| Title |
Magnetic Saliency Estimation of SMPM Motor for Precise Torque Control using State-Filter in Flux-Weakening Operation |
| Authors |
Ju-Young Jang ; Chang-Hee Choi ; Jul-Ki Seok |
| Keywords |
Magnetic Saliency Effect ; SMPM(Surface-Mounted Permanent-Magnet) Motor ; State-Filter ; Flux Weakening ; The Torque Control At High Speeds |
| Abstract |
The magnetic saliency effect in surface-mounted permanent-magnet (SMPM) motors on the torque control at high speeds is first presented and analyzed in this paper. The d- and q- axes impedance are measured by proposed State-Filter. Measurement of the d- and q- axes impedance difference is performed to prove the existence of the magnetic saliency. Then, the saliency effects on the torque control performance in the flux weakening region are discussed. Based on the developed motor modeling with the reluctance torque, the proposed control adjusts the d- and q-axis current toward the operating point to track the commanded torque. The feasibility of the presented idea is verified by experimental results on a commercial 600[W] SMPM motor. |