Es ist leicht zu erkennen, was Thomas getan hat. Er hat einen Propeller an den Motor angeschlossen und ihn mit einem Servosaver auf eine bestimmte Geschwindigkeit gebracht. Dann hat er den Wechselrichterverbrauch gemessen. Der nächste Test besteht darin, jeden Motor unter Volllast zu setzen und dort die Propellergeschwindigkeit und den Verbrauch zu messen. Sein Test zeigte, dass der Lehner 41 mit einem bestimmten Wechselrichter bei gleicher Teillast mehr Strom zieht. Ein Modellbauer kann seinen Test mit jedem Propeller durchführen, er braucht nur einen Servotester und eine Echtzeit-Geschwindigkeitsmessung. Ein telemetisches Funksystem, das Strom und Drehzahl misst, funktioniert auch. Der Test, wie sie ihn durchgeführt haben, lässt viel zu wünschen übrig. Beispielsweise würde Ihre optimale Abstimmung für jeden Motor wahrscheinlich nicht bei denselben Wechselrichtereinstellungen erfolgen. Sie würden also den Wechselrichter für optimale Leistung mit jedem Motor separat abstimmen und dann messen. Thomas' Test bedeutet technisch gesehen nur etwas mit einem Wechselrichter bei einer Einstellung, es sei denn, es handelt sich um Auto-Timing-Auto-PWM. Deshalb ist es in einem Stellvertreterkrieg sinnvoll, selbst einige Messungen durchzuführen und die Wechselrichtereinstellungen für jeden Motor usw. detailliert anzugeben. Laut der Site bevorzugt Lehner beispielsweise PWM-Einstellungen über 12 kHz.
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Hi Hubert,
none of us were there for Thomas' tests. If you look at his motors, they are very questionable machines whose running time sometimes works well but then quickly ends in smoke signals. They don't have any controllers that can handle the motor properly. The auto-timing controllers also practically only adjust the timing according to preset values that don't really match the motors and their technical data. To do this, they would have to record the EMF and store it in the controller. In model making, this is still done without AI and not as a FOC controller, only sine power controllers. Look, the Lehner 7050 is specified by Lehner as 24 KW at max 20,000 rpm. You know what power Thomas calls up in the GOKART and stretches it in continuous operation on the GOKART. The same coils are used as in the small AL. And he uses an FOC controller from India, which hasn't even had the motor in its hands. You won't get any more help from me, the winder messed it up for you. I don't need it, but I'll just mess around a bit, and the winder will get really upset and try to justify himself to his customers. You wrote to me here to entertain you in the forum, which has already become very boring. I've only done a few measurements without loading the induction voltages on various stators and pole pair bells. That's all.
I can stop too. The 24/20 Poler Scorpion runs in the MHZ Surfboard, you know that it almost sinks because of the lack of speed. What should I think of these expert motors? Nothing. Since I left, as far as I can see, not much has happened. The boat is just lying around and I don't see any super-innovative electronics in existence. And high-performance test runs of the delta/star winding that you want to show us, when are you going to show them in a competition? Or at least in a YouTube video.all
, I do Elektric Motors since 45 years together with Hans Lehner and befor we build our motors for our selfe to run them in competion and we won many. I do electronics , the First Sensorlos esc for brushless motors and the slotless motors and the outrunner motors .All copy by the other. Currently i do full size electric motors and fuelcell with Starnberg company and MTU Munich. I am writtings here for fun , that s all.
Happy Amps Christian
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Originally posted by Chxpress View PostHi Hubert,
none of us were there for Thomas' tests. If you look at his motors, they are very questionable machines whose running time sometimes works well but then quickly ends in smoke signals. They don't have any controllers that can handle the motor properly. The auto-timing controllers also practically only adjust the timing according to preset values that don't really match the motors and their technical data. To do this, they would have to record the EMF and store it in the controller. In model making, this is still done without AI and not as a FOC controller, only sine power controllers. Look, the Lehner 7050 is specified by Lehner as 24 KW at max 20,000 rpm. You know what power Thomas calls up in the GOKART and stretches it in continuous operation on the GOKART. The same coils are used as in the small AL. And he uses an FOC controller from India, which hasn't even had the motor in its hands. You won't get any more help from me, the winder messed it up for you. I don't need it, but I'll just mess around a bit, and the winder will get really upset and try to justify himself to his customers. You wrote to me here to entertain you in the forum, which has already become very boring. I've only done a few measurements without loading the induction voltages on various stators and pole pair bells. That's all.
