Mathematical Model and Control Method of Maximum Torque Per Ampere for PMSM in Stator Flux Linkage Synchronous Frame

Abstract

Most mathematical models in the d-q frame that consider the magnetic saturation and cross-magnetization effects of a permanent-magnet synchronous motor (PMSM) are complex. The stator flux linkage synchronous frame (M-T frame) has several advantages such as the concise flux-weakening control law, simplicity of calculation, and so on. This paper proposes a mathematical model and control method for the MTPA control law of the direct-torque-controlled PMSM in the M-T frame. The validity of the proposed model and method is confirmed by experimental results.