New modeling approach of doubly salient electro-magnetic wind turbine generator

Applying novel doubly salient electro-magnetic generator to wind power generation system is proposed. Modeling method based on parameter identification of the doubly salient generator is presented. The authors also proposed that if the hardware of the digital automatic voltage regulator (AVR) used skillfully, the excitation of generator can be easily controlled to step around the operating point. At the same time, the real-time value of output voltage is stored in the memory of the digital AVR. The mathematical model in complex domain can be acquired by off-line identification in MATLAB. According to the above logic, the complex models of generator under different typical load and rated rotate speed can be obtained successfully. Both system simulation and experiment results confirm the validity of the generator model. It has an important reference not only to the simulation analysis of the wind power system, but also to the parametric programming of digital AVR.