DIY How to install Hall Sensors on a BLDC Motor

[@Debraj1978]

Forget the motor, I am looking at the view outside the window. With such a natural view, new ideas will definitely come up in mind.

[@lancemenke2728]

I see 6 thumbs down mind blowing this is some of the best information of this dyi build type done exceptionally well. He checks the output and the alignment it is as perfect as can be. This is a very efficient for weight to power design. Anyone who has a clue should be impressed with the quality and his comments are chosen without chatty unnecessary bs.

[@mrkeopele]

his separating jig is amazing, mine just slam together

[@mintudoku9375]

Sir..... your video is good... coj its short and interesting... no waste time watching and learning alot..

[@Debraj1978]

4:05 = hall sensor senses the flux of magnet. While back EMF has a quadrature relation with flux (e = N*d_phi/dt). Hence, I am not sure, if the hall and back EMF should be in phase.

[@safimohamadreza510]

me too

[@donaldwright2426]

Hi Debraj, notice where are the hall sensors installed, there between the teeth. As magnetic senes are HI, this is where you on the fire the coil. After, when it's LO, you want to fire the coil again but by reversing the current flow in the coil. This will give the push-pull effect of the magnetic fields of the stator coils on the rotor. I hope it helps!

[@BosisofSweden]

Interesting how many comment below complains in this mans english and the fact that you don't speak it and wants german texting or that he should speak german. Why don't you ignorants just lern to speak english like the rest of the world. There is nothing wrong with this mans english he is just a bit soft spoken. I think he is also quite a genius! Get some of your own friends and ask them to make a german texting to this video and help this man out instead of complaining cause you cant benefit from his work due to your own short commings.

[@mrkeopele]

americans are like ignorant spoiled children after visiting Europe. I am so impressed with the advancements in the cultures that are centuries older than "merca"!!

[@wengueycheaw3882]

hi, is there a guide to how to work out the placement of the sensors you can direct me to?

[@iamthejohn7064]

Thankyou for this video. I have been thinking about rewinding existing motors to change their output characteristics and I found this video very informative.

[@jaycal1920]

Do you think centrifugal force effects the magnetic field? 2:16 Watch the screws after you spin the wheel.

[@MrNigel1340]

Thank you for an extremely informative video, especially the extractor tool, this will stop potential damage to the motor and prevent trapped fingers, regards Doc Cox.

[@mike_oe]

yes, that tool is really clever :)

[@lemontea2065]

Can you tell how to calculate the spacing of hall sensors for different winding schemes?

[@lemontea2065]

@Domino Ryan I have a stator with 27 slots (and 30 magnets): where do I put hall sensors?

[@lemontea2065]

@Domino Ryan Thank you for your replies! But I had meant where to install hall sensors in terms of stator slots - how far should the hall sensors be installed from each other, how many slots in between each sensor? (for a brushless motor for scooter).

[@walidguendz9025]

What value of capacitor do you want to insert in the hall-effect sensors?

[@mrkeopele]

very good, let me ask you this, if my motor starts to rub when hot, what is the best way to align the rotating mass inside with the covers and housing to center it. i have tried just random positions by changing the positions of both covers, but that is not scientific and precise. is there a better way to verify the motor is centered?

[@davedoesstuff3550]

Would like to see a video of Controller and the programming:)

[@mrkeopele]

yes please

[@AshishKumar-qe4hq]

Hello sir if phase angle is not correct what can we do?

[@zdenekberan7002]

I have a question. Does a magnetic field of stator have influence on the hall sensors?

[@forschungsbuero]

In the gaps between the stator teeth the stator field can be neglected. The magnet field is much stronger there.

[@phpCypher]

I think the blocking capacitors prevent false positives

[@dangerous_ngga]

+forschungsbuero HELLO! Can you tell me what is the price of motor ?) Or what is the price of whole every its parts ?)) Thanx ))

[@kelly83303]

thank you for the video, Where did you purchase the parts?

[@bobsnabby2298]

He's not willing to tell as so many people here have asked the same. I do not understand. Why to show something that is being built, and then completely shuts down the information about it...

[@thosewhowish2b693]

I strongly advise against soldering SMD components like this, especially capacitors. They crack very easily with the slightest mechanical stress and unequal temperature. Having a small perforated board is much better, and I would use solder paste and a hot air gun if possible. Thanks for the tutorial!

[@forschungsbuero]

Embedding in epoxy should reduce that problem.

