Modeling of Switched Reluctance Generator Based on Modelica

In this paper, a novel model of a switched reluctance generator is established. And based on the idea of object-oriented modeling, the stator, rotor, power converter, current chopper, and PID controller of the switched reluctance generator are modeled. And Modelica is used as the modeling language. The most complex part of building a switched reluctance generator model is its nonlinear characteristics. There are two nonlinear relations. The first one is that the machine flux linkage is dependent on the stator current and rotor position. Another one is that the electromagnetic torque is also dependent on the stator current and rotor position. The nonlinear characteristics are generally described by the finite element method and the function approximation method. This paper uses both methods to establish a switched reluctance generator model, and then compares the simulation results of the models established by the two methods. The model of the switched reluctance generator established in this paper is a three-phase selfexcited switched reluctance generator with three pairs of stators and two pairs of rotors as an example.