Sunday, July 21, 2019

Now for some stats old vs new wind turbine

I'm happy to report the SouthWest wind turbine is running great.


It doesn't make nearly has much power as the Redriven when it is windy, but the south west spins in lower wind speeds and it doesn't use any power to find the wind.  The Redriven in the summer,  used more power looking for wind than it made. The yaw motor would rotate back and forth looking for the perfect direction, which it seems in the summer is a fools errand except in storms.

The the dedicated meter says 57 kWh since January ( but we were down part of Jan, Feb and March the best months)

the Aurora inverters say we have made 60 kwh since Jan 1.  I believe the discrepancy is that we had our water pump plugged into the wind turbine outlet for a while. This makes the meter move in the opposite direction.   I asked my husband to move it so we would have an accurate measurement.

The peak power made with the South West was 1426 watts.  ( unfortunately just a spike durning a storm that doesn't happen often but not bad for a 1K turbine)

It is not true that the South west doesn't use any power. There is a very small voltage needed to keep the relay closed, this is to monitor when the grid goes down it opens the relay to shunt the turbine so no stray wind voltage is sent back to the grid.

We have been connected to the grid for 9 years this month.

The Aurora inverter is showing a life time reading of  4067 KWH.  With the Redriven we used to run two inverters.  So the total lifetime power the 10K Redriven would be ~ 8000 kwhs.


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