DSgen-set® – Drive Technology of the Future

The DSgen-set® is an electro-mechanical differential system specially designed for the wind industry. With up to 97% overall efficiency, the DSgen-set® is currently the most efficient drive train technology for wind energy converters and pioneering in terms of grid Quality.

WHY DSgen-set®?

Wind energy converters (WECs) are rapidly becoming more important as electricity generation systems. This gives rise to new standards regarding power quality on the one hand and a trend towards even larger WECs on the other. Given the growing costs of infrastructure, service, and maintenance of the WECs as they steadily increase in size, both the efficiency and availability of the systems are gaining significance here. This and the medium-voltage power electrics required because of the system size favor the use of separately excited medium-voltage synchronous generators directly connected to the grid. To compensate for the disadvantage of fixed speed in grid connected synchronous generators, there is the option of using differential systems – the DSgen-set®.


 Technical Data:

  • Highest total efficiency (up to 97%)
  • Low initial costs
  • Reduction of volume (pace?) and weight
  • Service-friendly design
  • Low voltage frequency converter

= lowest Live Cycle Cost (LCC)


+   LVRT compatible

+   Active drive train damping

+   Applications up to 10 mw


How does it actually work?

This drive technology consists of a differential gear (1), a three-phase motor with a low-voltage frequency converter as the differential drive (2+3), a separately excited synchronous generator (4), a main gear (6), and an electro-magnetic eddy current brake (5). The synchronous generator (4) directly connected to the power supply is driven by the differential’s ring gear at constant speed. The planet carrier is connected to the variable-speed main gear (6) by means of an input shaft. The differential’s sun gear is connected to the differential drive (2+3) by means of a drive shaft through the generator. The speed of the differential drive is controlled firstly in order to ensure the speed of the synchronous generator is constant when the speed of the rotor is variable, and secondly to control the torque in the entire drive train. In the event of a temporary power failure (LVRT), the specially developed electro-magnetic eddy current brake (5) is used, which controls the torque in the drive train in milliseconds and significantly reduces loads on the entire WEC.

Set-up drive train


Principle of the differential gear (1)