[@arifuzinatto]

Amigo quantos pólos você está usando nesse motor

[@offgridd]

Richtig sauber gemacht!! Sieht gut bearbeited aus! Habe doch einige Frage: Warum nicht die n+3 method (ich sehe 42 magnete und 36 spule - 14-12 verhalung). Woraus besthehen die 4 halter des ausenrings?. Bitte gern contact via pm!

[@patrickmckowen2999]

Very interesting. I wonder how cost effective this is with just purchasing a completed motor today, and you need an oscilloscope! Cheers

[@samuel-br.man__3571]

Actually, it’s easier to build a bldc rather than a comutated mf

[@shravanrahmatker2247]

Is it necessary to keep same number of rotor and stator poles?

[@programista_w_garazu]

Hi, how you determine where put hall sensors ? could you explain it to me ?

[@forschungsbuero]

There is no easy answer, because it depends on number of slots AND number of magnets. I use a free tool called "Powercroco Bewicklungsrechner" (you can google it). That will give you the distribution of phase windings. Then you put one hall sensor in one phase slot, to have a so called 120 deg pattern. But there are also other ways to do the same job. I always put the sensors in the slot spaces. But I have also seen motors with milling machined slots in the center of the teeth. What counts at the end is, that you can measure the correct timing with an oszilloscope afterwards for each phase.

[@aquatrax123]

When you manually turn the motor why is one channel a square wave and the other a sine wave? Or was the square wave interpreted by your motor controller?

[@Hunterlegoking]

The square wave is the digital output (on and off) of the hall sensor. The sine wave is the back EMF of the coils. The square wave is interpreted by the controller to give a more precise reading of the rotor's position for smoother and more efficient control of the motor.

[@durmusuygun8819]

Dear Sir, I congratulate you for this nice work. I have a 24 slot/26 pole BLDC design (star winding pattern). But I am having some troubles in hall effect placement. I put the sensors per 8 slots. Do you have a suggestion?

[@forschungsbuero]

Thats a different winding pattern with 4 coils in serial for each phase! Put the sensors between tooth 1-2, 5-6 and 9-10. Always check the timing for all 3 sensors with a 2-channel oszilloscope (each sensor signal and corresponding back emf must be in phase).

[@forschungsbuero]

You have a completely different winding pattern than on my motor! First you have to check where your slot 1 is. It is at the beginning of phase wire A. Put sensors in slots 1, 9 and 17.

[@caheesayee7535]

Congratulations for that nice teaching video. I have a different star winding pattern too. My motor has got 24 slot and 22 pole and winding will be two layered. How can I put the hall effect sensors? Also I want to turn 20 number of strand 0.7 mm diamater wire parallel together. What do you think, is it possible?

[@renequintana8921]

Very interesting your video. I have a question for you. Why did you choice por hall sensors into the core, like a normal e-bike BLDC motor (hard task to install sensors) instead put external sensors (optical or magnetic) instaled on shaft directly, obviusly separated 120° or 40° or 60°?. A big regards from Argentina

[@timkahn2813]

do you think i could use the fly wheel od a auto transmission as the hub?

[@martiniafg]

hi guys im working on sparta ebike. do i need to connect that sensors? i dont have much space for all wires in metal tube, so i want to leave them not connected. what do they do in real world?

[@pleymo46]

Hi you have a picture for the hall capteur conection? Thank you for the reply. Thank for your vidéo.

[@juanrf4781]

Hola, me gustaría saber la configuración de embobinado de motor brushless con sensores hall. ..saludos.

[@Pilot_405]

I have found this stator and rotor on many websites including those you said you bought them from. But no websites allow for the open purchase of the stator or rotor. Can you help with some more information as to how I can buy the rotor/stator, or where I can find similar rotors/stators? Thanks.

[@medokhrowe6704]

hello, can you help me with the hall sensor placement? the motor i have designed is 36slot and 30 pole(inrunner, AabBCcaABbcCA... pattern winding).

[@whatthefunction9140]

why was that tool needed to put the stator on the rotor?

[@forschungsbuero]

For tiny motors you can put the rotor on the stator by hand. If you'd try it with that big motor, it would crash with a bang and probably damage bearings, magnets or other parts.

[@whatthefunction9140]

oh I see. I looked like it was for centering it.

[@1MrRose]

What's the part number for the sensor?

[@anibalvilelarj]

Congratulations ! It is a very good idea and job. Please, could we consider to design an external circuit, which reads BEMF and generates the proper HIGH/LOW signals, exactly as if hall sensors were installed ?