I can stop too. The 24/20 Poler Scorpion runs in the MHZ Surfboard, you know that it almost sinks because of the lack of speed. What should I think of these expert motors? Nothing. Since I left, as far as I can see, not much has happened. The boat is just lying around and I don't see any super-innovative electronics in existence. And high-performance test runs of the delta/star winding that you want to show us, when are you going to show them in a competition? Or at least in a YouTube video.all
, I do Elektric Motors since 45 years together with Hans Lehner and befor we build our motors for our selfe to run them in competion and we won many. I do electronics , the First Sensorlos esc for brushless motors and the slotless motors and the outrunner motors .All copy by the other. Currently i do full size electric motors and fuelcell with Starnberg company and MTU Munich. I am writtings here for fun , that s all.
Happy Amps Christianand commission industrial FOC VFD like SEW EURO in the field a currently. And can build FOC inverters. The first sensorless BLDC was build in America in 1962 at an Ivy league DUKE UNIV. In 2025 The only thing a FOC inverter need is the predictive model that it builds from knowing the direct and quadrature inductances which you have to measure and REPORT and does a Park or Clarke transform. There are no wonder motors FOC always applies the current 90 degrees to the rotor field on either motor that wouldn't matter. Some inverters do this inductance and parameter measure automatically like the Komar.
The chart above comes from Hans Lehner and based on the math that is the torque delivery at 35000 and 6k(.92) peak according to him so its valid as far as any hobbyist that can convert hp and and rpm to torque.
For the torque comparison of the two machines the 4125 and an Powercrocos HK 4225 it can be easily calculated from the current draw and set rpm as a control
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Ich muss über nichts schweigen. Als Ingenieur und Verbraucher kann ich mir ansehen, was ich will, und ehrlich darüber berichten. Wenn sich andere die Zeit nehmen würden, nachzuschauen und ein paar einfache Berechnungen anzustellen, würden sie vielleicht sehen, was zum Teufel los ist, und könnten sich mit mir anfreunden. Und der Idiot kann nicht lesen, weil ich gesagt habe, dass der Motor mehr Strom verbraucht. Ich habe nie gesagt, welcher mehr Drehmoment hat, Arschloch.
Der ganze Blödsinn, den Sie posten, bedeutet für keinen Bastler oder jede Person, die etwas von Mathematik und einfacher Physik versteht, etwas.
entspann dich, Kind
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Because U just told them Thomas test was invalid so i guess it is now coz of all of the fallacy you just posted but I guess you didn't realize that it showed the Lehner made more torque...
Oh well good luck Eröffne deinen eigenen thread. Der Irrtum ist viel überzeugender also können wir in meinem darüber schweigen.
Later
Hubert
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Benjamins VESC that Thomas uses in his go kart is also not from India and there are FOC controllers that will learn the axis inductances with AI. THE VESC can also be sinus, FOC, or BLDC so its not limited to any commutation style and it is not a new inverter. People should actually visit the open source society and learn about the specific inverters before they speak on it on a hobby forum. The fact that Thomas cannot measure his own direct and quadrature inductance and enter it into the input parameters of the VESC has nothing at all to do with the head to head comparison of the 4125 and 4225 motors. He didn't run a VESC or FOC commutation in his test. They also dont need FOC commutation for great high speed performance. That's been posted umpteen times in drives 101.
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Nicht jeder Beitrag muss eine verdammte Autobiografie sein, die niemanden interessiert. Ich stimme zu, Ralph, es ist wirklich nervig und vertreibt NORMALE Leute. Als ob er denkt, ist es wirklich traurig. Deshalb beteiligt sich niemand an diesen Threads. Der alte, dünne, kränkliche Mann liegt falsch, wenn es um den VESC-Wechselrichter geht oder darum, was FOC-Kommutierung und KI im Jahr 2025 bieten. Wenn er falsch liegt, greifen sie auf Trugschlüsse zurück. Sie sind über 70 Jahre alt und können sich nicht reif verhalten oder diese einfachen Drehmomentberechnungen durchführen, denen Bastler folgen können. Stattdessen. Ich schätze, sie brauchen Trugschlüsse, weil sie schlauer sind als alle anderen??? Nach ihren eigenen Maßstäben schmeißen sie herum, haben noch kein einziges Geschwindigkeitsflug-Event gewonnen und seit über 20 Jahren kein einziges Modell irgendeines Typs geflogen. Nur ein alter, einsamer Bastard, der von seiner genervten Frau zu Hause gelassen wurde und keine Freunde zum Reden hat. Sie können in jedem Jahr ein einziges Video finden, in dem sie jemals ein einziges Modell gesteuert haben. Die meisten Leute in den Foren waren noch nicht einmal geboren, als sie das letzte Mal bei RC aktiv waren.
