Re: AC Drive Sources?

[Victor Tikhonov <vtikhono@lsil.com>]

EVers, few people have asked for the cost of Siemens AC systems,

I believe somewhere in archives it was mentioned, 
briefly here is is again:

(Disclaimer: this is not to promote the product, this is in response
to your questions and price requests)

Siemens AC motors:

18 kW rated = $1,995
30 kW rated = $3,295
45 kW rated = $3,995

Siemens 100 kW inverter + 60/90A DC-DC converter + main 
contactors + accel. pot + harness = #2,995

Regarding whether AC system will save you money in a long run compare
to DC setup - possibly. Depends on how you drive. The only difference
it makes - it forces you to use high voltage battery pack (At <200 VDC
pack voltage the drive performance will be really poor). So (for
for the same performance) currents are lower and (for fixed range) DOD
of your batteries is also lower. Both are good things for your batteries
guaranteeing that you never exceed 280A limit under hardest
accelerations,
so you *potentialy* can extend battery life comparing to trying to keep
up 
with lower voltage DC system drawing hundreds of amps routinely.

However, as all of you know, pushing limits will murder any battery with
any system.

Victor
MM

Teoman Naskali wrote:
> 
> So would it be cheaper to contruct an ac system? If so what would be the
> advantages and disadvantages?

Todd Hunter wrote:

>Victor,
>
>    so what are the cost for the different motors and controllers.  How much
>is an AC system going to cost compared to DC and what would be the
>advantages.  I see the controller has regen built in.
>
>Todd Hunter
>
>----- Original Message -----
>From: "Victor Tikhonov" <vtikhono@lsil.com>
>To: <ev@listproc.sjsu.edu>
>Sent: Friday, April 27, 2001 6:21 PM
>Subject: Re: AC Drive Sources?
>
> 
> >Yes,
> >
> >I believe, discussion was about Siemens AC drives I import from
> >Germany and Holland for sale in the USA. My web site describing
> >them is http://www.metricmind.com  Several people have bought
> >these and hopefully soon can report any results. Drives are indeed
> >very affordable and considering life time of the battery pack
> >on light duty (low currents) the cost of whole setup over time
> >is even less than that of comparable power DC setup.
> >
> >Tonight I am updating FAQ page on this subject, so tomorrow
> >there will be new info on it.
> >
> >Please, I'm open to any questions regarding these units and
> >future plans.
> >
> >Best regards,
> >Victor
> >Metric Mind Engineering
> >
> >p.s. If you go to MAEAA links page, "Metric Mind" is listed in
> >"EV parts suppliers" section, right under "KTA services"
> >
> >http://www.geocities.com/MotorCity/Downs/4214/links.html
> >
> >
> >Mason Convey wrote:
> > >
> > > I receall the list discussing one or two particular AC drives a while
> > > back - the benefit being its/their reasonable price. Ring a bell? I
> > > tried the archives, but could not find the posts. Can anyone remind me
> > > what drives were being discussed? It seems like it was no more than 6
> > > months ago.
> > >
> > > Thanks.
> > >
> > > opossum.
> > >
> > >      ..... mason s. convey .....
> > >
> > >      phone.             602.237.3771
> > >      pager.voicemail.   602.422.7996
> > >      email.             opossum@asu.edu (text)
> > >                         opossum@uswest.net (pictures.attachments)
> > >      AIM.               mtnbikeAZ (AOL)
> > >      website.           http://www.public.asu.edu/~opossum
> >
> 
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