The research and development of the 3MW doubly-fed offshore wind turbine generator system (WTGS) is one of the sub-grant projects on the Wind Turbine Technology Transfer. The project researched and developed the 3MW doubly-fed offshore WTGS,carried out the factory, field experiments and completed on-site installation,commissioning and operation.The multi-MW offshore WTGS has achieved industrialization,passed the international certification,and has been applied in China's first offshore wind power project, namely, the Shanghai Donghai Bridge 100MW Offshore Demonstration Wind Farm Project.

The project implementation completed the detailed design of 2.5MW WTGS; parts trial and the whole assembly, and the factory tests of generator and deflector; and finally it completed the installation, commissioning and trial operation of the first prototype at Goldwind's testing wind farm in Beijing. The MW-level WTGS development objective of domestic brands has been achieved, and at the same time, the WTGS international standard certificaton and on-site tesing has been completed. In 2010, the Goldwind 2.5MW WTGS begun to be put into market gradually, which strengthens the WTGS competitiveness of Chinese brands in the wind power market.

Through the project, Shanghai Electric Wind Power Equipment Co., Ltd. introducted the German Aerodyn 2MW wind turbine technology to manufacture a 2MW prototype installed at Dafeng wind farm in Jiangsu and intergrated to grid on April 18, 2009. The wind turbine meets the design requirements and passes the "type approval". On the basis of digesting and absorpting the 2MW wind turbine imported technology, Shanghai Electric has developed its own types of the intertidal wind turbine, low temperature wind turbine and offshore wind turbine, which were installed at the Jiangsu Rudong Wind Farm, Jilin Siping Wind Farm and Jiangsu Xiangshui Wind Farm.

With the technical strength of developing the wind turbines possessed by this enterprise, under the technical support of the nationally famous wind power technology consulting firm GH, the product development of 1.5MW doubly-fed variable-speed constant-frequency wind turbine with the independent intellectual property has been completed and achieved mass production. The wind turbines have passed the design approval from German TÜV and the type approval from China General Certification Center in Beijing, and the performance indicators of the whole machines have reached the advanced level of the international similar products. The implementation of the project makes the enterprise possess the independent design and development abilities of MW-level WTGS, futher strengths the technology advantages of MW-level WTGS, and improves the cost-effective, through the development and implementation of the advanced independent pitch control technology, to make it achieve a favorable position in the competition with similar products.

Dongfang Turbine Co., Ltd. and Austria AMSC Windtec company establish the partnership for the design and development of 2.5MW wind turbines jointlly, and all the intellectual property rights is owned by Dongfang Turbine Co., Ltd. The WTGS uses double-fed asynchronous generator, in coperation with speeding up gear box, deliverying the power of high quality to the grid through the transformer.To adapt to the environment in China, the normal temperature and low temperature units were designed respectively. And to adapt to different wind zones, the units adapted toⅡ and Ⅲ wind zones were designed respectively. Currently, the prototypes have been developed and are being installated and preparing for commissioning at Zhangbei Testing Wind Farm in Hebei.

The project began in November 2008. the projects carried out the works, such as the Rudong 1GW intertidal wind farm development planning, the wind resource assessment of Rudong 150MW intertidal wind power project, the construction technology research and the specialized amphibious equipments development of the intertidal wind farm wind turbines transportation and installation, and so on. In December 2009, the project was completed successfully, and provided the strong technical support for the intertidal wind farm construction in our country indeed. In 2010, the Rudong 150MW intertidal wind farm relied by the project was integrated to grid smoothly