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풍력발전기용 Yaw Gearbox의 가속 수명시험에 관한 연구
이용범(Yong-Bum Lee),이기천(G. C. Lee),이종직(J. J. Lee),임신열(S. Y. Lim),김우진(W. J. Kim),김광민(K. M. Kim) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11
The yaw gear box of a wind power generator is a key device that rotates several hundred tons (200 to 600 tons) of nacelle so that the blade is 90 degrees in the direction of wind to improve power generation efficiency. Recently, in order to increase the economic efficiency of wind power generators and utilize excellent wind resources, the installation site is expanding from land to sea as it has become super-large to 8-12MW. The target life of large wind power generators requires more than 25 to 30 years. The yaw gearbox is installed in 6 to 12 parallels in very complex places above the tower and below the nacelle, and if a failure occurs after installation, it is important to ensure reliability of the yaw gearbox because it costs tens to hundreds of times the price of a new product as well as economic damage. In order to secure the reliability of the gear box, the equivalent load was calculated by analyzing the failure mode analysis and the Filed data, and the accelerated life test condition was established, and the test device was constructed to analyze the performance degradation.