BLDC Motor - DIY Electric Car Forums
Go Back  

DIY Electric Car Forums > EV Conversions and Builds > Electric Motors

Register Blogs FAQ Members List Social Groups Calendar Search Today's Posts Mark Forums Read

Thread Tools Display Modes
Old 08-27-2012, 01:29 PM
assaf_malki assaf_malki is offline
Junior Member
Join Date: Aug 2012
Posts: 1
assaf_malki is on a distinguished road
Default BLDC Motor

Hey guys,

I have a BLDC Motor which I try to control using Xilinx FPGA.

It's a sensor-less motor and I try to close a loop using the Encoder.

My signals to the Motor are 3 Halls signals, PWM, Brake and direction.

The signals are going through the following component FjAA& edia%2FFiles%2FDatasheets%2FA3932-Datasheet.ashx&ei=AUg7UPK3NqGk0QXU6YHYCQ&usg=AFQjC NHvQ0cn-MFbhwnHGWcarssfM9HI-A&sig2=3gGAPHprHfl9IvWdN39tVw&cad=rja

and at the end I get the 3 phases which go to the motor.

So far I've managed to rotate it by closing a loop with the encoder which by that, I get the halls (I chose the halls using the Datasheet I posted above).

I gave it a specific PWM and it rotates.

My first problem is that I actually need to give it the first push (by Hand) for it to start rotating, how can I avoid it?

Another thing is that I only have 6 selection for the halls and by that I divided the space (360 degrees). However I don't understand how can I put it in a middle point, between the flux created and a magnet?

Another thing, what is the relation between the PWM and speed?

Thanks a lot.

Reply With Quote

Share or Bookmark this

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Support DIY Electric Car

All times are GMT -6. The time now is 02:56 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Ad Management by RedTyger