dSPACE DSP based implementation of simplified fuzzy logic speed controller for vector controlled PMSM drives

This paper deals with the dSPACE DS1103 based implementation of a simplified fuzzy logic speed controller (Simplified FLSC) for vector controlled permanent magnet synchronous motor (PMSM) drives. The simplification of FLSC obtains minimization and adjustment of the membership function used by each fuzzy variable for the drive system. The mathematical model of PMSM drives has been simulated in the MATLAB environment using Simulink and Fuzzy Logic Toolbox to analyze the performance of the drive system. The simulated results are then validated with the experimental investigation. For experimentation, the FLSC, co-ordinate transformation and hysteresis current controller (HCC) have been implemented in MATLAB environment with Simulink, Fuzzy Logic Toolbox and Real-time interface. Meanwhile, the hardware implementation consisting of dSPACE digital signal processor, voltage source inverter, resolver-to-linear DC converter, current sensors and PMSM equipped with speed resolver. The PMSM drive system has been tested under various operating conditions and load disturbances.