Influence of different structural forms on the lightweight of wind turbine tower

SONG Gong-jie1,2, QIU Hui-jie1,2, HE Xian-zhao1,2, XU Bin1,2, WANG Ke-feng1,2, TANG Yong-jiang1,2
(1.Zhejiang Windey Co., Ltd., Hangzhou 310000, China; 2.Key Laboratory of Wind Power
Technology of Zhejiang Province, Hangzhou 310000, China)

Abstract: Aiming at the urgent demand of global wind power market for project investment cost control, especially for tower investment cost control, contrast calculation of the natural frequency, loading state, strength performance, buckling stability and fatigue damage of different tower models were made. The influence of different structure forms on the lightweight design of wind turbine tower was summarized. Based on the relevant calculation theories of tower design principles, a number of tower models with different structure forms were built, and BLADED simulation software and engineering algorithm were used to solve the load calculation and compare the results under the same control strategy and wind conditions. The results indicate that based on allowance of the size design of the tower structure, the larger the diameter at the bottom of the tower or the more the number of straight sections near the bottom of the tower, the more beneficial to the improvement of the stiffness, the anti-limit performance and the anti-fatigue performance of the tower, and the more beneficial to the lightweight design of the tower.
Key words: structures forms; wind turbine; tower lightweight; contrast calculation