Now we have fixed pitch wind turbine, pitch controlled wind turbine, vertical axis wind turbine.

1. Pitch controlled wind turbine is more safety and reliable at high wind speed condition;

2. Vertical axis wind turbine select stallout blades, when the rotation speed reach to 200rpm, the rotation speed will not increase even wind speed still increase.

Above wind turbin is safety, but the cost is higher.

3. Fixed pitch wind turbine + speed limited controller

If the user select fixed pitch wind turbine, we recommend user select speed limited controller. This way the wind turbine, controller cost is lower. But the whole system is safety at high wind speed condition.

So if the user can provide installation site average wind speed to us is more better, if can not provide it, we will provide the speed limited controller directly.

The more communication, the less problem after installation.

Aron