Abstract
In this article, a wind turbine with power splitting transmission, which is realized through a three-shaft planetary gearbox, is presented. The input shaft of the transmission is driven by the rotor of the wind turbine, the output shaft is connected to the grid via the main generator (asynchronous generator), and the third shaft is driven by a control motor with variable speed. The dynamic models of the subsystems of this wind turbine, e.g. the rotor aerodynamics, the drive train dynamics, and the power generation unit dynamics, were given and linearized at an operating point. These submodels were integrated in a multi-disciplinary dynamic model, which is suitable for control syntheses to optimize the utilization of wind energy and to reduce the excessive dynamic loads. The important dynamic behaviours were investigated and the suggestions to design a suitable control system were given.
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