The invention provides a control device and method for a solar module installed on a tower barrel. The solar module can be automatically unfolded and received, simple in structure, simple to install,and has various unfolded methods. Wind turbines generator system based on such an expanded solar module, on which one or more of the above described expansion solar modules are installed. The solar modules and the blades are simultaneously installed on the power tower, and the solar modules are automatic controlled expansion and storage by automatically monitoring and predicting the wind speed. Overcoming the shortage of solar energy resources, it is necessary to reoccupy a large area to install solar panels, resulting in high installation cost defects. Not only greatly reducing installation costs, but also easy to install, simple and convenient to install, and to increase energy availability by set the solar panels on the wind turbines generator system.