The AC tracking excitation control based on the EKF flux observing technology

For the shortcoming of the sampling and control delay in the excitation control method, a new method which is based on the EKF flux observing technoloy is proposed in this article. In this method, the status variables can be estimated on the real time basis. The dynamatic reference voltage which will change accroding to the estimated status variables is designed. The output voltage of the movable power vehicle will real-time compare with the reference voltage. With this method, the excitation speed can be improved. Through the theoretical analysis and the simulation, which is based on the specific parameters of the movable power vehicle, the feasibility and superiority of the proposed excitation method is proved in this article.