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RISS 인기검색어
- 검색키워드
- 저자 : DO HOANG THINH (검색결과 2 건)
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DO HOANG THINH 울산대학교 대학원 2013 국내석사
In recent years, the demand of fuel is incessantly increasing while the natural resources have left accompanied by continuously increasing price. Besides, the air pollution caused by vehicles has been being a serious problem. These matters force researchers to propose new methods to economize fuel consumption as well as to find out clear energy resources, which can replace fossil energy. To solve above problems, this thesis develops a new type of hydrostatic transmission, which employs the advantages of pressure coupling principle. This approach showed good performance in saving energy in vehicle application. I addition, the proposed hydrostatic transmission was applied to wind energy conversion system. This application inherits advantages of hydrostatic transmission, such as high efficiency, low noise, less maintenance requirement… More over, the strongest point is its ability in expansion of the operating power range for a wind energy conversion system. That means the redundant power during over-speed can be absorbed and stored for using later, especially in low speed condition of turbine Therefore, the generator can be drive in rated speed and can generate more electric energy than conventional wind power energy conversion system can do. In this thesis, some control algorithm are designed and applied for speed control of vehicle as well as generator. Simulations and experiments were carried out to verify performance of the proposed systems and the effectiveness of the controllers. The simulation results of vehicle application indicated that the pressure coupling configuration gave better performance in comparison to flow coupling configuration.
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