Research on Simulation Method of Multiphase Generator Based on Low-Phase Model

With the improvement of power supply requirements, multiphase generators with low voltage, high power and high reliability have attracted more attention. However, the complexity of mathematical model of multiphase generator increases greatly with the increase of phase number, which brings challenges to simulation modeling. In this paper, a modeling approach of multi-phase generator using the existing low-phase generator model is proposed. The method is verified by modelling a six-phase generator from three-phase model as an example. Firstly, the mathematical model of the standard double Y-shift 30° six-phase generator is expounded. And then the three-phase generator model is introduced. Finally, a six-phase generator model based on two three-phase generators is built in Matlab/Simulink. Compared with the standard dual Y shift 30°six-phase generator model, the external current characteristics of the load step test from the proposed model is consistent, which verifies the modeling idea proposed in this paper.