OutBack HBX mode [RE-wrenches]

[Darryl Thayer]

Thanks I am getting closer.  but still a little
puzzeled. If I had two additional parts?

It seems to me that if I had a battery charger that
worked like the MX60 that I could take line power and
produce a stable float charge on the battery.  AS the
inverter needed more power the line would provide the
extra power and the batteries would still float.   

A smart controller that could sense the amount of AE
that was available such as Randy Richmond's 
“righthandeng at hotmail.com” 
computer based systems. Which would sense a critical
source component such as load corrected voltage on PV
then switch to tell the inverter to turn on AC
transfer the load.     

such when the alternative energy system (AE) has
available enough power to overcome the excess losses
of the inverter-charger system, about 10% of load, I
should have the Outback’s automatic AC transfer relay
transfer the load from the grid to the Outback which
would get its power from the AE and the grid through
the battery charger.  (the grid participates using the
smart battery charger to float the battery pack.)  

When the AE drops below the 10% of load it is cheaper
to have the Automatic AC transfer switch transfer back
to grid.  If the AE exceeds the load, the excess is
wasted. So for houses with a large loads compared to
the AE the system is almost there. 

Do I have the correct idea?
Daryl 

--- Christopher Freitas  -  OutBack Power
<cfreitas at outbackpower.com> wrote:
> Darryl Thayer wrote:
> > I like this idea, but I am a little slow, so
> please
> > make sure I understand. 
> > 1) The Outback powers a subpanel.  
> > 2) The batteries power the Outbacks. 
> > 3) The wind machine powers the batteries.  
> > 4) The grid also powers the batteries by using the
> > Outback charger capability.  
> 
> The utility grid does not have to be used to
> recharge the battery with 
> the OutBack inverters - the charger can be turned
> off separately from 
> the inverter and the AC transfer switch (I usually
> advise not using it). 
>  When the battery gets low, the inverter will
> automatically transfer the 
> AC loads to the utility and then let the PV and/or
> wind recharge the 
> battery. Once it is recharged the system then
> automatically goes 
> "off-grid".  This is what we call the "HBX" mode -
> it is similar to the 
> SW's LBX mode except our charger can be turned off
> and you have better 
> control of when it transfer to/from the utility grid
> (adjustable dc 
> volts & time delay - verses - just dc volts w/fixed
> short time delay).  
>  
> > Do the electrical inspectors have trouble with
> this? 
> 
> Not that I have ever seen.  They usually want some
> kind of marking by 
> the KWH meter to indicate that a back-up power
> system has been 
> installed.
>  
> > As long as most of the power is from alternatives
> it
> > seems to be a good idea. If the alternative
> sources
> > are small the battery efficiency will eat up the
> > savings.  
> 
> True - although if the loads being powered where
> small and the battery 
> was small, then its not any worse - it all goes in
> proportion to the 
> size of the system and loads.  
> 
> We also allow manual control of the system in
> addition to the automatic 
> operation - so if the homeowner is concerned that
> the system be fully 
> charged before a storm for instance they can simply
> hit a couple of 
> dedicated "HOT" keys on the MATE display and it will
> connect to the grid 
> and recharge the batteries.  This manual
> intervention does not disable 
> the automatic operation either so the system keeps
> operating as 
> originally once the battery is full. The opposite
> also can be done - 
> such as forcing the system to drop the grid even
> though the battery is 
> not yet fully recharged - and is great for demos to
> impress the 
> neighbors.  
> 
> Christopher Freitas
> OutBack Power Systems, Inc.
> cfreitas at outbackpower.com  www.outbackpower.com
> Tel 360 435 6030  Arlington WA USA
> 


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