Abstract: The research and development of pultruded plates for wind power blades at home and abroad are introduced in this paper. Five types of pultruded plates of different material systems are involved, which are carbon fiber pultruded plates, glass fiber pultruded plates, carbon fiber-glass fiber hybrid pultruded plates, pultruded plates without peel ply and polyurethane pultruded plates. The application advantages and challenges of pultruded plates compared with traditional vacuum filling and prepreg composites are analyzed. Combined with the current application status, the future focus direction and development trend of pultruded plates of various material systems are put forward respectively: Glass fiber pultruded plates will still occupy the mainstream in the future onshore wind power blades because of its low cost advantages, and will develop in the direction of higher modulus and lower cost; with the development of offshore wind power and the acceleration of the process of carbon wire localization, carbon fiber pultruded plates will have a broader application prospect; carbon fiber-glass fiber hybrid pultruded plates, pultruded plates without peel ply and polyurethane pultruded plates have obvious advantages in weight reduction or cost reduction, but further research and application experiences need to be carried out.

Key words: wind turbine blade, pultruded main beam, glass fiber pultruded plate, carbon fiber pultruded plate, application, composites