[@3deeguy]

I'm sure you can build a sensorless motor but it will take more work. I tried to design a sensorless drive circuit but my motors are delta wound and I couldn't figure out how to detect the zero cross. I only have a dual trace oscilloscope. If I had a four trace scope I could see everything. If my motors were 'wye' configured I think I could have done it. If I try again I'll just buy a chip that detects the zero cross.

[@maukaman]

That’s what sensorless controllers do isn’t it? Most cheap ebike controllers can run sensorless by detecting the back EMF on the wire I believe.

[@anketbhoir4472]

In that bldc motor what is guage of wire?

[@jehirulislam1029]

how we will know , which is the right position for the hall sensor ?

[@forschungsbuero]

It depends on your winding pattern, so no general answer is possible. The sensors should be 120 deg electrical (!) apart.

[@otixtools]

can i use 3144 unipoler hall sensor?

[@dharani312]

I have the same doubt. But I think: Each motor has different hall sensor. They use digital sensor but u have to check data sheet of your old sensor and find if it's unipolar or bipolar and use one relevant to it. Don't use linear sensor, they are slow switching and for throttle only

[@carlosfernandes5299]

Hallo, Ich bin seit Tagen dabei zu versuchen die Hallsensoren in eine Lichtmaschine (Die ich als Bldc nutzen will) einzubauen, vergebens... ich werde verrückt. Habe die sogar um 60° versetzt eingebaut, und trotzdem nichts. Ich habe ein Kelly KLS7212S Controller, d.h. der Motor wird zuerst mittels Hallsensoren erkannt (Indem der Motor in mehreren Richtungen gedreht wird, und die Sensorsignale erfasst werden). Im Internet findet man nichts Konkretes und im Detail erklärt... Wie würden Sie vorgehen?

[@forschungsbuero]

Also erstmal die Anzahl der Slots am Stator und die Anzahl der Magnetpole am Rotor abzählen. Dann daraus die Verteilung der Phasen bestimmen. (Google: Bewicklungsrechner). Dann je einen Sensor nach der ersten Spule einer Phase platzieren. Und hinterher mit dem Oszi die Ausrichtung prüfen. Nicht einfach nur Versuch und Irrtum per Motorcontroller.

[@carlosfernandes5299]

@@forschungsbuero Danke

[@신세계-v3z]

I watched the video well. Where can I get this bldc motor? Thank you.

[@forschungsbuero]

Check my website Forschungsbuero.de and send an email.

[@qiaoliji7293]

Hi, great work for me. I want to know that which type hall sensor for this motor? How many poles this motor? When you replaced three hall sensors external, could you give me some advice? I have added hall sensors, but the motor did not work. My hall type is 413 OH18 and 41F. My motor has 42 poles. Thanks.

[@dangerous_ngga]

coil diameter ?)

[@anketbhoir4472]

What is the resistance of that winding?

[@forschungsbuero]

I did'nt measure.

[@JF32304]

Where did you buy the hall cable from? 5 pin shielded.

[@forschungsbuero]

Conrad Elektronik, Germany. But you'll find it also on Digikey or Mouser.

[@humanitynow1565]

Did you sell motors ? Ist das fur kaufen ?

[@applerackrepair7028]

can i use 3144 hall sensor(unipoler)

[@forschungsbuero]

Shure, they will work fine.

[@mehmetmuratpolat7465]

Hello Friend please give the engine information you have done want to try

[@anketbhoir4472]

I want to know about driver circuit for that motor

[@forschungsbuero]

Kelly Controller BLDC 600A.

[@wimaxphone]

where can you buy the tool ?

[@Suprem3GamerDamianWinchester]

You mean transistors?

[@arifuzinatto]

olá amigo estou com um projeto similar,como você enrolo o estator

[@fehden]

Wo finde ich die Anleitung?

[@anketbhoir4472]

What is the number of poles?

[@forschungsbuero]

36 coils, 42 magnets

[@chaenel44]

There are 36 coils (12 coils per phase), so why there are 42 magnets?

[@lucal6166]

coils and magnet count are not dipendent with eachother, in general having more magnets is better beacause there will be less cogging in the motor, but with some calculations it's easy to find the most efficient number of magnets per each coil configuration

[@MrPounal]

was it delta or star winding

[@forschungsbuero]

A delta connection.

[@forschungsbuero]

Delta connection.

[@MINDLE55EMPIRE]

How much watts would this be?

[@forschungsbuero]

Approx. 12 kW at 52 V

[@dangerous_ngga]

+forschungsbuero What is it depends on ?)) Coil ?) How do you know it ?)

[@qiaoliji7293]

If I install hall sensors like your video, will the motor work? In the process of installing, did you need a hall circuit board?

