Alternative motor windings and drive schemes

[Chxpress]

Hi,

i will not run the Castle in my boat. i have other option from our company. We run 400 kw motor with only one sensor, no one told you that i want to run the Castle with one sensor, there is no problem for us to build such controler.You forgot , i start with the first sensorless controler in the model Builder bussines with H. Lehner , all other copy it. Hans and i are the first who use Mosfet in our controler when all use brushed motors. That was the time when i worked at Infinionin at 1978.
And i have the XLX2 with the newest software update . The video was from Tyler , he know much moore about electric drives that you , he workes in that bussines , worked with Magnet Motor L3COM , he is my friend. A big diff to you. And Tyler is a world record man. You not , never .you are.

The darkside
Lucas

[Clugh]

Hi Ralph, I like it. Similar to the cooling on the XNOVA . I have the calculations with no fallacy. Not only was your machine more power dense than his it has better field weakening profile than the 41 series Lehner. Glad to see the practitioners there. You see by the post what this individual really knows about the subject matter of a castle inverter. He spends an incredible amount of time being jealous of all others but hasn't implemented any of it on the noise box. If It makes more torque why does it require more amperage to pull the prop than the HK? You see in the calculators there is no advantage. You hear it on the castle so It is what it is. Its disruptively the nastiest sounding commutation like its master. If if produces a sinus it certainly isn't ideal for the Castle. The video and the sound you hear is no lie that's reality. Name calling does what? The traditionally would motor out performs it. All you have to do is plug the recorded constants in. His insults don't change the mathematical result but it does explain his expanding personal problems. Nowhere to go with all the fallacy because it doesn't change the facts and is a poor open display to people not interested any more than they are about all the other motors with 93% efficiency. Some machine like cobra and xnova have higher efficiency. It is what it is. It not my fault the constants aren't that special.

If its ideal in commutation with a Castle why does it sound like that???? The HK does not sound anything like it on the castle. You know I know. I wont spend an exuberant amount of time discussing it as you can see it isn't anything that special. More HK's are sold there is no doubt. Where are the heli and speed plane pilots that run a 41 series Lehner. It is a fact they do not exist. So you will get more fallacy but no proof that a single hobbyist uses it and is pleased with the result. Its heavier than all the competition. Where has it proven itself in the competitions he talks about. It wont be purchased for a single speed plane, F3A plane, or Acrobatic Helicopter.

The shenanigans dont have any meat or add up to anything because the recorded constants have been captured and anyone can use Holles calculator and see where it falls next to whatever.

Empirically you've seen what it can do at the prop in an airplane. I have no idea what he's raising hell for because common sense would know it wont change the data that everyone can review for themselves. Its childishly irritating and totally ignorant when every hobbyist can review it in their own calculators and see no eureka moment.

Like the one the have when they realize the reality that the disruptive soul putting on a show for forums ACTUALLY hasn't run a model in over 20 years. Tell him to show you a video of a running model of any type.


Is his reality is 400kW in an rc model? So I see Gerd's problem with him now. This is also why I don't associate beyond a few emails or even at all now. I dont have time for crazy Mofos that run back n forth between two forums trying to be some king with 93% Eta. All that epithet and fallacy will not change a single percentage point.

Put it in the Cals and see does anything change about it. It's nonsense period and still does not change how the castle works that he brought but isnt going to use now after arguing with me how it works for 3 pages.

Its funny because JAGS set the latest record with it and a Lehner inrunner.🤣

Thank you for your time and patience
Hubert

[Clugh]

[Clugh]

As you have read from castle and me . It does not work that way. But it doesn't matter because now he is going to run a 400kW industrial drive in the rc boat that hasnt actuall ran for 2o years. I mean this is really ridiculous social media nonsense.

[Clugh]

And Its wrong because as the PWM frequency increase with timing advance so does the magnet losses. Nothing about hall sensing truly protect the magnets. Only a harmonically damped winding system does that Slot wedges or a different machine topology. Not one of the car inverters run a sine and their BLDC motors above 2 poles don't produce one either.

A motor runs hotter with high timing DUH you don't gain any real power there just a shift in the meat of the power curve.

The 41 as you see and hear needs higher timing than your HK just to commutate smoothy . This is academic fact not fallacy.

[Clugh]

The Effect of PWM on Rotor Eddy-Current Losses in High-Speed Permanent Magnet Machines S. Jumayev1, M. Merdzan1, K. O. Boynov1, J. J. H. Paulides1, J. Pyrhönen2, and E. A. Lomonova1 1Department of Electrical Engineering, Eindhoven University of Technology, Eindhoven 5612AZ, The Netherlands 2Department of Electrical Engineering, Lappeenranta University of Technology, Lappeenranta 53850, Finland


High-speed permanent magnet machines, supplied by pulsewidth modulation (PWM) voltage source inverters, operate with distorted stator currents. Harmonics present in these stator currents deteriorate the machine performance by generating losses. Mostly, these losses are following the machine design using a transient finite-element model. The precise measurement of these rotor eddy-current losses is extremely difficult, hence, only a few papers provide convincing comparisons between predictions and measurements. This paper presents a fast and precise analytical approach, verified with measurements, to consider rotor losses of machines, supplied by PWM voltages, already during the design procedure

