Battery-less wind turbines? [RE-wrenches]

[jay peltz]

Hi Rob,

Thanks for the info.

My understanding is that the MPPT is either all on or all off.  There is
no way to have both MPPT for PV and a non MPPT input ( connection at the
inverter) going on at the same time?

You think the MPPT might work for the hydro, any way you guys could test
this?  It would be nice to know for sure.

Thanks,

jay

peltz power


Rob Wills wrote:

>  Hi Jay - as long as the hydro turbine will not put out more than 120V
> open circuit (no-load turbine speed will be limited by the nozzle
> velocity I guess), we can run the dc-dc front end of the MM-5000 in
> constant voltage  mode - it would also probably work in MPPT mode -
> worth a try.  In constant voltage mode, what I would do is try a range
> of voltages (by changing the input voltage target setpoint) until max
> power output is reached.  MPPT is turned on and off by
> setting/clearing a bit in the option word (setpoint 0x7f).  Please
> give me a call if you would like to discuss this application
> further.Regarding replacements for the GC-1000, we have plans for a
> significant upgrade later in the year (lcd display etc), but our next
> offering will be a very innovative 3kW grid-tie inverter.  We are
> still a few months away from commercial on this, so I'll hold back on
> the details..RegardsRob Wills

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