A PMSM current controller system on FPGA platform
Permanent magnet synchronous motor (PMSM) has gained more interest recently in industrial applications. Digital hardware solutions such as field programmable gate arrays (FPGAs) are the most preferred methods for controlling PMSM drivers. This paper presents an implementation of a current control system for PMSM based on FPGA. Encoder-based speed and position detection method has been used in proposed hardware. The whole system has been modeled and simulated in system level using MATLAB/SIMULINK. Hardware architecture for all computational blocks is implemented using Verilog HDL. The hardware architecture has been successfully synthesized and implemented on Altera Cyclone II FPGA. Proposed system architecture and computational blocks are described and system level and RTL simulation results are presented. Simulation results show that the total computation cycle time of implemented system on Altera Cyclone II FPGA is 456ns.
Keywords: PMSM, FPGA, Incremental encoder, CORDIC, Hysteresis Current Control.