Current Vector Control Techniques of Five-Phase Synchronous Reluctance Motor Drive Systems

摘要

Implementation of five-phase machines in electric drive systems is increasing rapidly in many applications. This is owed to the advantages offered by the multi-phase machines over the three-phase ones. However, there are inevitable challenges in the system control in order to obtain the optimum high performance. In the current study, the behavior of five-phase Synchronous Reluctance Motor (SynRM) under two current vector control strategies has been studied and compared. The first control method is based on maintaining the d-axis current at a constant predetermined value while the second adopts maximum torque per ampere (MTPA) control strategy. The drive system is modelled and simulated under different operating conditions including changing load and reference speed. The obtained results showed a general superiority of the MTPA technique in most conditions, while the constant d-axis current control strategy shows slightly better behavior in some cases.