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Issue with Sensorless BLDC motor using microcontroller

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RenesasT

Member
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.
 

cowboybob

Well-Known Member
Most Helpful Member
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.
 

alec_t

Well-Known Member
Most Helpful Member
Guys, the TS now has his motor running. This topic has been discussed over at AAC.
 

RenesasT

Member
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.
 

Ian Rogers

User Extraordinaire
Forum Supporter
Most Helpful Member
I am worried about my project just because of start up issue.
I am able to drive the motor initially. But the thing is that, I am not getting the torque
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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