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Traditional Savonius wind turbine has advantages such as simple structure, fast start-up, etc., however, it also has significant disadvantages of low wind energy utilization efficiency. A novel wind turbine is proposed by improving structure of Savonius wind turbine in order to increase the low wind energy utilization efficiency. To compare performance of the novel wind turbine and the Savonius wind...
Analytical method based on magnetic equivalent circuits (MEC) is widely used for the preliminary machine design due to short calculation time and low computational cost, but the calculate result is normally considered to be not as accurate as finite element method (FEM). To address the MEC less accurate and FEM time-consuming challenge, a novel design and analysis procedure of permanent magnet synchronous...
In order to further improve the performance of sliding mode variable structure control for sensorless control of permanent magnet synchronous motor (PMSM). Analyze the problems of singularity, chattering, and slow convergence of the terminal sliding mode control. A new reaching law based on the nonsingular terminal sliding mode control is proposed, the advantages of the reaching law and nonsingular...
Wind energy has attracted persistent attention as a renewable energy, so it is very significant to research the permanent magnet generator which is an essential part of wind energy conversion system. This paper proposes a novel outer rotor axial primary magnetic circuit permanent magnet generator. For the sake of small size and light weight with extra low speed for direct coupling, the outer rotor...
Wind energy is a clean and renewable energy resource and has been paid more and more attention by scholars around the world. As a drag-drive n type Vertical Axis Wind Turbine (VAWT), traditional Savonius wind rotor has disadvantage of low wind energy utilization but has a lot of the advantages compare d with Horizontal Axis Wind Turbines (HAWTs) and lift-driven VAWTs. A fish-ridged wind rotor is proposed...
Wind energy has attracted persistent attention all over the world as a renewable energy, so it is very important to research the permanent magnet generator which is an important part of wind energy conversion system. A simplified computational method for generator design is proposed in this paper, and an experimental device is made to check out the usability of the proposed method. The dynamic performance...
Three-hastate vertical axis wind wheel, a novel type rotor with high efficiency, can be able to actualize wind energy conversion by the lumen twice driven principle, based on the theoretical analysis of the rotor's geometric structure in this research. The computational fluid dynamic analyses, which detect the aerodynamic characteristic of the rotor further, are also described by using the multiple...
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