supply for a BLDC motor

Discussion in 'The Projects Forum' started by Manjaks, Apr 12, 2012.

  1. Manjaks

    Thread Starter New Member

    May 2, 2010

    few days ago I received the Magic-pie motor (BLDC type, 1 kW) which I bought for my project - research of BLDC motors in transport. By default the motor comes with a 24/36/48V battery (depending on motor voltage).
    But I need to run this motor from a continious power source. I tried to supply it via 3-phase rectifier + parallel capacitors to get a perfect DC. Unfortunately the motor does not want to work in that way.

    My question is - why the motor does not work without the battery... and how can I get him to run thru rectified voltage?

    Here is how it looks -
  2. jimkeith

    Well-Known Member

    Oct 26, 2011
    What happens when you connect the 3 phase rectifier to the battery as a charger?
  3. Manjaks

    Thread Starter New Member

    May 2, 2010
    umm there is the problem, I don't have the battery (it comes by default with motor, but I did not buy it because it was quite expensive), so I have to run the motor without it.
  4. shortbus

    AAC Fanatic!

    Sep 30, 2009
    May seem like a dumb question but, did you also get the controller? A BLDC motor will not work with out the controller.

    Also you say your power supply has "parallel capacitors" to give "perfect DC" what is the value of your capacitors?