Per-unit HIL real-time simulation modeling & test of permanent magnet synchronous motor based on FPGA

Traditional modeling of permanent magnet synchronous motor (PMSM) based on FPGA does not take into account the generality of the model, thus it can not be applied to different types of motors. In this paper, a method of transforming motor models into per-unit values system is introduced, and the accuracy and time delay characteristics of the model are considered in the process of FPGA programming. The two types of potential energy load and resistance load are distinguished in the motor motion equation, which enables the model to run in four quadrants. Finally, the PMSM control system is established by connecting a dSPACE controller to the FPGA-based per-unit value model. Different types of motor parameters were tested; the experiment results were compared with the Simulink simulation results, which verify the versatility and reliability of per-unit value model.