Although I am pleased with this, I am having problems with the mains voltage flutuations.
Today for instants, we have had steady winds of 30 to 40 mph (I have a Davis weather station at a height of 5m - so the turbine is experiencing 40+mph). With these high winds the mains voltage flutuates - the lights in the house flicker. This is enough for the SMA Windy Boy to cut out (0.2 seconds) The turbine which when under load stays at about 500v dc - varying the ampage to control the output to 6kW. Once offloaded the voltage climbs straight to over 600v! The Windy Boy senses this as an overvoltage and will not allow the turbine to re-connect to the grid. It requires a time of 3 minutes of below 600v before allowing re-connection: hence today it has been offline for most of the day - wasting all this wind!
Dividing the 8mWh by the operating hours, it is achieving approx' 2.2kWh for every hour of operation; this would equate to over 19mWh/year...