>> Another project I was
>> thinking about, is seeing if my motorcycle permanent magnet
>> alternator
>> would work as a three-phase motor. It is configured just like an
>> out-runner, but this doesn't have a controllable field. Getting rid
>> of
>> delicate magnets is appealing.
>
> Perhaps in
On 11/12/2010 12:10 PM, Peter C. Wallace wrote:
>
> All this three phase stuff makes me wonder if a car alternator (with diodes
> removed) would make a fair AC servo motor (you would have to supply the field)
> I guess one disadvantage is that they would have fairly high inertia
>
>
It has been
On 12 November 2010 19:39, Kirk Wallace wrote:
> Ouch. Indications are, this is your bike. How did the story end?
So far so good.
I decided that all the bits of magnetic grit were either in the oil,
in the oil filter, in the bottom of the sump or stuck somewhere out of
the way. I dropped the su
On Fri, 2010-11-12 at 19:02 +, Andy Pugh wrote:
... snip
> Perhaps in the original application too?
> http://www.bodgesoc.org/OhDear.jpg
Ouch. Indications are, this is your bike. How did the story end?
--
Kirk Wallace
http://www.wallacecompany.com/machine_shop/
http://www.wallacecompany.com
On 12 November 2010 18:46, Kirk Wallace wrote:
> Another project I was
> thinking about, is seeing if my motorcycle permanent magnet alternator
> would work as a three-phase motor. It is configured just like an
> out-runner, but this doesn't have a controllable field. Getting rid of
> delicate m
On Fri, 2010-11-12 at 10:10 -0800, Peter C. Wallace wrote:
... snip
> All this three phase stuff makes me wonder if a car alternator (with diodes
> removed) would make a fair AC servo motor (you would have to supply the field)
> I guess one disadvantage is that they would have fairly high inertia
On Fri, 2010-11-12 at 17:34 +, Andy Pugh wrote:
> On 12 November 2010 17:12, Mario. wrote:
>
> > And as for "flat-topped sine wave, are you sure it is NOT a space
> vector wave? When I did SVPWM on PIC18F452 some 6 years ago, it made a
> lovely sine wave measured from phase to phase,
>
> Sur
On Fri, 12 Nov 2010, Andy Pugh wrote:
> Date: Fri, 12 Nov 2010 17:34:50 +
> From: Andy Pugh
> Reply-To: EMC developers
> To: EMC developers
> Subject: Re: [Emc-developers] BLDC Driver
>
> On 12 November 2010 17:12, Mario. wrote:
>
>> And as for "flat-t
On 12 November 2010 17:12, Mario. wrote:
> And as for "flat-topped sine wave, are you sure it is NOT a space vector
> wave? When I did SVPWM on PIC18F452 some 6 years ago, it made a lovely sine
> wave measured from phase to phase,
Surely what you are describing there is more related to the drive
0, Brian wrote:
>
> > Date: Wed, 10 Nov 2010 00:00:29 -0500
> > From: Brian
> > Reply-To: EMC developers
> > To: EMC developers
> > Subject: Re: [Emc-developers] BLDC Driver
> >
> > BLDC and AC servos are not the same. The difference is subtle, and
>
On Wed, 10 Nov 2010, Brian wrote:
> Date: Wed, 10 Nov 2010 00:00:29 -0500
> From: Brian
> Reply-To: EMC developers
> To: EMC developers
> Subject: Re: [Emc-developers] BLDC Driver
>
> BLDC and AC servos are not the same. The difference is subtle, and
> they could
BLDC and AC servos are not the same. The difference is subtle, and
they could be interchanged for one another, but would not result in
optimal operation. the difference is the shape of the back EMF
voltage they generate. The AC motor will tend to generate a more sine
like EMF, and the DC motor w
On 9 November 2010 17:25, Brian wrote:
>
> If you use PWM, doesn't that make it an AC motor?
It's fuzzy. BLDC motors are also known as AC servo motors.
To further muddy the waters, one potential use of the generalised BLDC
component would be old-school VFD or new-fangled flux-vector drive of
indu
If you use PWM, doesn't that make it an AC motor? I suppose unless
you are just modulating half of the polarity, then you could still
consider it DC. I am not immediately familiar with the bldc
components, so if this is just my ignorance speaking, then ignore it.
Brian
On Tue, Nov 9, 2010 at 7:
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