[Vwdiesel] Fw: Power Generation --- ( electrical )

[Shirley, Mark R]

Rather than replacing all your appliances with DC appliances, it would
likely make a lot more sense to just install a big inverter on your
battery bank, so that when you have to replace a DC appliance, you don't
have to wait 3 weeks for one to be mailed to you... 

> -----Original Message-----
> From: gary [mailto:gbangs at cfl.rr.com]
> Sent: Wednesday, April 14, 2004 9:03 PM
> To: VWDiesel
> Subject: Re: [Vwdiesel] Fw: Power Generation --- ( electrical )
> 
> 
> Hmmm,
> 
> Are we talking about a lightly loaded windmill with a strong breeze?
> 
> Windmills attempt to maintain 60hz (well, here in the US) by either
> changing the generator field strength, and/or blade angle. The smaller
> gensets will only adjust the field, the monstrous ones will do both.
> 
> Your 63hz windmill doesn't have enough load to maintain frequency.
> But that doesn't mean that it cannot be connected though.
> 
> Synchronize it with and connect to the grid. Boom! Rock steady 60 hz.
> Why, because the generating capacity of the grid dictates the 
> frequency.
> Your puny (no disrespect intended) windmill does not have 
> enough umph to
> change system frequency.
> 
> Your genset controller, either manually or automatically, will attempt
> to adjust its voltage and frequency. Ideally, as a small 
> generator, you
> want the 'set' voltage slightly higher than grid voltage. 
> Reason is that
> as a generator, you want amps to flow out, not in. This also reduces
> "recirculating" current... VA power which does nothing, compared to
> Watts, real power.
> 
> What really makes your windmill make power is the freq setting. By
> setting the 'set' freq higher than grid, though freq will 
> stay steady at
> 60hz, the phase angle of your generated power will lead the grid phase
> angle. This makes power flow out. On the other hand, you can make your
> windmill a big "fan" by setting the set freq lower than grid.
> 
> Note, when doing all of this, you need to know the Kw and amp 
> limits of
> your machine and adjust your settings accordingly.
> 
> You can run your house on DC! Of course! Why not?
> 
> You would of course need to replace ALL of your appliances with a DC
> powered equivalent. Replace ALL of your outlets with the 
> appropriate DC
> version. In this day and age, I would suspect that it would be cost
> prohibitive to do.  
> 
> -Gary
> 
> 
> 
> On Wed, 2004-04-14 at 10:44, Val Christian wrote:
> > Gary,
> > 
> > So what happens if you generate power at 63 Hz, so that it can't
> > be put on the grid.  How's about running your house on DC?
> 
> 
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