| Summary: | 碩士 === 國立臺北科技大學 === 電機工程系研究所 === 98 === As locating near Black Tide, Taiwan is very suitable to develop ocean current power generations. However, the power generated by Black Tide may be affected the current speed variations. To investigate the above expectations, this thesis uses self-designed sink, momentum wheels and turbine blades to build the first experimental platform in Taiwan for simulating an ocean current power generation environment. On the other hand, this thesis also designed a Doubly-Fed Induction Generator controller for speed and real power controls. In order to control the DFIG effectively, the model is transformed from a-b-c frame to d-q two-axis frame. Because the DFIG model is nonlinear, this thesis adoptes Backstepping nonlinear control theory to achieve the real power control. The speed controller is also designed based on Backstepping controller to immune the effects caused by ocean current fluctuations. The experimental platform and the developed control theories are finally verified by practical measurements and MATLAB/SIMULINK simulator. The results shows the proposed experimental platform and controllers are effective and can satisfy the design objects.
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