While more modern turbines are increasingly using direct-drive systems that eliminate the need for a gearbox and the maintenance associated with them, in the early 2000s an American wind turbine ...

Some of the largest wind turbines in the world like the Siemens Gamesa direct-drive turbines are examples of turbines with no gearboxes, which are generally (but not always) found in type 4 ...

The commercial application of these technologies is investigated via case studies on the permanent magnet direct drive generator in the Zephyros wind turbine, and the Archimedes Wave Swing (AWS) ...