Brushless DC Motor, How it works ?

41 Comments

1. 

   Hours over Hours of lectures and i never got these 4 minutes of comprehension

2. 

   I am 28 years old now and all that damn donkey reminds me of is my parents and Coach Todd, when I was 6 or 7 years old, during swim lessons always promising to not back up once i dove in the water to swim to them. I'll never forgive them. 😒

3. 

   Ok…so what if you reverse the design? Putting the coils in a ring around the permanent magnets so that the center of the ring can be open space, no drive shaft necessary. Or more accurately, the permanent magnets would be fixed onto the ends of prop blades and set into a C-channel ring that holds the motor coils. So rather than having to bolt an existing prop to a drive shaft of a motor, the two can be one apparatus. I also wonder what power differences the two designs might have between traditional and my own. My design will be able to handle an exponentially higher amount of torque than a traditional shaft and bracket drive system, but will it be able to create the RPMs necessary to even achieve thrust? The goal in mind is a FAR 103 compliant ultralight plane that is fully electric, but capable of vertical to near vertical takeoff. I want to be able to put my props INSIDE the wings and on the tail, rotatating the pitch electronically through independently controlled shafts that would also provide structural support in the wings (the props would look like gyroscopes sort of) this would allow my aerial vehicles to takeoff like helicopters but fly like airplanes. Since the dawn of time, man has wanted to fly. I think everyone should be able to. So its my dream to create safe, affordable aerial vehicles everyone can fly for under $20,000. I'm gonna be the Gerald Ford of the sky

4. 

   Excellent explanation and graphic visuals.

5. 

   How does startup occur? Without some initial inertia to rotor doesn't the rotating magnetic field on stator go to fast for the rotor to get going?

6. 

   Can you make a video on electronics controller for BLDC motors

7. 

   good explained video.however i have a question. The tree coil with 120 ° should be energized with AC Current.TRUE or Fasle. Because as i also lear in another source stator that create Rotate magnet fiel schoul be energized with AC Current. why the coils in BLDC are energized with DC Current?????

8. 

   Wow all this time I’ve been studying this and in three minutes I got it. Thank you this video is a huge help

9. 

   Simple, yet engineering genius. Still like old Brushy too😊🇺🇸❤👍🙏

10. 

    Wonderful video.

11. 

    Bonjour lesic vous mettez un titre en français et ça cause english…..c'est oripilant…….

12. 

    If we keep the magnetic on the rotor and coil on the stator so we never need brush and work much better

13. 

    it is literally a nerfed version of AC Brushless, right?

14. 

    Always nice explanation 👍

15. 

    Thanks!

16. 

    Simply Great electrical motor tutorial videos

17. 

    Beautifully discrbed

18. 

    1:47 haha

19. 

    Does this mean some kind of electronic chip is needed to determine when to energize which coil?

20. 

    whien indeed

21. 

    I'm done enough is enough I'm going forward with my life …fuk that family… always discriminate against me and alienate me now u jealous envious

22. 

    But how are the coils connected to the power supply since they are rotating?

23. 

    4:36 everytime I heard Lesics's gratitude at the ending:
    "No, I thank YOU"

24. 

    So its not dc motor?

25. 

    Hii, you wanna super slowmotion click the snail

26. 

    So,more coils=faster and stronger power?

27. 

    Thank you friend. Simple and efficient explanation.

28. 

    좋은 정보 감사합니다……..

29. 

    The advantage of universal motor is it's powerful and it can handle a lot more force more than brushless motors, so they can be used in drills.

30. 

    Why Arabic language not existing

31. 

    if it doesn't have a brush how do you make it move anything? Rubber band? O.o

32. 

    Great video thk y 👍

33. 

    Information to all Indian BE students,
    It's better to quit the BE and start leading with lesics or other you tube videos or better to join a BE in other countries,
    We won't learn anything In india

34. 

    Is the coil considered square, rectangular or round?

35. 

    I am pretty sure hall sensors are used only at lower speeds when bemf is not high enough

36. 

    So the main difference is the outside spins instead of the inside?

37. 

    BLDC motors aren't DC motors at all. They need a motor controller to convert the DC to AC for proper winding commutation. The motor controller takes the place of mechanical brushes in a DC brush motor for commutation.
    BLDC motors are still multiphase AC motors – they just don't have brushes to wear out. They instead use Mosfets which can burn out.

38. 

    Thanks for sharing

39. 

    Superb explanation

40. 

    Good bye brushed motors, now you are history from the past .

41. 

    So BLDC motor is a holy grail of motor technology.