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Issue with Sensorless BLDC motor using microcontroller

Discussion in 'Microcontrollers' started by RenesasT, Jul 10, 2017.

  1. RenesasT

    RenesasT Member

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    Hello guys,

    I am in big trouble with sensorless BLDC motor project. I am trying to achieve the control of sensorless BLDC motor using microcontroller.

    I am using renesas microcontroller. I am able to run the motor but not getting first start.

    I am trying by sequence changing with particular delay but its not working.

    Once I rotate motor with hand, the motor is starting and then control is through back EMF.

    At back EMF stages the motor is working properly. I am worried about my project just because of start up issue.

    Please guys help me with the code to start the initial rotations.

    Seriously I am worried about my project.

    Requesting you all to reply me.
     
  2. cowboybob

    cowboybob Well-Known Member Most Helpful Member

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    Welcome to ETO, RenesasT.

    Please provide, at the least, your controlling code.

    And have you investigated this Renasas resource? Scroll down for example code downloads.
     
  3. alec_t

    alec_t Well-Known Member Most Helpful Member

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    Guys, the TS now has his motor running. This topic has been discussed over at AAC.
     
  4. dave

    Dave New Member

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  5. RenesasT

    RenesasT Member

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    Hello Guys,

    I am able to drive the motor initially. But the thing is that, I am not getting the torque.

    Please suggest me.

    I am in big trouble.
     
  6. Ian Rogers

    Ian Rogers Super Moderator Most Helpful Member

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    Make your mind up!!! I just seems that this is homework, and you have nothing!! You give no indication of which language! "renesas microcontroller" isn't a lot to go on!!! If you need help, you need to re-read Cowboy Bob's post and help us by posting what you have.... As I said.. I should imagine you have nothing at the moment!!
     

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