Key words: Polyurethane, Fatigue test
Abstract: On July 24, 2020, the world’s first 2.3MW-64m polyurethane based wind turbine blade successfully passed fatigue test.
On July 24, 2020, the world’s first 2.3MW-64m polyurethane based wind turbine blade successfully passed fatigue test including edgewise and flapwise tests. CGC issued the blade certification to this blade which marks the comprehensive application of polyurethane infusion resin on large wind turbine blades. The cost reduction and efficiency increase brought by polyurethane resin can effectively cope with the coming wind power parity. It will promote the innovation and development of blade core materials in China.
This blade is jointly developed Goldwind, Covestro, LZ, Gurit and PGTEX. Different from the polyurethane blade which has been mass produced in China before, the shell, spar cap and spar web of this blade is all made of polyurethane infusion resin system. Several innovative designs have been carried out on the blade structure, and new core materials are used. Moreover, it has solved a number of process problems and realized the breakthrough of polyurethane resin in the design and manufacture of large turbine blades.
It is planned to install the first set of this blade for trail on the selected wind farm and the small batch will be produced then.
Translated and edited by: minds:connected