Dieser einsame alte Bastard ärgert sich, weil die Leute ihre Ergebnisse objektiv mitteilen, aber er kann zur Hölle fahren, weil er dazu nicht in der Lage ist, ohne sich wie eine Schlampe zu benehmen!
Er redet so verdammt viel, dass sein dummer Arsch nicht gemerkt hat, dass die Berechnungen zu seinen Gunsten ausfielen.
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The poster doesn't know anything about modern inverters apparently because the APD and KOMAR are both motor agnostic. You cannot set the pwm of the APD or many others manually at all. The recorded EMF has nothing to do with tuning the band width ratio of such an inverter. In all their history. They have never designed a FOC inverter or commissioned one in an industrial setting. The Drs that develop the motors and inverters do not operate or serve rc models in competition at all. It is he most ignorant form of fallacy you are burdened to hear. If racing was a metric they could have shut the hell up in the mid 80s coz its been that long with brushed power and 150 plus miles per hour ago. They can even make it around the damn course in 2025. And old fool typing straightaway records in 2025...'
My lady and I laughed so hard and were absolutely astonished by the lie about Jim.....
See the agnostic inverter you cannot change PWM with
The pro cost 3 times Thomas go cart inverter.
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Here is the first answer to the fallacy and ignorance. A motor agnostic inverter. You will not set the timing or PWM on this proprietary FW so let the inverter ignorant poster talk about Stefan's Merz sensorless 6 step design from 20 years ago. It is absolutely ignorant nonsense at a keyboard. The poster hasn't built a FOC drive a BLDC inverter or even a brushed one.
APD HV Pro ESC
The HV Pro Series of ESCs are APD's high performance, small footprint products, offering maximum results for your use case.
The APD developed (proprietary) firmware ensures unmatched low-throttle and starting characteristics. Ultra-smooth starting and ramp-up characteristics ensure your drive-train is safe. Features include PWM-frequency dithering to avoid PWM-commutation synchronisation, adaptive motor timing advance and proprietary developed Active Phase-Current De-magnetisation (APCD). APCD, along with Synchronous rectification ensure maximum ESC efficiency is achieved.- Designed and manufactured in Australia using only the highest quality components, ensuring no sacrifice in reliability.
- Aerospace-grade ceramic capacitor bank for lowest possible ESR and maximum reliability. No more dried up electrolytic failures
- Standard PWM input up to 500HZ
- Auto PWM frequency
- Auto Timing Advance
- On-board 16 MB Flash memory
- Data-logging for Voltage, Current, Temp, Input Duty, Output Duty, eRPM, Phase Current
- Firmware upgradable through USB port
- Up to 400 Amp continuous current*
- Up to 600 Amp burst current
- Up to 24S capable
- True 12-Bit throttle resolution
- Feed-Forward compensator
- 1,000,000 eRPM
- Highest power density
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PWM Dithering
"Nowadays power-switching electronics exhibit remarkable performance enhancements, and switching frequencies are constantly increasing to meet the requirements of modern power conversion systems. This presents increasing challenges in the field of control techniques. Digitally-controlled Pulse Width Modulation (PWM) generators make a trade-off between switching frequency and duty-cycle fine tuning. Achieving both high resolution and high switching frequency implies that the control circuitries operate at high frequencies. This application note presents a dithering technique that enhances the PWM resolution while keeping the same switching frequency and operating frequency for the control circuitry."
~ST~
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Talega is another industry leading FOC drive algorithm that will learn the motor parameters and Propeller dynamics identification
The parameters found by this procedure can be used with model-based controllers, such as the incremental nonlinear dynamics inversion velocity controller.
The parameters can also be used for sizing the drivetrain for a given application. As the propeller/fan torque is a function of its torque coefficient and its angular velocity, one can predict the torque at the shaft and the angular velocity for the given lift; next, knowing the motor parameters, the motor controller, DC link, and battery requirements can be deduced. For more information on this, refer to the Drive power transfer equation.
The torque and thrust coefficients are strongly dependent on the airspeed. For the dynamics identification to be valid for forward flight, the test should be performed in a wind tunnel.
