John
That is amazing to me man....i mean I have seen some monster electric
motors before but 3k HP is nutz ...... I know the motors they used on the
draw bridges in South Florida where I used to live were big DC I believe
and they lifted some amazing loads via counterbalance and gearing. Lots
of industrial application for motors like this. I also find it
interesting that there is so much resistance to electric vehicles in the
world when so many of the largest and most powerful vehicles are moved with
electric power. It is an awesome force and must be interesting to work in
that field. Peace
Pete
On Tuesday, April 30, 2013, John Kasunich <jmkasun...@fastmail.fm> wrote:
>
>
> On Tue, Apr 30, 2013, at 02:14 PM, Stephen Dubovsky wrote:
>> SCR dc drives? Is this the 70's?
>>
>> LOL. Im kidding. But only partially:)
>>
>> SMD
>
> For anything more than a few HP, SCRs still rule the DC drive world.
>
> I guess the toy stuff, under 1HP, is all PWM based these days.
> Small but not toys, say 1 to 5 HP, is probably a mix. But I bet there
> aren't many PWM DC drives above 5HP.
>
> My perspective is skewed somewhat, since the company I work
> for makes industrial DC drives, from about 20HP up. We don't
> mess with the tiny stuff. We recently shipped a 3000HP DC
> drive for use in a steel mill.
>
>
> --
> John Kasunich
> jmkasun...@fastmail.fm
>
>
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