I'm playing with trying to run a 3P induction motor with bldc.comp. I
set cfg=n which seems to just output three sine float values. I'm
assuming that I could run these into three pwm comps then out to a set
of half bridges, or is there an option that tells bldc to output the pwm
directly?
--
On 26 November 2014 at 16:38, Kirk Wallace kwall...@wallacecompany.com wrote:
is there an option that tells bldc to output the pwm
directly?
No.
I did consider adding a base-thread function that did phase-locked PWM
but decided that the frequency would tend to be impractically low.
The Mesa
On 11/26/2014 08:51 AM, andy pugh wrote:
On 26 November 2014 at 16:38, Kirk Wallace kwall...@wallacecompany.com
wrote:
is there an option that tells bldc to output the pwm
directly?
No.
I did consider adding a base-thread function that did phase-locked PWM
but decided that the
On 17 January 2011 05:20, Kirk Wallace kwall...@wallacecompany.com wrote:
I'm a little confused about the bldc comps. My study of bldc so far
indicates that the top and bottom of three half-bridges need to to be
controlled, so I though the comps would need six outputs instead of the
three (3
On Sun, Jan 16, 2011 at 09:35:53PM -0800, Kirk Wallace wrote:
On Sun, 2011-01-16 at 21:20 -0800, Kirk Wallace wrote:
I'm a little confused about the bldc comps. My study of bldc so far
indicates that the top and bottom of three half-bridges need to to be
controlled, so I though the comps
Kirk Wallace wrote:
I'm a little confused about the bldc comps. My study of bldc so far
indicates that the top and bottom of three half-bridges need to to be
controlled, so I though the comps would need six outputs instead of the
three (3 digital top, 3 PWM bottom). What am I missing?
Erik Christiansen wrote:
But with a little dead-time between one being turned off and the other
on. So H-bridge drivers with hardware dead-time would be needed where
only three signals are provided. (AIUI)
You can't drive a 3-phase motor with only high and low drive in six step
mode.
It
I'm a little confused about the bldc comps. My study of bldc so far
indicates that the top and bottom of three half-bridges need to to be
controlled, so I though the comps would need six outputs instead of the
three (3 digital top, 3 PWM bottom). What am I missing?
--
Kirk Wallace
On Sun, 2011-01-16 at 21:20 -0800, Kirk Wallace wrote:
I'm a little confused about the bldc comps. My study of bldc so far
indicates that the top and bottom of three half-bridges need to to be
controlled, so I though the comps would need six outputs instead of the
three (3 digital top, 3 PWM
