How do brushless motors make torque?? (Episode 5)

This week we discuss how motors sense position, how the hall effect works, and how brushless motors produce torque. Like, comment, and subscribe if ur into it.

Foot Notes:
Not all BLDC motors have hall sensors, in fact many that are not used for traction applications do not (drones come to mind). Controllers just generate a rotating magnetic field and let the rotor do its thing. Position can also be sensed from the BEMF so if steady state rotor position is not important hall sensing will be omitted. However, for position control, or torque control this is the standard/minimum.

[applebusch]

Thank you for this. I've been looking for something like what you're doing. Keep up the good work.

[rocktcatU]

Also a Redditor here, your channel is going to blow up soon with this kind of content.

[kingkappa]

Hello - Thanks for video. The technical term is a Star Winding configuration @ 6:50 in the Video.If three coils are connected end to end - it's a Delta.

[luqmankhan-ymgx]

Wow. I cant belive the amount of views this has!
Makes me loose all faith in youtube.
So much effort. Great animation. Great voice-over. And really appreciating the joke at the beginning of every video.
Subbed.

[cesarfranciscodelagarzacue]

All the videos are amazing, congratulations for this work!!

[rengarmatira]

I came from Reddit.. Would you do the same thing for generators?

[philipokke]

What program did you use to make the animations? By the way this is so informative!

[raquelmarriott]

Not an engineer yet this is still interesting somehow 🤔😂

[iLikeFTS]

Thank you so much for your great explanations!! Just one question: Are there some books about bldc/pmsm motors you would recommend? I'm currently writing my bachelor's thesis and can't find something as detailed as in your videos.

[mkacytchannel]

Is there a way to run bldc motor without hall sensor.

[corruptedflakes]

Nice animations. Unfortunately, there are mistakes in the content.

6:09 (left) That is an odd way to define the current vector to say the least. Where did you learn this?
6:55 That is not a winding diagram. Winding diagrams give you the physical configuration of windings. You have just a schematic there.
7:07 Resistors? Maybe if you took your coils from a Moccamaster. You would rather want to use inductors in your schematic. Even if the power factor of the machine is relatively close to unity (acting close to a resistor), as is the case with many machines with surface magnets and low inductance, the phase windings are not resistors. Blasphemy from an electronic engineer's view.
7:50 Magnetic field vector 90 degrees "counter clockwise" from the above oddly defined current vector? This is the result from defining the current vector so oddly and fitting it to your "winding diagram". Try defining the magnetic field vector collinear to your current vector (your magnetic field vector is correct, and the current vector should be in the same direction) and see how your schematic starts to make sense even from a physical point of view. Suddenly, your schematic's inductors are aligned with the actual windings of the machine and you can even use the vectors directly to control the machine.