Once you cut no taper you will know you are aligned THEN you can mount the long end of the rotors shaft in the chuck without the back iron butted against chuck. The other side of the rotors shaft is bored so the conical tip of the live center goes in there. Then you mount the indicator on the tool post mount. You transverse the bell and take TIR measurement from one end to the other. I don't know what you have with your lathe bruh but you need a quality live center with a morse taper for your tailstock.



I hope this helps...
Clugh

[Clugh]

More battery photos....

[Clugh]

I ordered 5 pairs each of the black & red male and female AMASS SH8.0 like the one pre mounted to the Drag cells. Here is also the resistance comparison to QS8's connectors.

[Clugh]