Generator concepts can be divided into three categories:
Fixed speed generators
The traditional stall concept with the generator coupled to the grid.
Doubly fed, semi-variable speed generators
Mainstream pitch concept with the rotor connected to the grid using a small converter.
Full variable speed generator
The full power converter between the generator and the grid enables the full speed range.
ABB’s standard spare parts service guarantees rapid delivery to users of wind turbine generators. There is a possibility to order standard spare parts via Parts On Line. If you are interested in Parts On Line system you are welcome to visit our Internet site: http://www02.abb.com/partsonline.