This is not 1985 early 90's inverter tech
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Here are the necessary model parameters for Talega...
It is also very easy to measure these things and calculate the flux linkage, D and Q inductances then manually enter them into the inverters parameter settings in the open source firmware but The key motor parameters can be automatically measured by the motor identification command. However, better performance for high-quality motors is achievable by taking the required parameters from the PMSM parameters spreadsheet at https://docs.google.com/spreadsheets/d/1Is3rCVp-Ibe1MELjCmrP3yA8ozJ6n9Sme-N9w2nRsi0/
How is a person an expert on drives that cannot handle this???
Fallacy wont get you to the mountain top with me...sucka!
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Hargrave Technologies' FOCAL algorithm sets a new standard for sensorless motor drive, optimised for the most demanding UAS applications. FOCAL extends the low-speed efficiency of FOC to the high-RPM performance of trapezoidal drive, with no tuning required.
While FOC can see higher peak efficiencies in a perfectly tuned combination, this is rarely true in real-world missions. Diverse flight profiles, environmental conditions and production variations all reduce the practical efficiency of FOC.
The pur·vey·or of fallacy does not know anything about these inverters I'm showing you now or the capabilities. Hargrave has a 60 Volt 200 amp a liquid cooled 120 volt 400 amp burst and air 120 volt cooled 300 amp burst inverter on the way with the absolutely new and proprietary FOCAL commutation algorithm.
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Hi Hubert,
a Lehner 2050 can achieve what power with 560 g? In Jörg's boat he has more than 18 KW of power throughput. What do you think, idiot, how can you allow yourself to deal with others and call them all sorts of expletives? You really expect someone to still be your friend. You are the most ridiculous person on the planet. Unbelievable because you have nothing to show for it. Get kicked out of every job, no one wants to have anything to do with you. This is YOUR work. everything you achieve is NOTHING.
Happy Amps Christian
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Originally posted by Chxpress View PostHi Hubert,
a Lehner 2050 can achieve what power with 560 g? In Jörg's boat he has more than 18 KW of power throughput. What do you think, idiot, how can you allow yourself to deal with others and call them all sorts of expletives? You really expect someone to still be your friend. You are the most ridiculous person on the planet. Unbelievable because you have nothing to show for it. Get kicked out of every job, no one wants to have anything to do with you. This is YOUR work. everything you achieve is NOTHING.
Happy Amps Christian
Jetzt hat sich das Ziel auf einen 2050 im Boot eines Typen verschoben, der ihn verklagen wollte, weil er Leuten von seinem Boot erzählt hat. Das Boot ist nicht damit verbunden und hat nichts mit Außenläufern für Flüge zu tun. Der 1530 TL4-Rotor kann direkt mit deinem 2050 konkurrieren und hat einen höheren Wicklungsfaktor. Er ist auch kompatibler mit einem BLDC-Antrieb, da es sich nicht um eine Sinuswellenmaschine handelt. Und die Drehmomentberechnungen sind immer noch völlig irrelevant für das Thema. Du erwähnst immer wieder JAGS, aber nicht, dass Jörg sagt, du fährst keine Boote und nervst sie nur bei den Veranstaltungen. Es ist lustig, weil wir über Wechselrichter-Kommutierungsschemata gesprochen haben und jetzt sind wir bei Jörgs 2050. Wie immer völlig irrelevant
Du bist ein Freund? Sieh mal, Arschloch, du bist derjenige, der sich entschuldigt. Es ist mir scheißegal, ob ich dein Freund bin, du rassistischer Bastard! Du könntest heute sterben und ich würde kein Gramm Schlaf vermissen. Du hast mich völlig verwirrt und kannst direkt zur Hölle fahren, wenn du denkst, dass ich Wert darauf lege, mit dir zu verkehren. Du bist ein totaler Vollidiot.
Wenn du mein Freund wärst, du blöder Idiot, hättest du meine Nummer und meine echte Adresse. Verpiss dich, Kumpel. Einen Freund kann man nicht kaufen und das ganze Forum dort hasst dich. Sie reden nicht mit dir, sie sperren deinen blöden Arsch in jedem Unterforum aus.
Du wünschtest, du verstündest den Aufstieg meiner beruflichen Karriere, aber auch hier spricht nur ein neidischer Kerl über Dinge, von denen er keine Ahnung hat. Ein echter Hasser, der auf einem Sofa in Bayern sitzt
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