[@Rafaeljotiar]

You never explained about how many poles are and how many magnets and the grade of magnets and the size of magnets

[@fuevo19]

Vorschlag für die Aufnahme, um eine helle Aufnahme, lassen Sie die Helligkeit immer hinter der Kamera. Die Hintergrundgarten ist zwar schön, ist aber nicht so wichtig und interessant als der Motor.

[@timkahn2813]

i think i would put the connections in a a+b mix not shrink tubes and what ever

[@nguyenvanquoc1650]

How many pole /?

[@forschungsbuero]

36 coils, 42 magnets

[@sohailtanoli2890]

is motor ko banana ka tarika batay

[@ИгорьГудков-щ3щ]

Guten Tag. Wie kann ich mit dir reden?

[@aykutbekarbrushlessmotorpm1665]

Winding 0.50??? Spir ????

[@rasimbot]

Lemons in Germany?

[@forschungsbuero]

Nope, Canary Islands...

[@YudisSetyawan]

Nice view,i like it

[@constantinnitu9382]

Hallo, haben Sie vielleicht Ahnung wo kann ich ein richtig Controller für ein Direkt Drive Motor von Samsung,der Motor kommt von eine Waschmaschine,ich brauche es für ein Projekt Hir habe ich ein Video,der Controller ist ein drei Phase Driver(Danfos vlt2800 0-1000Hz) aber für Asynchron Motor 3Phase: kzbin.info/www/bejne/i3jUd2WFj9ipkNE Mein Problem ist dass,wann der Motor läuft und ich versuche es bremsen stoppt von drehen springt von der Magnet Fehld und macht Laut,vebraucht auch viel etwa 300 Watt leer lauf etwa 1400Rpm Vielleicht können Sie mir helfen mit freundlichen Grüsse

[@becongcabahug7016]

not showing the direction of winding in detail for the beginner

[@Rafaeljotiar]

I really don't understand how such motors spin! If the current is AC the electromagnetic coils change from north to south pol 50 times in second while the permanent magnets has fixed polarity

[@АлексейКастевич]

Rafael Jotiar the switches are rotor position-dependant.

[@speedsterh]

I don't think it's a good idea to glue the sensor with epoxy glue. Hall sensors do fail, particularly on an ebike with regeneration. With that type of glue, removing the dead sensor will be a problem. I use neoprene myself.

[@SaddamHussain-he9xc]

How are you I take

[@qiaoliji7293]

Is 36N42P the motor?

[@samuel-br.man__3571]

The Magnet is so strong the screw moved

[@gikelevageabasedesplantes4128]

good evening sir please i can have your facebook account?

[@bangotoy1945]

Berapa lapis email

[@mehmetmuratpolat7465]

please write I do not speak English

[@maximilianlindner]

Sänk juh!

[@v.e.7236]

Very poor video, due to the sunlight and shadow obscuring what you were doing. I tried to follow your progress on this motor, but your instructions are difficult to understand, along with incomplete information.

[@elmarlang8085]

Wertloses Video. Dafür ist mein Englisch nicht gut genug. Da der Sprecher eindeutig ein Deutscher ist, wie wäre es mit Untertitel oder einem Video in deutsch.

[@forschungsbuero]

Ja, tut mir leid. Es können weltweit aber doch mehr Leute englisch als deutsch. Wenn ich mal zuviel Zeit habe, mache ich noch Untertitel...

[@erfindergeist4390]

forschungsbuero Da kannst du auch deine Zuschauer aus dem deutschsprachigem raum um hilfe bitten :)

[@vijaysharma-mq1kl]

elmar lang

[@janospeh9503]

Weil Dein Englisch nicht gut genug ist es zu verstehen, ist das Video wertlos? Logisch.

[@A4_Cabrio]

Wertlos für dich vllt ?

[@shitheadjohnson2797]

is this for angle position sensing?

[@forschungsbuero]

Yes, some motor controllers requiere Hall sensors for position sensing.

[@stevkolasab3709]

does the hall efect sensor need to touch the winding?

[@gmplascencia]

No, the hall sensor just get info from the magnets. in this example is between two coils

[@stevkolasab3709]

@@gmplascencia thanks

[@stevkolasab3709]

@@gmplascencia can i run this motor without hall sensor?

[@gmplascencia]

Sure That depends on the controller you choice. That Motor is powerfull. You need to think about the application for it to select the right choice for you.

[@stevkolasab3709]

@@gmplascencia can you recomend me pls some good cheap controller? Thanks