RE: [TCML] Re: Coils at Maker Faire

[Nick Andrews <nicothefabulous@xxxxxxxxxxx>]

Regenerative braking?

Nick A





> Date: Wed, 3 Jun 2009 12:39:22 -0800
> From: lod@xxxxxxxxxxx
> To: tesla@xxxxxxxxxx
> CC: 
> Subject: [TCML] Re: Coils at Maker Faire
> 
> During a drive-by, the AC mains power and the tuning stay the same. 
> What changes is the decrement of the secondary waveform.  Normally the 
> decrement is a relatively smooth exponential decay.
> 
> When the roadster vehicle is within range and drawing power, the 
> decrement becomes sharper and gains a distinctive beat note.  The beat 
> note can become quite pronounced, even to the point where the decrement 
> becomes non-monotonic... indicating that the vehicle can return energy 
> to the coils as well as steal energy.   GL
> 
> 
> Dr.Hankenstein wrote:
> 
> 
> 
> > Greg,
> > 
> > During a "drive by" I would venture to guess that you see some de-tuning
> > and shifts in power consumption, etc. on your metering as the Roadster
> > distorts the "normal" field between the coils? Have you noticed that as
> > you turn up the power, the actual amount of de-tuning, etc. actually
> > reduces as a percentage of input vs. output? I think my little mind
> > would go into hyper-enjoyment watching these changes occur. Thanks
> > again,
> > 
> > Hank 
> > 
> > -----Original Message-----
> > From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> > Behalf Of Greg Leyh
> > Sent: Tuesday, June 02, 2009 5:21 PM
> > To: tesla@xxxxxxxxxx
> > Subject: [TCML] Re: Coils at Maker Faire
> > 
> > Hi Hank,
> > 
> > The roadster usually 'robs' less than 1/2 horsepower.  The arcs affect 
> > the machines much more strongly than the machines affect the arcs. 
> > Still, from the diagnostics it's possible to tell that the Roadster is 
> > nearby, when the coils are operating.   GL
> 
> 
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