Improved Current and MTPA Control Characteristics Using FEM-Based Inductance Maps for Vector-Controlled IPM Motor

Some major problems in the motor drive are overshoot or undershoot of transient response characteristics and a parameter mismatch due to magnetic saturation. This study proposed 3D inductance map combined with maximum-torque-per-ampere (MTPA) based on finite-element (FE) model considering cross-coupling saturation impact overcome this problem. The FE has high accuracy no-load back electromotive force (e.m.f.) around 98.3% compared measurement results. Then, nine scenarios vector control combinations maps current supply variations β 0°, 45°, MTPA were investigated. As result, improvement for without Ld Lq is 63%, 10%, 15%, respectively. Moreover, steady-state response, average torque between Idref 0 A 9.21%, 8.97%, 8.98% no-map, ave-map, 3D-inductance-map conditions, trajectory characteristic was also updated illustrate actual condition conventional control. In detail, method reduced loop state improved response. Finally, verified by an simulation experimental