[Clugh]

The conventional PM machines are often designed to have a stator field with a very dominant fundamental, with many design features being incorporated to minimize the harmonic content. The rotor is therefore exposed to an essentially stationary applied field within its rotating reference frame. As a consequence, rotor losses only tend to be problematic at high speeds or in cases where the converter introduces significant harmonics into the current waveform. In this machine, the problems of frequency dependent losses are compounded at higher frequencies, particularly as harmonic fields (generated by spatial harmonics in the winding distribution and time harmonics in the armature currents) play a significant role in rotor eddy-current losses. The current harmonics originate in inverter output voltages which are distorted due to pulsewidth modulation (PWM). Harmonics in the inverter output voltages can easily be assessed in advance for a selected PWM type.

However, values of the current harmonics for a given voltage depend on the circuit impedance which is highly dependent on the frequency. This is mainly a consequence of the inductance change due to the rotor eddy currents. This paper calculates the rotor eddy current losses in a PM machine supplied by the PWM voltages by coupling the magnetic and electrical models. This approach allows to calculate the current harmonics and the rotor eddy-current losses caused by PWM voltages without a priori knowledge of the machine inductance. For verification, a high-speed machine with a slotless toroidal winding, supplied by the regularly sampled sinusoidal and space vector (SV) PWM voltagesource inverters (VSIs), is analyzed, where both analytical and measurements are presented.

II. PWM HARMONICS

Voltage source inverters used to drive high-speed PM machines have a three-leg topology and the only significant difference is the modulation strategy [2], [3]. There are many existing modulation strategies to be implemented in three-phase inverters starting from the conventional ones, for instance, naturally or regularly sampled sinusoidal PWM strategies, to the more developed ones, such as SV PWM. Usually, these PWMs have a constant switching frequency and high-frequency components in the inverter output voltage appear around multiples of this switching frequency. These harmonics, sideband harmonics, are the main contributor to the rotor eddy-current losses in high-speed PM machines. The spectra of the voltage harmonics caused by PWM switching can be expressed as a Fourier series. Analytical expressions describing the harmonic spectra are presented in [4], where the general form of the expression

[Clugh]

Now post for the open forum how your proposal with one hall sensor changes the residual inductance of the PM in the rotor. Here we can see an increase in PWM facilitates their and the rotors destruction.


You say only beginners run 3 hall switches so please show the forum what a real drive expert would do....with one hall switch that changes any of this.




Thanks
Hubert

[Chxpress]

Hi,
Where do you see a syncloss when the Lehner 4140 trial run in the video by Tyler? The Motor is Free Running, No Load. Just turn up freely. You fantasize about it, I asked Tyler whether he experienced a syncloss with the engine when he was stressed. His answer "no". And the JAG S Team drives a Lehner 2 pol inner runner with air gap wrapping that is almost impossible to force in the Syncloss. A Hall probe is enough for me to operate the engine without synclos, regardless of the type. No matter what Mr. Haregtt rhyme here. Mr. Hargett has never participated in a competition for decades, nor is any of his boats. All air numbers that do not work. So no moore conversation , it is lost time with this Hubert Hargett . remember his name and forgett him.
Happy amps Christian

[Clugh]

what are you talking its desyncing in Tyler video The ETA is 93.5 whats exclusive about it? Ralphs motor and mine both have a higher power density

[Clugh]

They've been waiting on the explanation since march 27 , 2023 you certainly arent making more torque in this scenario where the reactive power comparison tells it all. I know there will be more fallacy and no explanation on this fact.

[Clugh]

Black Karma "POC" Edition
Total losses 74.6 !
Copper .1 watts
Iron 73.6 watts
Esc .8 watts
Battery .1 watt
Kt= 11.55m Nm/amp
Km = .1639 Nm/Sqrt watts
Power Density 59.88[Km²/g]
Maxon Eq 1.92 Max Eta 96%

Powercroco
Iron losses 280.9 watts
Copper losses.3 watts
Esc 7.2 watt
The battery loses 2.4 watts
His power density is 50.18 Km²/g
His Kt is 4.81 mNm/amp
Km .1552 Nm/sqrt watts
Maxon eq 1.92 Max Eta 93%

Ill wait for the response then post the tru last place motor out of the three. We all measures and confirmed with real photos of the measure and punched them in the calculators. The chips fell as they wanted too. Ralph eta was exactly the same as the Lehner but he has higher power density than the 41. Thats why it can turn a prop with less amperage than the 41.

Its silly because the speeders already know the motor isnt anything special and they are never going to buy it and neither will I. I like Lehner because he's not on forums acting a fool and does not visit them. He can see his engine in peace without trying to force it on people then when they dont want it he raises hell. They still dont want it so the nonsense isn't serving any real purpose.

