The modeling and simulation for current regulation of PMSM drive system using verilog HDL and variable structure control

In this study, we design the permanent magnet synchronous motor (PMSM) drive system using field programmable gate array (FPGA), and adopt variable structure control (VSC) to the current regulation. The system is first modeled with Matlab/Simulink, and the controllers in the system, including the speed PI control and current variable structure control, are hardware implemented by Verilog HDL code. Finally, the resulting hardware system is co-simulated with the software motor model to evaluate the accuracy and performance. The resulting Verilog HDL codes can be as an IP format to hardware realize the vector control for PMSM, and with the properties of robustness to the parameter variations and fast responses on the current loop control.