1. Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
    Dismiss Notice

Re-winded bldc motor (RC) not spinning

Discussion in 'AVR' started by polashd, Nov 6, 2013.

  1. polashd

    polashd Member

    Joined:
    Jan 22, 2011
    Messages:
    87
    Likes:
    1
    Location:
    Bangladesh
    I’ve re-winded a (RC plane) bldc motor (1800KV, 12 pole, 16 magnets) with 26AWG wire 13 turns on each stator.

    Before re-winding the motor was ok.

    Now it doesn’t spin. Initialization with esc (and PWM) done properly (the tones of settings are as it should be).

    But when I try to actually run the motor, it just shakes with high frequency beeps for few seconds and stops (seems it’s getting signal from ESC & trying to spin but can’t for some reason).

    I’m using MCU (Atmega32) PWM signal (duty cycle controlled by a Pot(VR).

    info: ESC(20A, non-branded) and Lipo battery(2s, Mystery 2800mAh).

    Can anyone please help me?

    note: I'm not using any remote control
    Before re-winding it was delta now I re-winded it as star configaration.
     
    Last edited: Nov 6, 2013
  2. shortbus=

    shortbus= Well-Known Member

    Joined:
    Mar 23, 2008
    Messages:
    1,214
    Likes:
    75
    Location:
    youngstown, oh
    Doesn't "Star" use a different controller configuration than "Delta"? Always thought 'star' was a single winding on and a 'delta' was a two winding on configuration.
     
  3. misterT

    misterT Well-Known Member Most Helpful Member

    Joined:
    Apr 19, 2010
    Messages:
    2,697
    Likes:
    368
    Location:
    Finland
    No. Switching from star to delta gives you different speed/torque line. Delta gives you more torque and less speed. Star gives you more speed and less torque. That is practically the only difference.
     
  4. dave

    Dave New Member

    Joined:
    Jan 12, 1997
    Messages:
    -
    Likes:
    0


     
  5. Ian Rogers

    Ian Rogers Super Moderator Most Helpful Member

    Joined:
    Mar 28, 2011
    Messages:
    9,166
    Likes:
    910
    Location:
    Rochdale UK
    ONLINE

    Star is a single winding per phase whereas delta is two phases per winding..
     
  6. shortbus=

    shortbus= Well-Known Member

    Joined:
    Mar 23, 2008
    Messages:
    1,214
    Likes:
    75
    Location:
    youngstown, oh
    Sorry got it mixed up, my bad.

    polashd, when you were rewinding, did you wind all of the poles the same? All clockwise or all counterclockwise ? If a coil is wound wrong in the direction, it would make the motor fight it's self when trying to turn.
     
    Last edited: Nov 7, 2013

Share This Page