19:14 this motor configuration (6 stator 4 rotor) always' got some issues. It would work better with 2 poles in the rotor, or same 4 rotor poles but with 12 poles in the stator, so that a sort of sinewave could be simulated and prevent magnetic lockings. Imagine accelerating this 6/4 asynchronism 19:47.
All live current possess some degree of electromagnetic property, when that current is "coiled" the electromagnetic properties of the current stack, eventually that stack will be strong enough to repel magnetic poles. As for the winding, clockwise or counterclockwise creates a "north" or "south" electromagnet to repel a "north" or "south" magnet. Hope this helps.
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was that ca glue?! always use epoxy. also, you want to have an iron core at the center of the coils. you also want to make sure all your coils are equal for balance. the way i do it is to make a standard coil bobbin that will fit into a printed frame. that way i can make the coils without having to maneuver and risk damage to the insulation. i would also use a finer gauge wire. your wire is for some seriously powerful motor. i am not sure i would put that in a printed frame. cheers 🙂
I have a question, at our lectures in university they teach us that when winding motors each phase need to have an opposite direction but when I see DIY brushless motors videos they make all the coils in the same direction, is it ok because they're using an esc? I don't get it.
There are several ways to make anything - but alternating winding directions (changes electromagnet polarity) are NOT necessary because like of an ESC, though they would improve efficiency.
@@5ravee5 think of it in terms of forces. there has to be a push or a pull or ideally both. it is like half versus full rectified waves. the real world issues with coils cause problems alternating flow quickly so some basic designs use alternate windings to create this. these are generally used in texts to illustrate the principle. alternating poles of magnets are used for this reason. you can make a push-pull motor which has ideal torque but has significant rpm limitations dues to the flow switching limitations in coils. designing a finely tuned motor is not easy. very much like three body physics, it is an approximation at best. it is about combining the right compromises for the specific use. this is why there are so many variations on the theme out there. you can spend lifetimes exploring each of the variables. i have been working on a push pull motor for a fan which is very efficient for venting. the key for that design is the get the most torque out of every mA 🙂
@@TONiT3CH To increase the cross-sectional area of the wire, use several thinner wires folded together, then it will be easier for you to wind. I advise you to wrap the rotor with several layers of thin fiberglass and fill it with epoxy. Instead of fiberglass, you can wrap it with thin fishing thread, it is very durable.
I plan on utilizing patreon for such details, files, tips, etc,. signup today it's free (link in description). I also plan on including all the formulas you need to calculate RPM, Horsepower, etc. (in order).
Electromagnet pull on magnets was stronger than the super glue. Flux gap was 1mm or 0.5mm, when magnet came loose it against the rotor... magnet had no choice but to produce the seen explosion.