Parameter Identification of a Permanent Magnet Synchronous Machine based on Current Decay Test and Particle Swarm Optimization

The Permanent Magnet Synchronous Machine (PMSM) is widely used in industrial applications. In order to obtain a high performance operation, an accurate knowledge of the machine parameters, such as direct (d) and quadrature (q) stator inductances is necessary. This paper presents two different methods to identify the stator inductances taking into account the magnetic saturation. First, Current Decay Test (CDT) is presented, then, Particle Swarm Optimization (PSO) algorithm. Both methods are used to identify the stator inductances. An own power electronic drive and a low cost digital signal processor (DSP) have been used on the experimental setup. Experimental results are presented to validate the theoretical work.