Adding wind turbine to PV array

Just found this forum we're completely off grid and running on solar power, it's a 48v system which is great during the summer (we're in southern Spain), but not so great in the winter as there's little sun and a LOT of wind. I was thinking about adding a wind turbine to the system, as the prices are so low now. We have a hybrid MPPT inverter charger but from what I've read on this forum so far, I need a separate charge controller connected to the battery bank for the turbine? If so, would pwm be OK next to a mppt? In our climate the sun and wind are quite separate so they shouldn't clash much. To give a bit more info, we typically get around 800w from the solar array and the turbine I'm looking at is also 800w max power. Thanks in advance
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I don't believe we have a strong person on wind who regularly participates currently.
If you search our past threads we had a guy named Chris Olsen(?) who was very strong on wind and you might find some good advice.
In general small wind is difficult, it requires more maintenance and also requires a dump load, usually a heater of some sort water or air since while spinning they will produce power that needs to go somewhere. Unlike solar which can just be turned off. If you are in a windy area it can work nicely.
- Assorted other systems, pieces and to many panels in the closet to not do more projects.
http://www.solarelectricityhandbook.com/solar-irradiance.html
Valencia
Measured in kWh/m2/day onto a solar panel set at a 50° angle:Average Solar Insolation figures
(For best year-round performance)
3.38
Marbella
Measured in kWh/m2/day onto a solar panel set at a 54° angle:Average Solar Insolation figures
(For best year-round performance)
If you were to add 800-1,600 Watts of solar panels--How would that compare to the cost for adding wind power (typically, the tower and support hardware costs way more than the turbine itself--Add the need to service that turbine every 1 year or so--rent truck, or setup a tilt tower). Towers should be (typically) >=10 meter tall (33 feet) and above nearby trees/homes (30 meter towers are closer to ideal--But hard to justify costs).
If you are not a do it yourself type person (winch, tractor, boom truck), the support issues/costs are not trivial.
Has anyone installed a wind system near you? Can you get their monthly energy production numbers for 1+ year period? Most small turbine installations produce very little energy over time, and seem to fail/fall into disuse after a year to two.
I am not a big fan of wind...
-Bill
The same with roofs for solar offgrid.
Not a Fan as you say Bill.
http://members.sti.net/offgridsolar/
E-mail [email protected]
http://forum.solar-electric.com/discussion/3638/small-windpower-a-scam-survey-says-so/p1
If you want more links, look at this post here (from our FAQ like page):
http://forum.solar-electric.com/discussion/comment/77299#Comment_77299
Links to both positive and negative information about wind...
-Bill
Note no original link available... Had to recover from copy on forum. These are kWH per month numbers:
* December, 2007 - Skystream shut down from software problem with cold and would not restart.
* January, 2008 - Skystream down until the 27th. Produce 98kWh in the 5 days remaining in the month.
* December, 2009 - Skystream shut down several times and would not restart on it's own, production very low for wind speeds.
Skystreams seem to miss the "reliability" target... But when they worked, they did harvest pretty well.
This is about the only "Long Term" data I have ever found for a small wind turbine installation... I just do not ever see/find any other data from any other source that even near 1-2+ years in length.
-Bill