| Now, energy sources consume increasing daily and environment empoison being serious gradually, in the exploitation for the renewable energy source, wind power is paid great attention by more and more countries because of its stand out excellence, The wind power generation technology also become research hotspot of many country's scholar. And the variable-speed constant-frequency(vscf) generation technology is paid attention more and more for its high efficiency and practicability.The Brushless Doubly-Fed Machine (BDFM), with simple structure and favorable reliability, has gained renewed attention in variable-speed constant-frequency generator applications in recent years for it features adjustable power factor and high efficiency.In this paper, based on the traditional wind power generation, the variable-speed constant-frequency generation technology is mainly research, a comprehensive research on the BDFM with cage rotor used in the variable-speed constant-frequency wind power generation. The following items are include:1. Summarize the research status of the wind power generation, introduce the history and developing future of and BDFM.2. The prototype of BDFM and its development are investigated, study in detail the principal of BDFM design feathers, the feasibility and superiority for BDFM used in the variable-speed constant-frequency generator applications is explained3. The variable-speed constant-frequency generation BDFM wind power generation power control mathematic model is firstly derived, and its power control strategy is found. Computer simulation is given to verify this power control strategy.4. this paper has analyzed the stator flux oriented vector control strategy and mathematic model of the BDFM as vscf wind power generator .5. Having analyzed the BDFM control strategies, the intelligent control Strategy on the BDFM control is studied. Computer simulation is given to verify this fuzzy power factor control strategy...
|
PDF Full Text Request