Parameter identification for MTPA control based on a nonlinear d-q dynamic IPMSM model

Purpose Small highly saturated interior permanent magnet- synchronous machines (IPMSMs) show a very nonlinear behaviour. Such are mostly controlled with closed-loop cascade control, which is based on d-q two-axis dynamic model constant concentrated parameters to calculate the control parameters. This paper aims present identification of complete current- and rotor position-dependent model, derived by using finite element method (FEM) simulation. The machine’s determined for an operation maximum torque per ampere (MTPA) curve. obtained MTPA performance was evaluated FEM-based model. Design/methodology/approach A FEM used determine properties IPMSM. Furthermore, fitting procedure curve proposed adequate Findings current-dependent machine models relevant behaviour most response achieved while fitted method. Originality/value effect motor’s steady-state differently complex evaluated. workflow obtain set decoupled in region developed their analysed.