I purchased a BLDC driver board, rated at 36V and 20A.
The idea was to try to power up a small automotive alternator as a BLDC motor.
I forgot about the hall sensor.
I ordered some sensors and don’t see any problem mounting one, even if its outboard on the shaft to start with. The question is is the angular location critical or is the hall sensor just used to verify the speed and prove rotation.
The whole idea is mount this on a mountain bike equipped with a small side car. It's designed to cruise flea markets and swap meets. At present it's in V.9, a bicycle with a 24V geared motor. Fist casualty was my butt. I can't sit on skinny little bicycle seats any more... going to find a bigger seat to match the profile of the occupant of the seat :>)
thanks
paul
BLDC experiment
BLDC experiment
My Grandfather was a blacksmith,
...and It didn't do me one damn bit of good.
Pieces of seven, pieces of seven - A parroty error.<p>The information in this transmission is intended to be totally worthless and devoid of any benefit to anyone with the exception of, possibly, the intended recipient. If you received this communication in error or if you accidentally read it when it wasn't addressed to you, then please immediately delete all of your saved game files and email addresses and then energetically beat yourself about the head and shoulders with a recent technology publication of your choice. All other more intelligent actions taken in response to this information are prohibited, so there.
"To err is human...to really mess things up requires the root password."
...and It didn't do me one damn bit of good.
Pieces of seven, pieces of seven - A parroty error.<p>The information in this transmission is intended to be totally worthless and devoid of any benefit to anyone with the exception of, possibly, the intended recipient. If you received this communication in error or if you accidentally read it when it wasn't addressed to you, then please immediately delete all of your saved game files and email addresses and then energetically beat yourself about the head and shoulders with a recent technology publication of your choice. All other more intelligent actions taken in response to this information are prohibited, so there.
"To err is human...to really mess things up requires the root password."
Re: BLDC experiment
Usually you need three sensors mounted 120 degrees apart. They detect rotation and are used for speed control.The question is is the angular location critical or is the hall sensor just used to verify the speed and prove rotation.
Steve G
Re: BLDC experiment
Thanks Steve
Upon closer examination of the pin out of the board, I identified Ha, Hb and Hc. Those would be the three inputs for the hall sensors.
I'll locate the sensors externally for now or build them into the drive pulley.
I should be able to pull about 1 horsepower out of the alternator.
Upon closer examination of the pin out of the board, I identified Ha, Hb and Hc. Those would be the three inputs for the hall sensors.
I'll locate the sensors externally for now or build them into the drive pulley.
I should be able to pull about 1 horsepower out of the alternator.
My Grandfather was a blacksmith,
...and It didn't do me one damn bit of good.
Pieces of seven, pieces of seven - A parroty error.<p>The information in this transmission is intended to be totally worthless and devoid of any benefit to anyone with the exception of, possibly, the intended recipient. If you received this communication in error or if you accidentally read it when it wasn't addressed to you, then please immediately delete all of your saved game files and email addresses and then energetically beat yourself about the head and shoulders with a recent technology publication of your choice. All other more intelligent actions taken in response to this information are prohibited, so there.
"To err is human...to really mess things up requires the root password."
...and It didn't do me one damn bit of good.
Pieces of seven, pieces of seven - A parroty error.<p>The information in this transmission is intended to be totally worthless and devoid of any benefit to anyone with the exception of, possibly, the intended recipient. If you received this communication in error or if you accidentally read it when it wasn't addressed to you, then please immediately delete all of your saved game files and email addresses and then energetically beat yourself about the head and shoulders with a recent technology publication of your choice. All other more intelligent actions taken in response to this information are prohibited, so there.
"To err is human...to really mess things up requires the root password."
Re: BLDC experiment
wb9hco wrote:...I purchased a BLDC driver board, rated at 36V and 20A...
Underdimensioned. Overstressed. 1 horsepower will take 31 Amperes at 24 Volts. Your board will crap out at that current to yield 1HP.wb9hco wrote:...I should be able to pull about 1 horsepower out of the alternator.
- Abolish the deciBel ! -
Re: BLDC experiment
Arithmetics...
Low forum traffic + frustrating posting* = death sentence for a forum.
*Still getting limbo after submitting a post. By insisting, a duplicate shows up. (As this was and ended edited)
Low forum traffic + frustrating posting* = death sentence for a forum.
*Still getting limbo after submitting a post. By insisting, a duplicate shows up. (As this was and ended edited)
- Abolish the deciBel ! -
Re: BLDC experiment
One picture=1,000 Words.....
Len
“To invent, you need a good imagination and a big pile of junk.” (T. Edison)
"I must be on the way to success since I already have the junk". (Me)
“To invent, you need a good imagination and a big pile of junk.” (T. Edison)
"I must be on the way to success since I already have the junk". (Me)
-
dacflyer
- Posts: 4748
- Joined: Fri Feb 08, 2002 1:01 am
- Location: USA / North Carolina / Fayetteville
- Contact:
Re: BLDC experiment
you oughtta get one of these, light weight and power out the A**
only uses a regular DC motor controller.
http://www.ebay.com/itm/Manta-II-10-hp ... 4d2282d625
.
only uses a regular DC motor controller.
http://www.ebay.com/itm/Manta-II-10-hp ... 4d2282d625
.
- seen on Ebay
Who is online
Users browsing this forum: Ahrefs [Bot] and 49 guests