小型風(fēng)力發(fā)電機(jī)用永磁懸浮軸承的設(shè)計(jì)與應(yīng)用
[Abstract]:Developing wind power industry in a large scale is one of the strategic options to solve the shortage of energy and electricity in China. Small-scale wind turbine equipment has advantages in wind power generation due to its low operating cost, no pollution, low energy consumption, flexible and diverse structure selection, simple installation, operation and maintenance. However, many key technologies for wind turbines, especially small ones, are still immature. As one of the key components of generators, bearings also face multiple challenges. The starting resistance of the existing small wind turbine is large, which results in high wind speed and low utilization of wind energy. Therefore, it is the key to expand the area of effective utilization of wind energy in China to develop the technology of small scale wind power generation with low wind speed. A 1 kW vertical axis wind turbine is studied in this paper. Firstly, the permanent magnetic bearing is designed to replace the traditional bearing used in generator rotor. Secondly, the finite element simulation analysis of the bearing capacity of permanent magnetic bearing is carried out by ANSYS software. The simulation results show that the bearing capacity meets the bearing requirements. Then, the finished parts are assembled and the ultimate product is tested. The measured results are in agreement with the simulation analysis and the design scheme is reasonable. Finally, permanent magnetic bearings are installed on small wind turbines for comparative testing and verification. By comparison, the wind speed of small wind turbine with bearing designed in this paper is obviously lower than that of small wind turbine with conventional bearing. Therefore, the small wind turbine can be used in the regions where the wind energy resources are not abundant, and the utilization rate of wind energy can be improved, which is of great significance to the national energy strategy.
【學(xué)位授予單位】:河南科技大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TM315
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