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Purpose As the size of wind turbines are continuously increasing, fatigue loads must be reduced to obtain a more reliable condition for main components. Independent pitch control (IPC) strategy, based on the collective pitch control (CPC) strategy, provides an effective solution to load reduction on WT’s components caused by asymmetry loads. Meanwhile, IPC can also improve the performance of MW-scale...
Toroidal motor is a new-style electric machine. In this paper, the basic principle of the motor is introduced. The forming and controlling of the rotational magnetic field are explained. The worm coil distributions for the motor are investigated. Based on the coordinate transforming principle, equations of the stator and the center curve for the worm groove are deduced and the 3D worm and stator models...
In this paper, a kind of active generalized composite drive without contact: electromechanical integrated toroidal drive is presented. In the drive, the toroidal drive, power and control are integrated. The basic structure of the drive is introduced. By electromagnetic theory and mechanical principle, the operating principle of the drive is analysed. The forces of the drive are analysed and its output...
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