Research on Real-Time Simulation Method of Power Electronics Based on LB-LMC Algorithm

In the design of power systems, real-time simulation is a powerful tool for evaluating and verifying the design before committing resources to develop such systems. For power systems containing a large number of power electronic devices, it is difficult for traditional electromagnetic transient real-time simulators to realize small-step simulation. Field programmable gate array (FPGA) is able to realize small-step simulation due to the advantages of its unique hardware architecture, which is adopted in this paper for simulation. For the switching device modeling method, different from the traditional two-valued resistance, small inductance/small capacitance equivalent switching model, the paper adopts the delay-based linear multi-step composite (LB-LMC), the LB-LMC algorithm adopts a new switching modeling method, which is the method of parallelizing all the nonlinear components, and still maintains the resistive accompanied architecture on the whole, so that in one time step No iterative computation is required, which reduces the computational complexity to some extent. In order to address the difficulty of programming FPGAs, the paper adopts the HLS advanced synthesis method, which greatly reduces the development time.