In 1996, aerodyn founder Soenke Siegfriedsen came up with the idea of Multibrid technology. The basis for it was a drive train with a one-stage planetary gear box and a slowly rotating generator, the rotor bearing arrangement within the 1st gear stage as well as the integration of the gear box, the generator and the yaw system in a single housing. That is to say, a design concept that operates without any fast-moving components and protects all sensitive parts within a single housing. The result is reduced wear and a high level of reliability; without doubt a groundbreaking innovation, for which the father of this hybrid solution, Soenke Siegfriedsen, obtained multiple patents and the basic concept of which has since been adapted by many companies. Soenke Siegfriedsen has thus far registered 39 patent families, from which 152 nationalised patents have been granted. In 1999, aerodyn received for this design of the Multibrid technology the IF Award of the Hanover trade fair.
The SCD Technology is a further development of this innovation. The first patent was applied for in 2007. 16 further patents followed in subsequent years. In 2009, the technology received the renowned HUSUM WindEnergy Technology Award at HUSUM WindEnergy, the leading international trade fair for the wind energy sector. The jury’s opinion states that the overall design stands for the aim to ‘increase the cost-effectiveness of wind turbines, reduce manufacturing, maintenance and repair costs and further improve energy output and reliability.’ The underlying idea for the groundbreaking innovation is that the rotor bearing, gear box and generator are arranged linearly with nearly identical diameters and the housings of the components are used for load transfer from the rotor to the tower top.
In the SCD, the first of the two gear stages is integrated directly into the main bearing of the rotor. This saves space. In case of the SCD Technology, the extremely compact and small drive train leads to an optimal load transfer and, in consideration of all costs incurred, to particularly cost-effective power generation.