[ausev] DIY controller?

[Erik]

There's certainly nothing wrong, but given that a number of failure modes of
a PWM'd DC motor controller are full on tires screeching through a red light
there is an element of danger. Nothing that couldn't be designed out of
course.

As I understand, fundamentally they really are quite simple but as the old
quote goes - In theory, theory and practice are the same thing, in reality
they are different. High currents and the induced electromagnetic fields can
cause strange things to happen that may be difficult to troubleshoot and so
on, but it's definitely been done before. I remember running across one in
my early EV research, it certainly looked cool.

Erik
On Fri, Jun 13, 2008 at 5:17 PM, Brian Lasseter <
blasseter.cmpe01 at gtalumni.org> wrote:

> On Fri, Jun 13, 2008 at 1:41 AM,  <evehicle4me at hischopsticks.org> wrote:
> > Has anyone run across diy plans for a controller?  either from scratch
> > or for hacking up something?  With ecars it seems that you spend money
> > in multiples of $1,500.  It would be nice if there was some way to
> > shrink the cost of parts.
>
> http://www.cafeelectric.com/curtis/curtis.php
>
> Otmar has some Curtis controller schematics online... but
> realistically, with something as important as the controller, I prefer
> to buy one.
>
> You could just put a 100kw rated rheostat in the car to control the
> motor too.  :-)
>
>
> --
> TTFN,
> Brian "Lasso" Lasseter
>
>  · (512)736-1677 · AIM:digininja · ICQ:2238123 · MSN:azoreg ·
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>
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