Study of the optimal power output in variable speed wind power generation system based on switched reluctance motor

With the deteriorating shortage of fossil energy, improvement of mankind´s environmental consciousness and increase in greenhouse gas emissions, more attention is given to renewable energy. As wind is renewable and can produce electricity with no pollutant gas emission, the study of the wind power generation (WPG) not only has the important theoretical significance but also applied value. The current situation in WPG and motors which are used commonly in WPG are analyzed in this paper at first. Then we get a conclusion that switched reluctance motor (SRM) is more suitable for WPG compared with other motors for some of its advantages, such as simple structure, low-cost, high reliability, wide speed range. Second, taking the three-phase 12/8 structure SRM as an example, we study the theory about SRM, the matching mathematical models and the optimal power output is deduced. At last, we take advantage of the PSCAD (power systems computer aided design) software to simulate the WPG system and validate the feasibility and superiority of the method.