Railway WPT System Simulation based on an Enhanced Discrete State Event Driven Simulation Framework

The railway wireless power transfer (WPT) system contains magnetic cores and moving coils, which brings problems of saturation and parameter change for the system’s simulation. To simulate linear power electronics circuits with fast speed, the discrete state event driven (DSED) framework has been proposed. However, this framework cannot solve WPT systems which are nonlinear and time-variant. To extend the capability of DSED to solving WPT systems, this paper proposes an enhanced DSED framework with the decomposition of circuits’ equations and suitable events processor. With the proposed framework, we successfully simulate a railway WPT system in both stable and coil switching process. Compared with Simulink, the enhanced DSED framework takes less execution time with the same accuracy.