Hi I am constructing a PMG VAWT(Vertical Axis Wind Turbine) and I need help with the circuitry to control it. It is a 3 phase PMG. I am testing the VAWT this summer to determine RPM's/Minute/MPH wind. After that I will design the coils. But I need help with the following.
1.How do I calculate the RPM's in a "loaded" PMG based on the RPM's in an "unloaded" PMG. Put in another way. The coil design will be based on the RPM, and Gauss force field from the magnets, But I am guessing the RPM for a given windspeed will be lower once the PMG is connected........and thus the coil calculation is no longer valid.
2.Can anybody guide me to a diagram that takes the following in to account.
-Cut in speed
-Overspeed protection
-Stopping the VAWT....electronic brake
-Cut out speed
-Rectifying
The whole thing will charge 12V batteries, so I need an output of about 13.4VDC.
I know this is a tall order, so thank you in advance.
1.How do I calculate the RPM's in a "loaded" PMG based on the RPM's in an "unloaded" PMG. Put in another way. The coil design will be based on the RPM, and Gauss force field from the magnets, But I am guessing the RPM for a given windspeed will be lower once the PMG is connected........and thus the coil calculation is no longer valid.
2.Can anybody guide me to a diagram that takes the following in to account.
-Cut in speed
-Overspeed protection
-Stopping the VAWT....electronic brake
-Cut out speed
-Rectifying
The whole thing will charge 12V batteries, so I need an output of about 13.4VDC.
I know this is a tall order, so thank you in advance.