A Novel Fuzzy Logic Controller Based Torque and Flux Controls of IPM Synchronous Motor

This paper presents a novel fuzzy logic controller (FLC) based wide speed range operation of interior permanent- magnet synchronous motor (IPMSM) drives. The proposed FLC is designed in such a way that it can simultaneously control both torque and flux of the motor while maintaining current and voltage constraints. Thus, a stand alone FLC is utilized whose outputs are d and q- axes currents. The proposed FLC is designed based on conventional maximum torque per ampere operation below the rated speed and the field weakening operation above the rated speed. The complete IPMSM drive is experimentally implemented utilizing dSPACE DSP board DS1104 for a prototype 5 hp motor. The performance of the proposed drive is tested both in simulation and experiment at different operating conditions. The robustness of the controller and its prospective real-time industrial drive application is evidenced by the results.