Multi-Loop Mathematical Model of Nuclear Power TKJ-Type Multiphase Brushless Exciter

The TKJ-type multiphase brushless exciter (TMBE) is a relatively advanced exciter at present, mainly used in large-capacity nuclear power units. For this type of exciter, this paper proposes a multi-loop modeling method with winding function approach (WFA) as the core. Firstly, this paper analyzes the structural principle and operational characteristics of TMBE. Secondly, the multi-loop mathematical model of 11-phase TMBE is established, and the derivation of inductance parameters in the model is made. Finally, this paper takes 11-phase TMBE as the calculation example and establishes the corresponding finite element simulation model. The simulation results are in good agreement with theoretical analysis, indicating the accuracy of the mathematical model established in this paper.