The hall sense doesn't work that way and the motors do not produce a sinus at all. You own words are posted number 2621 about it and its wrong and Ive explained why. Fallacy wont change it.

You posted that march 1 2023...

[Clugh]

Go back and read your own post NUMBER 2621 plus all the personal emails about the castle. I have all that i can show any time. Post to the open forum that your power density is higher than either engine so I can post the data and truth about it. You're tweaking and your silly anger makes you forget your own words. youve been trying to get the speeders to run hall sense when you don't and haven't hooked a single hall to it.

When did the speeders ask for help anyway? They've openly rejected all your post .That isnt my fault . Thats on you probably because everyone is a Donkey that disagrees with you then they find out its wrong like the scope waveforms.

You just purchsed the scope at my advice now you need to use it and understand what it is showing you.

Does that little thing capture FFT?

[Clugh]

If it does you know what comes next. Capture it and you will see all your harmonious epithet come to life . Its triplen and desync no doubt. As we all know sinus commutation is quiet. When he brakes it and it screeches what it hesitate under throttle. You know what going on in the video Stop playing buddy!!! Don't insult me explain it if it isnt desync with the castle Christian?

[Clugh]

https://www.youtube.com/shorts/T-IusP6UB_k?feature=share

Explain what we are hearing here. I know what It is but you go ahead an explain it as you are the real drive expert. Its certainly not sinus operation, Capture the FFT of the Bemf at the applicable speed and you will see it. I bet you will not capture the harmonics it and post it here...\O/


Clock it to WOT with a prime mover twin an let me see what the hype is all about...... This is exactly what I want you to do.....😊

Even better capture the commutation with your castle........it will bury the fallacy....

👀

[Clugh]

Chris since im at AUDIO you know I have a RTA right? you want me to analyze the video for its audible noise and show it to the forum versus a few other machines?

[Chxpress]

Hi Clown,Hubert.

yes, let's see your frequency analysis. I will then present your results to the Bundeswehr University and then publish the results here. They will of course also receive Tyler's YouTube video.
In the meantime, you can watch a few videos with Lehner 41XX engines in model racing boats in which much larger engines otherwise provide the same performance. You can remove your little engines after 30 seconds as black lumps of coal. They cannot handle this performance. Your stupid rewound motor with the great winding will not even get that far. Like the Scorpion surfboard drive, its lack of power will immediately cause bursts of laughter from the spectators, the boat will move so slowly with the motor. Like the motors of other motor tuners who rewind series motors, it has too little iron in the coils. Your motor has even less iron, even thinner stator teeth. Magnetic force is generated by the coil and the amount of iron. You can send thousands of amps into the coils, but the force won't be particularly great given the thin and weak magnetic strips. Have fun making the video when you finally have to show what your super motor can really do. We've been waiting impatiently for this video for years. So far, all we've seen are empty bubbles that all the forum readers are laughing at. LOL.
Furthermore, everyone here understands the syncloss that is caused by the extremely high load and the resulting occurrence of iron saturation, which means that the EMF can no longer be evaluated correctly and so the synchronization of the coil current to the rotor magnetic field can no longer be generated properly. No one is interested in an idle synclos that is completely uninteresting.

Lehner 4140/10 im Powerboat. You will never have.

https://youtu.be/nEu4S17Sji0?si=pCTmSUWtWsbqPype

https://youtu.be/Cl4lsoxODKg?si=FeFT2XyhI962IqrW

Happy Amps Christian

[Clugh]

That impressed you? Ok

And no there's no 41 series verified at the universities. The clown is the person that cannot see they run MGM comp pros in sensorless mode. In his own screen shot he sent and these boat both run less than 80 mph. AVERAGE slow really and they turn horribly

all you have to do is look at the pitch speed and motor Kv and that neither of these boat are owned by the poster he doesnt not own a boat that has run in over 20 years.


So what people can see that know better is the bemf screen capture and power density number diversion into more fallacy the conversation about the subject matter just fades away . Youve even decided to troll elsewhere and it doesnt change a thing about mis matched power systems or the fact the things sound terrible and was loosing sync with the castle. It isnt fallacy its fact. And you wont explain that or why she cant pull the same prop as the HK.


I hope you do not think im going to continue to dignify your epithet without any explanations to the hobbyist about why the efficiency is no better than their HK and why your power density is less. Do you want to forward the constants to the university because there is something better than a 41 series Lehner outrunner for a boat.

I GUESS THEY ARE SUPPOSED TO IGNORE ALL THE FACTS ABOUT THE DRIVE THE WAVEFORMS AND THE MAGNETS RESIDUAL INDUCTANCE. NEVER MIND THEY HAVE OBJECTIVE EARS.

[Clugh]

Ralph I have Duane Hanselman's asymmetric serial winding which definitely didn't produce a sinus. Its 20 times smoother with the trap drive you do not hear all that noise and you can hear the triplen whistle at 60 hz I slow it down so you can hear it whistle. But you listen to it run.

[Clugh]